From Wikipedia, the free encyclopedia
.^ In this article, we will examine solar cells to learn how they convert the sun's energy directly into electricity.- HowStuffWorks "How Solar Cells Work" 28 January 2010 0:52 UTC www.howstuffworks.com [Source type: FILTERED WITH BAYES]
^ A photoelectric cell converts light energy into electrical energy.- Robotics - Sensory Systems 25 September 2009 7:27 UTC science.jrank.org [Source type: FILTERED WITH BAYES]
^ Solar cells, otherwise known as solar photovoltaic cells are devices that convert solar energy into electricity.
.^ Photovoltaic cells, sometimes called solar cells, can convert light, such as sunlight, into electrical energy.
^ Why should I use solar cells?- Solar Cells convert sunlight into electricity. Solar cells, a future of free energy | dasolar.com 28 January 2010 0:52 UTC www.dasolar.com [Source type: FILTERED WITH BAYES]
^ Element used in solar cells?- WikiAnswers - What element do solar cells rely on 28 January 2010 0:52 UTC wiki.answers.com [Source type: General]
.^ Photovoltaic Cell, solar cell manufacturers .- Photovoltaic Cell, solar cell manufacturers 28 January 2010 0:52 UTC www.hebesolar.com [Source type: Academic]
^ Why should I use solar cells?- Solar Cells convert sunlight into electricity. Solar cells, a future of free energy | dasolar.com 28 January 2010 0:52 UTC www.dasolar.com [Source type: FILTERED WITH BAYES]
^ Element used in solar cells?- WikiAnswers - What element do solar cells rely on 28 January 2010 0:52 UTC wiki.answers.com [Source type: General]
.^ Photovoltaic Cell, solar cell manufacturers .- Photovoltaic Cell, solar cell manufacturers 28 January 2010 0:52 UTC www.hebesolar.com [Source type: Academic]
^ Why should I use solar cells?- Solar Cells convert sunlight into electricity. Solar cells, a future of free energy | dasolar.com 28 January 2010 0:52 UTC www.dasolar.com [Source type: FILTERED WITH BAYES]
^ Western Electric licences commercial solar cell technologies.- Solar Cell History & Timeline 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Photovoltaic, photovoltaic cells, solar power, solar energy .- Photovoltaic, photovoltaic cells, solar power, solar energy 18 September 2009 11:52 UTC www.econation.co.nz [Source type: General]
^ Solar power · Renewable energy Technology .- This week we want to know all about ... Solar-powered clothing | Environment | The Observer 28 January 2010 0:52 UTC www.guardian.co.uk [Source type: News]
^ Solar energy or solar power is then the energy that is generated in this means.
History of solar cells
.^ They are sometimes called photovoltaics which means "light-electricity".- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Photovoltaic cells do just what the name implies: photo meaning light and voltaic meaning electricity.
^ Main article: Timeline of solar cells The term "photovoltaic" comes from the Greek φώς: phos meaning "light", and "voltaic", meaning electrical, from the name of the Italian physicist Volta , after whom the measurement unit volt is named.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
The term "photo-voltaic" has been in use in English since 1849.
[1]
.^ The photovoltaic effect was first recognized in 1839 by French physicist A. E. Becquerel.- Solar Cell - KTerra 28 January 2010 0:52 UTC kterra.com [Source type: Academic]
^ The photovoltaic effect was first recognised in 1839 by French physicist Alexandre-Edmond Becquerel .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- Solar Cell History & Timeline 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This is known as the photovoltaic effect, and was first noticed in 1839.- Photovoltaics (solar cells) - briefing document 28 January 2010 0:52 UTC www.abelard.org [Source type: FILTERED WITH BAYES]
.^ The solar cells are built up in several layers.- solar cell - Sparking Tech 28 January 2010 0:52 UTC sparkingtech.com [Source type: General]
^ Charles Fritts develops a solar cell using selenium on a thin layer of gold to form a device giving less than 1% efficiency.- Solar Cell History & Timeline 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The heart of the cell is two layers of semiconductor : a thin (e.g., 2 micron) n-type layer over a p-type layer.- ISRU solar cells - NewMarsWiki 28 January 2010 0:52 UTC www.newmars.com [Source type: Academic]
.^ The device was only around 1% efficient.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- Solar Cell History & Timeline 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ However, the CURRENT reality is that the panels still commonly available are generally only around 7% efficient.- http://mb-soft.com/solar/photovol.html 18 September 2009 11:52 UTC mb-soft.com [Source type: Original source]
^ This is noting that (commonly available) existing photovoltaic cell technology only is around 7% efficient regarding electricity made as compared to the solar energy that hits the cell.- http://mb-soft.com/solar/photovol.html 18 September 2009 11:52 UTC mb-soft.com [Source type: Original source]
.^ When sunlight strikes a solar cell, an electron is freed by the photoelectric effect.- solar cell (electronics) -- Britannica Online Encyclopedia 28 January 2010 0:52 UTC www.britannica.com [Source type: Reference]
^ A solar cell based on plant biology !- New Solar Electric Cells - 80% efficient 28 January 2010 0:52 UTC www.hbci.com [Source type: FILTERED WITH BAYES]
^ Solar cells - built for modularity .- Solar Cells convert sunlight into electricity. Solar cells, a future of free energy | dasolar.com 28 January 2010 0:52 UTC www.dasolar.com [Source type: FILTERED WITH BAYES]
.^ When sunlight strikes a solar cell, an electron is freed by the photoelectric effect.- solar cell (electronics) -- Britannica Online Encyclopedia 28 January 2010 0:52 UTC www.britannica.com [Source type: Reference]
^ It was not until 1941 when Russel Ohl produced and patented the first ‘modern’ silicon-based solar cell.
^ Build a solar cell Solar cells work Homemade solar cell...- Solar_cell encyclopedia topics | Reference.com 28 January 2010 0:52 UTC www.reference.com [Source type: General]
High-efficiency cells
.^ Tags: solar cells , solar power Posted in solar power .- solar cells « Tek-Supply Blog 28 January 2010 0:52 UTC tek-supply.com [Source type: Academic]
^ Salyut 1 is powered by solar cells.
^ Nanotechnology , Photovoltaics , Cell , Semiconductor , solar cell , researcher , power generation .- solar cell stories - ZDNet Asia 28 January 2010 0:52 UTC www.zdnetasia.com [Source type: News]
.^ Results show that they surpass conventional technologies with efficiencies higher than 22%, so they can be considered as an alternative technology for power sources onboard of terrestrial mobile robots.- Robotics Institute: Analysis of High-Efficiency Solar Cells in Mobile Robot Applications 11 September 2009 6:16 UTC www-old.ri.cmu.edu [Source type: Academic]
^ Solar cells currently cost around $3.50 per watt for crystalline cells, and $2 per watt for thin-film wafers, which are less efficient but can be integrated into building materials.- Eco-Economy Indicators - Solar Power- Solar Cell Sales Booming| EPI 28 January 2010 0:52 UTC www.earth-policy.org [Source type: FILTERED WITH BAYES]
^ In addition, the new array is much lighter than previous space solar arrays, providing five times more power per pound than the International Space Station arrays.- Entech-Led Team To Develop Advanced Solar Arrays For Spacecraft 11 September 2009 6:16 UTC www.spacedaily.com [Source type: News]
.^ There are two main criteria - efficiency and cost.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Our developments allow an increase in active cell area, increasing efficiency.- 3Gsolar - Dye Solar Cell (DSC) TechnologyDeveloping Low-Cost Solar Modules 28 January 2010 0:52 UTC 3gsolar.com [Source type: FILTERED WITH BAYES]
^ Photovoltaic Cell - Solar-electric Homes .- Photovoltaic Cell - How They Work, Applications, Solar-electric Homes, Materials, Amorphous Silicon, Crystalline Silicon 20 November 2009 21:021 UTC science.jrank.org [Source type: Reference]
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Solar cell - Wikipedia, the free encyclopedia .
^ Solar cells, a future of free energy .- Solar Cells convert sunlight into electricity. Solar cells, a future of free energy | dasolar.com 28 January 2010 0:52 UTC www.dasolar.com [Source type: FILTERED WITH BAYES]
.^ Efficiency hardly matters, compared to cost-per-watt.- Solar cells with 63% efficiency by 2020 – Computer Chips & Hardware Technology | Geek.com 28 January 2010 0:52 UTC www.geek.com [Source type: General]
^ The cost of energy produced by solar cell systems continues to drop.- Solar Cells convert sunlight into electricity. Solar cells, a future of free energy | dasolar.com 28 January 2010 0:52 UTC www.dasolar.com [Source type: FILTERED WITH BAYES]
^ The current thus produced is the output of the cell.- Scitoys Message Board: Collecting radio energy 11 September 2009 6:16 UTC scitoys.com [Source type: General]
.^ We need to make solar energy more cost effective and efficient.” .
^ Photovoltaic (solar cell) Systems News .- Photovoltaic (solar cell) Systems - Solar Energy - Renewable Energy World 28 January 2010 0:52 UTC www.renewableenergyworld.com [Source type: News]
^ Cost and efficiency were the great barriers to solar energy.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
.^ This term is calculated by dividing P max by the input light irradiance ( E , in W/m², measured under standard test conditions) multiplied by the surface area of the solar cell (A C , in m 2 ).- Choices for measuring solar-cell output power - Electronic Products 28 January 2010 0:52 UTC www2.electronicproducts.com [Source type: Academic]
^ In simple terms, a semiconductor is a material that acts as an insulator, but is also capable of conducting electricity under certain conditions.- Photovoltaic Cells 18 September 2009 11:52 UTC www.squidoo.com [Source type: General]
^ This project is focused on producing high-efficiency solar cells that are resistant to extreme conditions such as those found near the sun.- Kopin wins NASA award for nanostructured InGaP solar cells (Compound Semiconductor Blog) - compoundsemiconductor.net 11 September 2009 6:16 UTC compoundsemiconductor.net [Source type: News]
.^ This unit is rated for 8V open voltage and 310mA short circuit.- SparkFun Electronics - Solar Cell Large 28 January 2010 0:52 UTC www.sparkfun.com [Source type: General]
- Make: Online : Solar cells 28 January 2010 0:52 UTC blog.makezine.com [Source type: FILTERED WITH BAYES]
^ Open circuit voltage is 5.2 volts.
^ In the picture, I-U characteristics at short circuit and open circuit conditions can be seen.
[3]
The chart at the right illustrates the best laboratory efficiencies obtained for various materials and technologies, generally this is done on very small, i.e. one square cm, cells. Commercial efficiencies are significantly lower.
Record efficiencies
Multiple-junction solar cells
.^ All solar cells are junction diodes.- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
^ Solar cell breaks efficiency record .- Solar cell breaks efficiency record - CNET News 28 January 2010 0:52 UTC news.cnet.com [Source type: General]
- Solar cell breaks efficiency record | Tech News on ZDNet 28 January 2010 0:52 UTC news.zdnet.com [Source type: General]
^ Principle of p-n junction solar cell .- Solar cell research at Durham 28 January 2010 0:52 UTC www.dur.ac.uk [Source type: Academic]
.^ The Fraunhofer Institute for Solar Energy Systems in Germany verified the efficiency claim.- Greentech Media: Suniva Expands Solar Cell Production, Boosts Efficiency 28 January 2010 0:52 UTC www.greentechmedia.com [Source type: News]
^ New solar power world record .- Titania nanotubes make better solar cells 19 September 2009 6:58 UTC www.physorg.com [Source type: FILTERED WITH BAYES]
^ The University of Delaware's Institute of Energy Conversion has developed new technology for the manufacture of flexible solar cells, which could reduce the costs associated with the use of ...- New Flexible Plastic Solar Panels Are Inexpensive And Easy To Make 28 January 2010 0:52 UTC www.sciencedaily.com [Source type: News]
[4][5][6] .^ Multijunction cells available commercially from Spectrolab have rated efficiency of 29%.- Solar Power Cells: Efficiency and Types 28 January 2010 0:52 UTC solar.smps.us [Source type: FILTERED WITH BAYES]
^ Spectrolab designs highly efficient solar cell .- Solar Cell -- Engadget 28 January 2010 0:52 UTC www.engadget.com [Source type: General]
^ When converted by a solar cell of 10 percent efficiency (presently reached or exceeded by most commercially available solar panels), this means that 100 W/m 2 in electrical energy can be harvested.- Solar Cells – FREE Solar Cells information | Encyclopedia.com: Find Solar Cells research 19 September 2009 6:58 UTC www.encyclopedia.com [Source type: Academic]
.^ Procuring parts off of eBay normally causes others hardship when they try to duplicate the project, however in this case there are so many types of cells people can use to produce their own unique solar panel.- 60 Watt solar panel built from cells - Hack a Day 28 January 2010 0:52 UTC hackaday.com [Source type: General]
^ The cells have only been tested under lab conditions, and the non-silicon cells are still too expensive for most potential uses.- Solar Cell Celebration or Confusion? | Science Blog 28 January 2010 0:52 UTC www.scienceblog.com [Source type: News]
^ This term is calculated by dividing P max by the input light irradiance ( E , in W/m², measured under standard test conditions) multiplied by the surface area of the solar cell (A C , in m 2 ).- Choices for measuring solar-cell output power - Electronic Products 28 January 2010 0:52 UTC www2.electronicproducts.com [Source type: Academic]
[7] .^ Roads all over the world cover huge amounts of area, but they only serve one purpose- to help us get to our destination.
^ We tested one of our devices and found that it was stable (to 92 percent of initial performance) for three months.- Fact Sheet: MIT's solar concentrators 28 January 2010 0:52 UTC web.mit.edu [Source type: Academic]
^ Their world record for “single layer” organic solar cell efficiency is now certified on the books of the National Renewable Energy Laboratory (NREL) in Golden, Colo.- Startup: Plextronics, Organic Solar Cells 28 January 2010 0:52 UTC earth2tech.com [Source type: General]
.^ This first conversion of sunlight to electricity was one percent efficient.- How solar cell is made - material, manufacture, making, used, parts, structure, procedure, steps, industry, Raw Materials, The Manufacturing Process of solar cell 28 January 2010 0:52 UTC www.madehow.com [Source type: FILTERED WITH BAYES]
^ As the sun changes position in the sky, the proportions of "white" light to that of infrared and ultraviolet change dramatically due primarily to atmospheric absorption of certain wavelengths.- Re: can a photoelectric cell be made to absorb any frequency of light? 25 September 2009 7:27 UTC www.madsci.org [Source type: FILTERED WITH BAYES]
^ Conversion efficiency refers to the percentage of sunlight converted into electricity, a critical metric in reducing solar energy costs.- Suniva Prints 20% Efficient Solar Cell 28 January 2010 0:52 UTC earth2tech.com [Source type: General]
Thin-film solar cells
.^ Rapid development of film solar cells.- http://www.infoplease.com/ce6/sci/A0838866.html 25 September 2009 7:27 UTC www.infoplease.com [Source type: Academic]
^ Thin film solar cells are typically less efficient than crystalline silicon solar cells.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
^ Thin-film solar cells .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ Rapid development of film solar cells.- http://www.infoplease.com/ce6/sci/A0838866.html 25 September 2009 7:27 UTC www.infoplease.com [Source type: Academic]
^ There are CdS solar cells, gallium arsenide solar cells, solar cells are several copper indium selenium.- The classification of solar cell 28 January 2010 0:52 UTC www.sunnybp.com [Source type: Academic]
^ Such alternative materials as copper indium selenide offer the promise that a so-called thin-film heterojunction solar cell can be developed.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
.^ The record for efficiency was done by the U.S. National Renewable Energy Research Laboratory (NREL) earlier this year, which reached 19.9 percent efficiency through a co-evaporation process.- IBM muscles into CIGS solar-cell market | Green Tech - CNET News 28 January 2010 0:52 UTC news.cnet.com [Source type: General]
^ Though these solar cells are in the developmental stage, they are expected to hit the markets in about three years.- Creation of a more efficient Organic Solar Cell 28 January 2010 0:52 UTC www.thinksolarenergy.net [Source type: FILTERED WITH BAYES]
^ Finally, processing parameters such as solvent choice, evaporation rates, substrate surfaces, and annealing conditions will be tuned to optimize molecular ordering and film morphology.- Advanced Materials and Devices for Low-Cost and High-Performance Organic Photovoltaic Cells - GCEP 18 September 2009 11:52 UTC gcep.stanford.edu [Source type: Academic]
.^ The last step in the process sputters on indium tin oxide (ITO) to form a transparent conductive coating for attachment of electrical leads.- Thinner is better in solar cells | Machine Design 28 January 2010 0:52 UTC machinedesign.com [Source type: FILTERED WITH BAYES]
^ The record for efficiency was done by the U.S. National Renewable Energy Research Laboratory (NREL) earlier this year, which reached 19.9 percent efficiency through a co-evaporation process.- IBM muscles into CIGS solar-cell market | Green Tech - CNET News 28 January 2010 0:52 UTC news.cnet.com [Source type: General]
^ In a word, It was a depth research report on C-Si (Crystalline Silicon) A-Si(amorphous silicon) CIGS Cu In Ga Se Solar cell and module industry.- China C-Si A-Si CIGS Solar Cell and Module Project Research Report 28 January 2010 0:52 UTC www.bharatbook.com [Source type: Academic]
.^ Fabrication of hydrogenated amorphous silicon thin film solar cells.- Fabrication of hydrogenated amorphous silicon thin film solar cells. 28 January 2010 0:52 UTC www.crystec.com [Source type: FILTERED WITH BAYES]
^ Hydrogenated amorphous silicon thin film solar cells.- Fabrication of hydrogenated amorphous silicon thin film solar cells. 28 January 2010 0:52 UTC www.crystec.com [Source type: FILTERED WITH BAYES]
^ Multi-crystalline silicon solar cell .- The classification of solar cell 28 January 2010 0:52 UTC www.sunnybp.com [Source type: Academic]
[8] .^ Solar Production Turn-key lines for thin-film module production.- Global Solar Technology - Konarka reaches milestone in efficiency for plastic solar cells 28 January 2010 0:52 UTC globalsolartechnology.com [Source type: Academic]
^ This reduces the efficiency of the thin film solar cell.- Fabrication of hydrogenated amorphous silicon thin film solar cells. 28 January 2010 0:52 UTC www.crystec.com [Source type: FILTERED WITH BAYES]
^ Thin film solar cells .- Solar Cell Technologies 28 January 2010 0:52 UTC www.solarbuzz.com [Source type: FILTERED WITH BAYES]
Crystalline Silicon
.^ Monocrystalline silicon solar cells .- The classification of solar cell 28 January 2010 0:52 UTC www.sunnybp.com [Source type: Academic]
^ Highest Achieved Efficiency (Lab cells) .- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Monocrystalline silicon solar cell .- The classification of solar cell 28 January 2010 0:52 UTC www.sunnybp.com [Source type: Academic]
.^ Amorphous silicon is much less expensive to produce, but is less efficient in producing electricity.
^ Silicon is expensive to process and mass produce.- solar cells « Tek-Supply Blog 28 January 2010 0:52 UTC tek-supply.com [Source type: Academic]
- UC Berkeley Press Release 28 January 2010 0:52 UTC www.berkeley.edu [Source type: Academic]
^ The new cells showed efficiencies as high as 10 percent, a record for this type of solar cell (efficiency is the ratio of useful energy delivered by a system to the energy initially supplied).- Solar Cells Set New Performance Mark | LiveScience 19 September 2009 6:58 UTC www.livescience.com [Source type: FILTERED WITH BAYES]
.^ Commercialization of new solar technology to boost solar efficiency.- Extreme Solar Energy Cell Makeover | The X-Journals 28 January 2010 0:52 UTC x-journals.com [Source type: FILTERED WITH BAYES]
^ Highest Achieved Efficiency (Lab cells) .- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ The University of Delaware's Institute of Energy Conversion has developed new technology for the manufacture of flexible solar cells, which could reduce the costs associated with the use of ...- New Flexible Plastic Solar Panels Are Inexpensive And Easy To Make 28 January 2010 0:52 UTC www.sciencedaily.com [Source type: News]
.^ What is the energy payback period for solar cells?- Solar Cells convert sunlight into electricity. Solar cells, a future of free energy | dasolar.com 28 January 2010 0:52 UTC www.dasolar.com [Source type: FILTERED WITH BAYES]
^ By comparison, a typical silicon solar panel has an energy payback time of around three years, and a typical vacuum-deposited thin-film cell has one of 1-2 years.- AllWin21 Corp. 28 January 2010 0:52 UTC www.allwin21.com [Source type: Academic]
^ When converted by a solar cell of 10 percent efficiency (presently reached or exceeded by most commercially available solar panels), this means that 100 W/m 2 in electrical energy can be harvested.- Solar Cells - Chemistry Encyclopedia - structure, metal, equation, The pn Junction, Current-Voltage Characteristics, Solar Cell Materials, Optimization of Photon Absorption, Solar Cell Efficiency 28 January 2010 0:52 UTC www.chemistryexplained.com [Source type: Academic]
- Solar Cells – FREE Solar Cells information | Encyclopedia.com: Find Solar Cells research 19 September 2009 6:58 UTC www.encyclopedia.com [Source type: Academic]
[11][12]
Applications and implementations
Polycrystaline photovoltaic cells laminated to backing material in a module
Polycrystalline photovoltaic cells
.^ Solar cells today do not store electricity.- SolarOne - About Solar Power 28 January 2010 0:52 UTC www.solarone.net [Source type: FILTERED WITH BAYES]
^ Solar cells are often electrically connected and encapsulated as a module .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Solar cells are usually connected in series in modules, so that their voltages add.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ PV modules often have a sheet of glass on the front (sun up) side with a resin barrier behind, allowing light to pass while protecting the semiconductor wafers from the elements ( rain , hail , etc.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ PV modules often have a sheet of glass on the front (sun up) side , allowing light to pass while protecting the semiconductor wafers from the elements (rain, hail, etc.- Solar Cell - KTerra 28 January 2010 0:52 UTC kterra.com [Source type: Academic]
^ PV modules often have a sheet of glass on the front (sun up) side , allowing light to pass while protecting the semiconductor wafers from the elements ( rain , hail , etc.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
).
.^ Ohmic resistance which is connected in series with the solar cell .- Q-Cells SE - Solar Glossary 28 January 2010 0:52 UTC www.q-cells.com [Source type: Academic]
^ Several cells have to be connected in a series of cells to produce a useable voltage.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Voltage is also doubled or tripled by the serial connection.- Fabrication of hydrogenated amorphous silicon thin film solar cells. 28 January 2010 0:52 UTC www.crystec.com [Source type: FILTERED WITH BAYES]
.^ Multiple cells can be wired in parallel for higher current applications.
^ Can be connected in parallel for higher current and in series for higher voltage.- Photovoltaic Cells 18 September 2009 11:52 UTC www.cisolar.com [Source type: Academic]
^ Connecting cells in parallel will yield a higher amperage.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ The cells, modules, and arrays can be connected in series or parallel, or typically a combination, to create a desired peak voltage output.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Individual solar cells can be connected in series and parallel to obtain desired voltages and currents.- Photovoltaics 20 November 2009 21:021 UTC www.epsea.org [Source type: FILTERED WITH BAYES]
^ Photovoltaic modules and arrays produce direct current (dc) electricity.- Photovoltaic Cells 18 September 2009 11:52 UTC digtheheat.com [Source type: Reference]
.^ The power output of a solar array is measured in watts or kilowatts .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Choices for measuring solar-cell output power .- Choices for measuring solar-cell output power - Electronic Products 28 January 2010 0:52 UTC www2.electronicproducts.com [Source type: Academic]
^ The power output of a solar array is given in watts or kilowatts .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ In order to calculate the typical energy needs of the application, a measurement in kilowatt-hours (or kilowatt-hours per day) is often used, which accounts for changes in insolation .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ In order to calculate the typical energy needs of the application, a measurement in watt-hours , kilowatt-hours or kilowatt-hours per day is often used.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The strength of a photovoltaic cell can be measured in kilowatt peak (kWp) – that’ the amount of energy the cell can generate in full sunlight.
A common
rule of thumb is that average power is equal to 20% of peak power, so that each peak kilowatt of solar array output power corresponds to energy production of 4.8 kWh per day (24 hours x 1 kW x 20% = 4.8 kWh)
.^ The roof can be used for electricity generating solar collectors.- Establishment and Platform for an E-government System and its Security 11 September 2009 6:16 UTC www.tomw.net.au [Source type: FILTERED WITH BAYES]
- Establishment and Platform for an E-government System and its Security 11 September 2009 6:16 UTC www.tomw.net.au [Source type: FILTERED WITH BAYES]
^ Gridconnected systems (on-grid systems) are connected to the grid and inject the electricity into the grid.- Photovoltaic Technology and Solar Cells | Renewable Energy Sources - Photovoltaic, Geothermal, Wind Plus Much More 28 January 2010 0:52 UTC www.renewable-energy-sources.com [Source type: FILTERED WITH BAYES]
^ Photovoltaics: Photovoltaic (or PV) systems convert light energy into electricity.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ Tags: solar cells , solar power Posted in solar power .- solar cells « Tek-Supply Blog 28 January 2010 0:52 UTC tek-supply.com [Source type: Academic]
^ Salyut 1 is powered by solar cells.
^ Discover new Solar Cells and other Electronic Components ...- Solar Cells Manufacturers & Suppliers 19 September 2009 6:58 UTC www.globalsources.com [Source type: General]
.^ Why should I use solar cells?- Solar Cells convert sunlight into electricity. Solar cells, a future of free energy | dasolar.com 28 January 2010 0:52 UTC www.dasolar.com [Source type: FILTERED WITH BAYES]
^ Element used in solar cells?- WikiAnswers - What element do solar cells rely on 28 January 2010 0:52 UTC wiki.answers.com [Source type: General]
^ Try to light up an LED using solar cells.- solarcell 28 January 2010 0:52 UTC www.exo.net [Source type: FILTERED WITH BAYES]
Theory
Simple explanation
.^ Solar cells are made of semiconductor materials, such as silicon.- Photovoltaic Technology and Solar Cells | Renewable Energy Sources - Photovoltaic, Geothermal, Wind Plus Much More 28 January 2010 0:52 UTC www.renewable-energy-sources.com [Source type: FILTERED WITH BAYES]
^ When enough sunlight (energy) is absorbed by the material (a semiconductor), electrons are dislodged from the material's atoms.- EIA Energy Kids - Solar 28 January 2010 0:52 UTC tonto.eia.doe.gov [Source type: Reference]
^ When sunlight strikes the solar panel, photons from the light are absorbed by the semiconductor atoms, which then release electrons.- Solar Panels from Wholesale Solar Renewable Energy 28 January 2010 0:52 UTC www.wholesalesolar.com [Source type: FILTERED WITH BAYES]
Due to the special composition of solar cells, the electrons are only allowed to move in a single direction.
An array of solar cells converts solar energy into a usable amount of direct current (DC) electricity.
Photogeneration of charge carriers
When a
photon hits a piece of silicon, one of three things can happen:
- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Photons with less energy than the band gap energy pass through the material.
^ An example is silicon, which has an energy gap of 1.1 eV. .- The Physics of Photovoltaic Cells 18 September 2009 11:52 UTC www.jgsee.kmutt.ac.th [Source type: Academic]
This generates an electron-hole pair and sometimes heat, depending on the band structure.
.^ When a photon is absorbed, its energy is given to an electron in the crystal lattice.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ What this means is that the energy of the absorbed light is transferred to the semiconductor and in turn this causes energy to knock loose electrons which then begin to flow freely.
^ When sunlight strikes the solar panel, photons from the light are absorbed by the semiconductor atoms, which then release electrons.- Solar Panels from Wholesale Solar Renewable Energy 28 January 2010 0:52 UTC www.wholesalesolar.com [Source type: FILTERED WITH BAYES]
.^ The valence electrons move in the space between the two atoms with energies in a band of energies known as the valence band (Fig.- The Physics of Photovoltaic Cells 18 September 2009 11:52 UTC www.jgsee.kmutt.ac.th [Source type: Academic]
^ Usually this electron is in the valence band , and is tightly bound in covalent bonds between neighboring atoms, and hence unable to move far.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The band gap is the amount of energy, expressed in electron volts (eV), required to kick an electron from a semiconductor's valence band, which is chock full of electrons bound to atoms, into its empty conduction band, where electrons are free to move.- A Step Closer to the Optimum Solar Cell 28 January 2010 0:52 UTC www.lbl.gov [Source type: FILTERED WITH BAYES]
.^ The energy given to it by the photon "excites" it into the conduction band, where it is free to move around within the semiconductor.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ The energy given to it by the photon "excites" it into the conduction band , where it is free to move around within the semiconductor.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Energy in excess of the amount needed to promote an electron into a conducting state is lost as heat to atomic vibrations (phonons) in the material lattice.- solar cells « Tek-Supply Blog 28 January 2010 0:52 UTC tek-supply.com [Source type: Academic]
.^ The covalent bond that the electron was previously a part of now has one less electron - this is known as a hole.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The covalent bond that the electron was previously a part of now has one fewer electron — this is known as a hole.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Equilibrium will quickly be reached as a couple electrons move to fill the holes, but as each one does, the potential gradient for following electrons increases more and more, making it less and less likely.- Photovoltaic Cells - WolfWikis 18 September 2009 11:52 UTC wikis.lib.ncsu.edu [Source type: FILTERED WITH BAYES]
.^ This leaves a hole behind that also moves .- Solar cell operation, Energy production Animations 28 January 2010 0:52 UTC www.educypedia.be [Source type: Academic]
^ This hole can easily be filled by an electron from an adjacent covalent bond, so the hole can move through the lattice.- The Physics of Photovoltaic Cells 18 September 2009 11:52 UTC www.jgsee.kmutt.ac.th [Source type: Academic]
^ The electrons move towards and through the junction, the holes in opposite direction.- Solar Cells - Chemistry Encyclopedia - structure, metal, equation, The pn Junction, Current-Voltage Characteristics, Solar Cell Materials, Optimization of Photon Absorption, Solar Cell Efficiency 28 January 2010 0:52 UTC www.chemistryexplained.com [Source type: Academic]
- Solar Cells – FREE Solar Cells information | Encyclopedia.com: Find Solar Cells research 19 September 2009 6:58 UTC www.encyclopedia.com [Source type: Academic]
.^ As photons hit the silicon layers, some of these photons create electron-hole pairs.- The Basics of a Photovoltaic Solar Cell: 28 January 2010 0:52 UTC teachers.usd497.org [Source type: FILTERED WITH BAYES]
^ Some photons do not carry enough energy to create the electron-hole pair.- The Basics of a Photovoltaic Solar Cell: 28 January 2010 0:52 UTC teachers.usd497.org [Source type: FILTERED WITH BAYES]
^ Each photon can cause only production of one electron-hole pair.
.^ Their energies are in another band known as the conduction band at a higher energy level than the valence band.- The Physics of Photovoltaic Cells 18 September 2009 11:52 UTC www.jgsee.kmutt.ac.th [Source type: Academic]
^ The energy given to it by the photon "excites" it into the conduction band, where it is free to move around within the semiconductor.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Photons with less energy than the band gap energy pass through the material.
.^ An example is silicon, which has an energy gap of 1.1 eV. .- The Physics of Photovoltaic Cells 18 September 2009 11:52 UTC www.jgsee.kmutt.ac.th [Source type: Academic]
^ Photons with less energy than the band gap energy pass through the material.
^ IR photons are much lower energy than visible light.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
.^ Photovoltaic cells, sometimes called solar cells, can convert light, such as sunlight, into electrical energy.
^ A photovoltaic cell converts this line radiation into electrical energy.- Thermionic-photovoltaic energy converter - Patent # 4528417 - PatentGenius 20 November 2009 21:021 UTC www.patentgenius.com [Source type: Reference]
^ A photovoltaic cell, commonly called a solar cell or PV, is the technology used to convert solar energy directly into electrical power.- EIA Energy Kids - Solar 28 January 2010 0:52 UTC tonto.eia.doe.gov [Source type: Reference]
Charge carrier separation
There are two main modes for charge carrier separation in a solar cell:
- drift of carriers, driven by an electrostatic field established across the device
- diffusion of carriers from zones of high carrier concentration to zones of low carrier concentration (following a gradient of electrochemical potential).
.^ Why should I use solar cells?- Solar Cells convert sunlight into electricity. Solar cells, a future of free energy | dasolar.com 28 January 2010 0:52 UTC www.dasolar.com [Source type: FILTERED WITH BAYES]
^ Separation of carriers by the p-n junction .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ In the widely used p-n junction solar cells, the dominant mode of charge carrier separation is by drift.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Co-sensitizers for dye sensitized solar cells .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Nanotechnology , Photovoltaics , Cell , Semiconductor , solar cell , researcher , power generation .- solar cell stories - ZDNet Asia 28 January 2010 0:52 UTC www.zdnetasia.com [Source type: News]
^ Separation of carriers by the p-n junction .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
[13]
The p-n junction
.^ Polycrystalline silicon solar cells .- The classification of solar cell 28 January 2010 0:52 UTC www.sunnybp.com [Source type: Academic]
^ Monocrystalline silicon solar cells .- The classification of solar cell 28 January 2010 0:52 UTC www.sunnybp.com [Source type: Academic]
^ Until recently most solar cells were made from single crystal silicon wafers.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
.^ As a simplification, one can imagine bringing a layer of n-type silicon into direct contact with a layer of p-type silicon.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Heliovolt is one of several startups developing a type of thin-film solar cell that converts light into electricity with a micrometers-thick layer of a copper-indium-gallium selenide (CIGS) semiconductor.
^ When we place a layer of n-type silicon on a layer of p-type silicon, a barrier is created at the junction of the two materials.- How solar power works - an introduction to solar cells and solar panels 19 September 2009 6:58 UTC www.explainthatstuff.com [Source type: FILTERED WITH BAYES]
.^ The way the hybrid nanorod-polymer solar cells are made is the key.- Power: Hybrid Nanorod-Polymer Solar Cell - Reviews by PC Magazine 28 January 2010 0:52 UTC www.pcmag.com [Source type: General]
^ Polycrystalline silicon solar cells .- The classification of solar cell 28 January 2010 0:52 UTC www.sunnybp.com [Source type: Academic]
^ Monocrystalline silicon solar cells .- The classification of solar cell 28 January 2010 0:52 UTC www.sunnybp.com [Source type: Academic]
.^ When n- and p-type silicon come into contact, excess electrons move from the n-type side to the p-type side.
^ If we imagine what happens when a piece of p-type silicon is placed in intimate contact with a piece of n-type silicon, then what occurs is a diffusion of electrons from the region of high electron concentration - the n-type side of the junction, into the region of low electron concentration - p-type side of the junction.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Likewise, there is a diffusion of holes across the junction from the p-type side to the n-type side.- The Physics of Photovoltaic Cells 18 September 2009 11:52 UTC www.jgsee.kmutt.ac.th [Source type: Academic]
.^ Here, they recombine with a hole that was either created as an electron-hole pair on the p-type side of the solar cell, or swept across the junction from the n-type side after being created there.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Electrons may pass from the n-type side into the p-type side, and holes may pass from the p-type side to the n-type side.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The freed electrons from the n-junction side move toward the holes in the p-junction section.- Gallium arsenide solar cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ At this junction, an interior electric field is built up which leads to the separation of the charge carriers that are released by light.- HOW TO DESIGN A SOLAR POWERED CAR THAT WORKS | PHOTOVOLTAIC CELLS ARRAY 28 January 2010 0:52 UTC www.speedace.info [Source type: Reference]
^ At p-n junction, an electric field is built up which leads to the separation of the charge carriers (electrons and holes).
^ The diffusion of carriers does not happen indefinitely however, because of an electric field which is created by the imbalance of charge immediately either side of the junction which this diffusion creates.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ The unit of resistance to the flow of an electric current.- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
^ To maintain charge neutrality, an excited electron will also have a corresponding ‘hole’ that balances the electron’s charge.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ However, the electric field pulls electrons and holes in opposing directions.- The Basics of a Photovoltaic Solar Cell: 28 January 2010 0:52 UTC teachers.usd497.org [Source type: FILTERED WITH BAYES]
.^ This region where electrons have diffused across the junction is called the depletion region because it no longer contains any mobile charge carriers.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These carriers can diffuse over to the junction, where they will be swept across by the built-in electric field in the depletion region.- Solar Cells 28 January 2010 0:52 UTC cnx.org [Source type: General]
- Solar Cells 28 January 2010 0:52 UTC cnx.org [Source type: General]
^ At this junction, there are virtually no mobile charge carriers.- The Basics of a Photovoltaic Solar Cell: 28 January 2010 0:52 UTC teachers.usd497.org [Source type: FILTERED WITH BAYES]
.^ It is also known as the "space charge region".- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
Connection to an external load
.^ Each cell is made from a slab of semiconductor...- Photovoltaic Cells - Shop Smarter.com 18 September 2009 11:52 UTC www.smarter.com [Source type: General]
- Free Photovoltaic Cells - Shop Smarter.com 18 September 2009 11:52 UTC www.smarter.com [Source type: General]
^ Place the solar cells on a metal plate, ideally made from copper.- 150 3x6 Everbright Solar Untabbed Cells Grade B 28 January 2010 0:52 UTC www.everbrightsolar.net [Source type: FILTERED WITH BAYES]
^ Solar cells can be made from single crystals, crystalline and amorphous semiconductors.- Solar Cells - Chemistry Encyclopedia - structure, metal, equation, The pn Junction, Current-Voltage Characteristics, Solar Cell Materials, Optimization of Photon Absorption, Solar Cell Efficiency 28 January 2010 0:52 UTC www.chemistryexplained.com [Source type: Academic]
- Solar Cells – FREE Solar Cells information | Encyclopedia.com: Find Solar Cells research 19 September 2009 6:58 UTC www.encyclopedia.com [Source type: Academic]
.^ If Ohmic metal-semiconductor contacts are made to both the n-type and p-type sides of the solar cell, and the electrodes connected to an external load, then electrons which are created on the n-type side, or have been "collected" by the junction and swept onto the n-type side may travel through the wire, power the load, and continue through the wire until they reach the p-type semiconductor-metal contact where they recombine with a hole which was either created as an electron-hole pair on the p-type side of the solar cell, or swept across the junction from the n-type side after being created there.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Electron energies in a p-type semiconductor.- The Physics of Photovoltaic Cells 18 September 2009 11:52 UTC www.jgsee.kmutt.ac.th [Source type: Academic]
^ Hence, these may be different semiconductors (or the same semiconductor with different types of conduction), or they may be a metal and a semiconductor.- solar cell (electronics) -- Britannica Online Encyclopedia 28 January 2010 0:52 UTC www.britannica.com [Source type: Reference]
.^ Hoffman Electronics creates a 14 percent efficient solar cell.- Power Polymers Fuel Solar Cell Advances - 2007-10-08 00:00:00 | Design News 28 January 2010 0:52 UTC www.designnews.com [Source type: FILTERED WITH BAYES]
^ In this situation, instead of recombination, we will get photo-generation of electron hole pairs.- Solar Cells 28 January 2010 0:52 UTC cnx.org [Source type: General]
^ Here, they recombine with a hole that was either created as an electron-hole pair on the p-type side of the solar cell, or swept across the junction from the n-type side after being created there.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
The voltage measured is equal to the difference in the
quasi Fermi levels of the minority carriers, i.e. electrons in the p-type portion and holes in the n-type portion.
Equivalent circuit of a solar cell
The equivalent circuit of a solar cell
The schematic symbol of a solar cell
.^ Why should I use solar cells?- Solar Cells convert sunlight into electricity. Solar cells, a future of free energy | dasolar.com 28 January 2010 0:52 UTC www.dasolar.com [Source type: FILTERED WITH BAYES]
^ Hoffman Electronics creates a 14 percent efficient solar cell.- Power Polymers Fuel Solar Cell Advances - 2007-10-08 00:00:00 | Design News 28 January 2010 0:52 UTC www.designnews.com [Source type: FILTERED WITH BAYES]
^ Hoffman Electronics creates a 14% efficient solar cell.- Solar Cell History & Timeline 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ An ideal solar cell may be modelled by a current source in parallel with a diode ; in practice no solar cell is ideal, so a shunt resistance and a series resistance component are added to the model.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Individual solar cells can be connected in series and parallel to obtain desired voltages and currents.- Photovoltaics 20 November 2009 21:021 UTC www.epsea.org [Source type: FILTERED WITH BAYES]
^ Current solar cell News: .- solar cell Facts, information, pictures | Encyclopedia.com articles about solar cell 28 January 2010 0:52 UTC www.encyclopedia.com [Source type: Academic]
[14] .^ Search Results for 'solar cells' .
^ The structure of a solar cell is shown in Figure 1.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ The resulting equivalent circuit of a solar cell is shown on the left.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Why should I use solar cells?- Solar Cells convert sunlight into electricity. Solar cells, a future of free energy | dasolar.com 28 January 2010 0:52 UTC www.dasolar.com [Source type: FILTERED WITH BAYES]
^ The structure of a solar cell is shown in Figure 1.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ Also shown, on the right, is the schematic representation of a solar cell for use in circuit diagrams.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
Characteristic equation
From the equivalent circuit it is evident that the current produced by the solar cell is equal to that produced by the current source, minus that which flows through the diode, minus that which flows through the shunt resistor:
[15][16]
- I = IL − ID − ISH
where
- I = output current (amperes)
- IL = photogenerated current (amperes)
- ID = diode current (amperes)
- ISH = shunt current (amperes).
The current through these elements is governed by the voltage across them:
- Vj = V + IRS
where
- Vj = voltage across both diode and resistor RSH (volts)
- V = voltage across the output terminals (volts)
- I = output current (amperes)
- RS = series resistance (Ω).
![I_{D} = I_{0} \left\{\exp\left[\frac{qV_{j}}{nkT}\right] - 1\right\}](http://images-mediawiki-sites.thefullwiki.org/07/3/9/2/5146193398472199.png)
[17]
where
By
Ohm's law, the current diverted through the shunt resistor is:
where
- RSH = shunt resistance (Ω).
Substituting these into the first equation produces the characteristic equation of a solar cell, which relates solar cell parameters to the output current and voltage:
![I = I_{L} - I_{0} \left\{\exp\left[\frac{q(V + I R_{S})}{nkT}\right] - 1\right\} - \frac{V + I R_{S}}{R_{SH}}.](http://images-mediawiki-sites.thefullwiki.org/03/2/1/8/75498314030736931.png)
.^ RESTRICTED RESTRICTED On the left side of the device and downward is located the operating switch number 9, and the alternative cycle switch number 8 which is used to operate the tape pulling system manually.- http://www.gulflink.osd.mil/declassdocs/dia/19961031/961031_ln179-95_1.html 25 September 2009 7:27 UTC www.gulflink.osd.mil [Source type: Reference]
.^ To further explain, two objects at the same physical temperature will not 'appear' the same temperature in an infrared image if they have differing emissivities.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
.^ A solar cell may operate over a wide range of voltages (V) and currents (I).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Plug in any standard 120-volt appliance or electronic device, and it will analyze such things as current draw, incoming voltage and cost of operation.- Sustainable Design Update » Blog Archive » New High Efficiency Solar Cells 28 January 2010 0:52 UTC sustainabledesignupdate.com [Source type: FILTERED WITH BAYES]
^ The current-voltage characteristic through a pn -junction is given by the typical diode equation: .- Solar Cells - Chemistry Encyclopedia - structure, metal, equation, The pn Junction, Current-Voltage Characteristics, Solar Cell Materials, Optimization of Photon Absorption, Solar Cell Efficiency 28 January 2010 0:52 UTC www.chemistryexplained.com [Source type: Academic]
.^ Electron-hole pairs generated in a photovoltaic cell by the absorption of photons increase the number of minority carriers on both sides of the n-p junction.- The Physics of Photovoltaic Cells 18 September 2009 11:52 UTC www.jgsee.kmutt.ac.th [Source type: Academic]
^ The diffusion of carriers does not happen indefinitely however, because of an electric field which is created by the imbalance of charge immediately either side of the junction which this diffusion creates.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This diffusion of carriers does not happen indefinitely however, because of the electric field which is created by the imbalance of charge immediately either side of the junction which this diffusion creates.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
However, even without a solution it is physically instructive. Furthermore, it is easily solved using
numerical methods.
.^ Concentrators can be used to generate extremely high temperatures, making solar furnaces possible.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
^ Since concentrated solar uses existing generators, piping and mirrors, the production costs are much lower than PV solar and don’t require special production facilities.- Industry:Solar Power 28 January 2010 0:52 UTC www.wikinvest.com [Source type: FILTERED WITH BAYES]
- Industry:Solar Power 28 January 2010 0:52 UTC www.wikinvest.com [Source type: FILTERED WITH BAYES]
)
.^ Solar cells have many applications.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The most common solar cells function by the photovoltaic effect.- HOW TO DESIGN A SOLAR POWERED CAR THAT WORKS | PHOTOVOLTAIC CELLS ARRAY 28 January 2010 0:52 UTC www.speedace.info [Source type: Reference]
^ Solar cell efficiency is a most valuable measure of its performance.- Solar Cells - Chemistry Encyclopedia - structure, metal, equation, The pn Junction, Current-Voltage Characteristics, Solar Cell Materials, Optimization of Photon Absorption, Solar Cell Efficiency 28 January 2010 0:52 UTC www.chemistryexplained.com [Source type: Academic]
- Solar Cells – FREE Solar Cells information | Encyclopedia.com: Find Solar Cells research 19 September 2009 6:58 UTC www.encyclopedia.com [Source type: Academic]
Open-circuit voltage and short-circuit current
.^ The test cell, which was .25 centimeters 2 , had an open circuit voltage of 999mV, a short circuit current of 29.7 square mA/cm, and a fill factor of 83.2%.- Gallium arsenide solar cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ As R L gets bigger and bigger, we keep moving along the curve until, at point C, where R L is an open and we have the maximum voltage across the device, but, of course, no current coming out!- Solar Cells 28 January 2010 0:52 UTC cnx.org [Source type: General]
^ In order to make the appropriate voltages and outputs available for different applications, single solar cells are interconnected to form larger units.- HOW TO DESIGN A SOLAR POWERED CAR THAT WORKS | PHOTOVOLTAIC CELLS ARRAY 28 January 2010 0:52 UTC www.speedace.info [Source type: Reference]
Assuming the shunt resistance is high enough to neglect the final term of the characteristic equation, the open-circuit voltage
VOC is:
.^ In this tandem cell the short-circuit current exceeds that of the current-limiting subcell.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
^ The test cell, which was .25 centimeters 2 , had an open circuit voltage of 999mV, a short circuit current of 29.7 square mA/cm, and a fill factor of 83.2%.- Gallium arsenide solar cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Schematics of a typical solar cell with light falling through an electrode grid onto a semiconductor sheet containing a pn junction that separates electrons and holes that flow to the respective electrodes and create a current through an external circuit.- Solar Cells - Chemistry Encyclopedia - structure, metal, equation, The pn Junction, Current-Voltage Characteristics, Solar Cell Materials, Optimization of Photon Absorption, Solar Cell Efficiency 28 January 2010 0:52 UTC www.chemistryexplained.com [Source type: Academic]
It can be shown that for a high-quality solar cell (low
RS and
I0, and high
RSH) the short-circuit current
ISC is:
Effect of physical size
.^ At the other end of the plant, 100,000 solar cells, each about the size of a CD case, will come off the line every day.- Outlook for solar cells is sunny | Marketplace From American Public Media 28 January 2010 0:52 UTC marketplace.publicradio.org [Source type: General]
^ Because of their small size, they exhibit unusual and interesting properties governed by quantum mechanics, such as the absorption of different colors of light depending upon their size.- Solar Cell Power Doubler - KeelyNet 12/17/01 28 January 2010 0:52 UTC www.keelynet.com [Source type: FILTERED WITH BAYES]
^ At the start of the value chain is the polysilicon, which is then used to make silicon wafers, which in turn are used to construct solar cells and finally modules.- Industry:Solar Power 28 January 2010 0:52 UTC www.wikinvest.com [Source type: FILTERED WITH BAYES]
- Industry:Solar Power 28 January 2010 0:52 UTC www.wikinvest.com [Source type: FILTERED WITH BAYES]
.^ The dye-sensitized solar cell depends on a mesoporous layer of nanoparticulate titanium dioxide to greatly amplify the surface area (200-300 m²/gram TiO 2 , as compared to approximately 10 m²/gram of flat single crystal).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The best commercial-grade silicon cells currently have efficiencies a little lower than this, so 18-20% is either for lab-grown silicon or commercial III-V single-junction cells.- Of Circles and Solar Cells | Popular Science 28 January 2010 0:52 UTC www.popsci.com [Source type: General]
^ The dye-sensitized solar cell depends on a mesoporous layer of nanoparticulate titanium dioxide to greatly amplify the surface area (200-300 m²/g TiO 2 , as compared to approximately 10 m²/g of flat single crystal).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ This an electrical device which prevents the batteries from being ruined through overcharging, and which also prevents electrical current from flowing back out of the battery into the PV module or solar panel.- Photovoltaic Cells 18 September 2009 11:52 UTC www.squidoo.com [Source type: General]
^ The freed electrons cannot return to the positively charged sites ("holes") without flowing through an external circuit, thus generating current.- Photovoltaics 20 November 2009 21:021 UTC www.epsea.org [Source type: FILTERED WITH BAYES]
^ The voltage developed across a cell by the current flow through the resistance of the cell.- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
For this reason, the characteristic equation is frequently written in terms of
current density, or current produced per unit cell area:
![J = J_{L} - J_{0} \left\{\exp\left[\frac{q(V + J r_{S})}{nkT}\right] - 1\right\} - \frac{V + J r_{S}}{r_{SH}}](http://images-mediawiki-sites.thefullwiki.org/02/2/7/4/64916744088457775.png)
where
- J = current density (amperes/cm2)
- JL = photogenerated current density (amperes/cm2)
- J0= reverse saturation current density (amperes/cm2)
- rS = specific series resistance (Ω-cm2)
- rSH = specific shunt resistance (Ω-cm2).
This formulation has several advantages.
.^ However, it may be desirable to primarily coat only one side, since double-sided coating can result in waste of valuable components of the ink, e.g., indium.- SOLUTION-BASED FABRICATION OF PHOTOVOLTAIC CELL - Patents 20 November 2009 21:021 UTC www.faqs.org [Source type: Reference]
^ But since the sign of the charge on electrons and holes is opposite, conventional current may only flow in one direction.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ In solar cell fabrication, however, one seeks to construct a large-area device because the power produced is proportional to the illuminated area.- solar cell (electronics) -- Britannica Online Encyclopedia 28 January 2010 0:52 UTC www.britannica.com [Source type: Reference]
.^ In use, radiant photon energy shines on the surface of the photovoltaic cell causing electrons to move between the electrodes on the cell.
^ Use of lunar material has also been widely proposed for manufacture of solar cells for satellite solar power stations [4] .- Artemis Project: Lunar Production of Solar Cells 28 January 2010 0:52 UTC www.asi.org [Source type: Academic]
^ Newer techniques use technical-grade silicon cast into blocks, sawed into wafers, and fabricated into cells using the same processes as used in single crystal material.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
.^ Another advantage of the reduced mass is that less support is needed when placing panels on rooftops and it allows fitting panels on light materials or flexible materials, even textiles.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Semiconductor particles layer [0052] In order to apply the semiconductor particles to the electrically conductive support, a method may be used which comprises applying a dispersion or colloid solution of semiconductor particles to an electrically conductive support.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
^ Even in the best latitudes, homes that barely make a surplus from the day require far more than that surplus to use at night.- DailyTech - Record Setting Photovoltaic Cell is 40.8 Percent Efficient 20 November 2009 21:021 UTC www.dailytech.com [Source type: General]
There are practical limitations of this formulation.
.^ The photoelectric cell body is painted with a certain paint in order to avoid the effect of moisture on the photoelectric cell work.- http://www.gulflink.osd.mil/declassdocs/dia/19961031/961031_ln179-95_1.html 25 September 2009 7:27 UTC www.gulflink.osd.mil [Source type: Reference]
.^ The barrier may include UV stabilizers and/or UV absorbing luminescent chromophores (which emit at higher wavelengths) and antioxidants to protect and improve the efficiency of the cell.
^ However, they can easily be formed into square shapes that cover a greater fraction of a panel than monocrystalline cells, and this compensates for their lower efficiencies.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ The solid may be ground at that temperature until small nanoparticles (e.g., less than 5 nm) are present.- SOLUTION-BASED FABRICATION OF PHOTOVOLTAIC CELL - Patents 20 November 2009 21:021 UTC www.faqs.org [Source type: Reference]
.^ Please mind that these are not the premium efficiency or the largest panels, but modest 175-185 Watts per panel, made in China production surplus.
^ While other cells are made from thin films of metal (such as CdTe, CIGS and IGN) these metals are safely contained within the cell and do not pose health risks [12] .- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ These cells are typically made using silicon wafer.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Solar cells should have a useful life of at least 10 years.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ What's the minimum size (% )of a broken or chipped solar cell I should use in… .
^ Solar cell panels also are used to provide electric power in many remote terrestrial locations where conventional electric power sources are either unavailable or prohibitively expensive to install.- solar cell (electronics) -- Britannica Online Encyclopedia 28 January 2010 0:52 UTC www.britannica.com [Source type: Reference]
.^ Crystalline silicon solar cells typically use silicon or polysilicon substrates.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
^ Candidate solar cell types are crystalline silicon and amorphous silicon.- Artemis Project: Lunar Production of Solar Cells 28 January 2010 0:52 UTC www.asi.org [Source type: Academic]
^ Crystalline silicon solar cells come in three primary categories: .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
[18] [19]
Cell temperature
Effect of temperature on the current-voltage characteristics of a solar cell
.^ It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.- Solar powered electric candle - US Patent 6929381 Description 25 September 2009 7:27 UTC www.patentstorm.us [Source type: Reference]
^ A modern car engine itself is far more efficient than one from 1915.- DailyTech - Record Setting Photovoltaic Cell is 40.8 Percent Efficient 20 November 2009 21:021 UTC www.dailytech.com [Source type: General]
^ In fact, the sunlight falling on a very small fraction of a home's roof is typically more than enough to provide all the energy needs of a home.- Solar Primer 28 January 2010 0:52 UTC www.nmsea.org [Source type: FILTERED WITH BAYES]
While increasing
T reduces the magnitude of the exponent in the characteristic equation, the value of
I0 increases exponentially with
T.
.^ The test cell, which was .25 centimeters 2 , had an open circuit voltage of 999mV, a short circuit current of 29.7 square mA/cm, and a fill factor of 83.2%.- Gallium arsenide solar cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ The device open-circuit voltage, efficiency, and thermal stability are all affected by the IFL, and performance enhancement over PEDOT:PSS devices is achieved.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
^ This is the ratio of the maximum power point divided by the open circuit voltage ( V oc ) and the short circuit current ( I sc ): .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ That will lead to darkening the active photoelectric cell, and as a result a change in the photoelectric unit of the device and an increase of the voltage on the valve lattice causing it to glow.- http://www.gulflink.osd.mil/declassdocs/dia/19961031/961031_ln179-95_1.html 25 September 2009 7:27 UTC www.gulflink.osd.mil [Source type: Reference]
^ They can stand temperatures of up to 70 [degrees] C but the plastic laminating material between the cells and the glass cover will yellow with time if exposed to higher temperatures.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ A way of joining photovoltaic cells or batteries by connecting positive leads to negative leads; such a configuration increases the voltage.- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
.^ Why not compare most efficient in the world solar cell to the most efficient in the world car?- DailyTech - Record Setting Photovoltaic Cell is 40.8 Percent Efficient 20 November 2009 21:021 UTC www.dailytech.com [Source type: General]
^ The best cells made have an efficiency of 19%.- Artemis Project: Lunar Production of Solar Cells 28 January 2010 0:52 UTC www.asi.org [Source type: Academic]
^ Silicon-based solar cells have been around since the 1960s.- Photovoltaics (solar cells) - briefing document 28 January 2010 0:52 UTC www.abelard.org [Source type: FILTERED WITH BAYES]
.^ Tempered glass cannot be used with amorphous silicon cells because of the high temperatures during the deposition process.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Because the cells produce electricity that would otherwise be made by more polluting forms of power generation, use of solar cells can increase air quality.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ This electron-hole pair may then travel to the surface of the solar cell and contribute to the current produced by the cell; such a carrier is said to be collected .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Candidate solar cell types are crystalline silicon and amorphous silicon.- Artemis Project: Lunar Production of Solar Cells 28 January 2010 0:52 UTC www.asi.org [Source type: Academic]
^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Tempered glass cannot be used with amorphous silicon cells because of the high temperatures during the deposition process.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ These cells have about 6% efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These cells have low efficiencies around 8%.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ The material could lead to relatively inexpensive, highly-efficient solar cells that would be much simpler to make than today's high-end multijunction solar cells.” .- Photovoltaics (solar cells) - briefing document 28 January 2010 0:52 UTC www.abelard.org [Source type: FILTERED WITH BAYES]
^ These materials are typically less efficient than silicon, but can be manufactured at much lower costs.- Power Polymers Fuel Solar Cell Advances - 2007-10-08 00:00:00 | Design News 28 January 2010 0:52 UTC www.designnews.com [Source type: FILTERED WITH BAYES]
^ Regarding the cited 7% efficiency of solar panels: As noted above, there ARE some panels which have recently been tested in laboratories to be of much higher efficiency than I cite here.- http://mb-soft.com/solar/photovol.html 18 September 2009 11:52 UTC mb-soft.com [Source type: Original source]
.^ Why not compare most efficient in the world solar cell to the most efficient in the world car?- DailyTech - Record Setting Photovoltaic Cell is 40.8 Percent Efficient 20 November 2009 21:021 UTC www.dailytech.com [Source type: General]
^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The structure of a solar cell is shown in Figure 1.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
Series resistance
Effect of series resistance on the current-voltage characteristics of a solar cell
.^ The unit of resistance to the flow of an electric current.- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
^ The voltage developed across a cell by the current flow through the resistance of the cell.- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
^ An ideal solar cell may be modelled by a current source in parallel with a diode ; in practice no solar cell is ideal, so a shunt resistance and a series resistance component are added to the model.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ When many electrons, each carrying a negative charge, travel toward the front surface of the cell, the resulting imbalance of charge between the cell's front and back surfaces creates a voltage potential like the negative and positive terminals of a battery.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
- Now Class: A "Photovoltaic Cell" Lesson..... | Solar Feeds News And Commentary Network 20 November 2009 21:021 UTC www.solarfeeds.com [Source type: News]
^ I-V data --The relationship between current and voltage of a photovoltaic device in the power-producing quadrant, as a set of ordered pairs of current and voltage readings in a table, or as a curve plotted in a suitable coordinate system (i.e., Cartesian).- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
^ (MPP)--The point on the current-voltage (I-V) curve of a module under illumination, where the product of current and voltage is maximum.- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
.^ These are called heterojunction solar cells.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ High quality and products assurance Made in China.solar cell supplied by Chinese manufacturer with the most competitive price and super quality.- solar cell, China solar cell,solar cell Manufacturer,solar cell factory,solar cell suppliers 28 January 2010 0:52 UTC www.solar-sunny.com [Source type: FILTERED WITH BAYES]
^ These semiconductors are especially attractive for thin film solar cell application because of their high optical absorption coefficients and versatile optical and electrical characteristics which can in principle be manipulated and tuned for a specific need in a given device.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ These are called heterojunction solar cells.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ The structure of a solar cell is shown in Figure 1.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ Crystalline silicon solar cells typically use silicon or polysilicon substrates.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
.^ An ideal solar cell may be modelled by a current source in parallel with a diode ; in practice no solar cell is ideal, so a shunt resistance and a series resistance component are added to the model.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ A new method is presented to image quantitatively series resistance and dark saturation current density on silicon solar cells.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
^ This Letter introduces a fast converging iterative procedure for calculating images of the series resistance ( R s ) and saturation current density from two electroluminescence (EL) images.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
.^ One of the most important properties of a solar cell is its series resistance.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
^ It is therefore important that the recycling efficiency of the process be high.- Artemis Project: Lunar Production of Solar Cells 28 January 2010 0:52 UTC www.asi.org [Source type: Academic]
^ In order to enhance the efficiency of generation of electricity, it is most important to take light beam into the module without any loss.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
Shunt resistance
Effect of shunt resistance on the current–voltage characteristics of a solar cell
.^ An ideal solar cell may be modelled by a current source in parallel with a diode ; in practice no solar cell is ideal, so a shunt resistance and a series resistance component are added to the model.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Through the above mechanism a negative voltage is formed on the valve (Cyrillic text) (figure number 2) which leads to preventing electric current from going through (closed valve).- http://www.gulflink.osd.mil/declassdocs/dia/19961031/961031_ln179-95_1.html 25 September 2009 7:27 UTC www.gulflink.osd.mil [Source type: Reference]
^ If order to increase the stability of the light block of the valve lattice (Cyrillic text), the ground should be connected through the condenser (Cyrillic text) voltage.- http://www.gulflink.osd.mil/declassdocs/dia/19961031/961031_ln179-95_1.html 25 September 2009 7:27 UTC www.gulflink.osd.mil [Source type: Reference]
.^ When many electrons, each carrying a negative charge, travel toward the front surface of the cell, the resulting imbalance of charge between the cell's front and back surfaces creates a voltage potential like the negative and positive terminals of a battery.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
- Now Class: A "Photovoltaic Cell" Lesson..... | Solar Feeds News And Commentary Network 20 November 2009 21:021 UTC www.solarfeeds.com [Source type: News]
^ I-V data --The relationship between current and voltage of a photovoltaic device in the power-producing quadrant, as a set of ordered pairs of current and voltage readings in a table, or as a curve plotted in a suitable coordinate system (i.e., Cartesian).- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
^ Most current plans for a lunar base assume that the base will include an industrial facility, primarily to produce oxygen for propulsion systems by reduction of the lunar soil [1] .- Artemis Project: Lunar Production of Solar Cells 28 January 2010 0:52 UTC www.asi.org [Source type: Academic]
Very low values of
RSH will produce a significant reduction in
VOC.
.^ High quality and products assurance Made in China.solar cell supplied by Chinese manufacturer with the most competitive price and super quality.- solar cell, China solar cell,solar cell Manufacturer,solar cell factory,solar cell suppliers 28 January 2010 0:52 UTC www.solar-sunny.com [Source type: FILTERED WITH BAYES]
^ The key to getting solar gain at the right time (winter), and not at the wrong time (summer) is to take advantage of the fact that the path taken by the winter sun is much lower in the southern sky than the path taken by the summer sun (which passes nearly overhead at high noon: .- Solar Primer 28 January 2010 0:52 UTC www.nmsea.org [Source type: FILTERED WITH BAYES]
^ These semiconductors are especially attractive for thin film solar cell application because of their high optical absorption coefficients and versatile optical and electrical characteristics which can in principle be manipulated and tuned for a specific need in a given device.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ These are called heterojunction solar cells.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ The structure of a solar cell is shown in Figure 1.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ Crystalline silicon solar cells typically use silicon or polysilicon substrates.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
Reverse saturation current
Effect of reverse saturation current on the current-voltage characteristics of a solar cell
If one assumes infinite shunt resistance, the characteristic equation can be solved for VOC:
.^ Generally, reduction in the melting point is inversely proportional to the particle radius, i.e., the smaller the nanoparticles, the lower the melting point.- SOLUTION-BASED FABRICATION OF PHOTOVOLTAIC CELL - Patents 20 November 2009 21:021 UTC www.faqs.org [Source type: Reference]
This explains mathematically the reason for the reduction in
VOC that accompanies increases in temperature described above.
.^ Crystalline silicon solar cells typically use silicon or polysilicon substrates.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
^ Candidate solar cell types are crystalline silicon and amorphous silicon.- Artemis Project: Lunar Production of Solar Cells 28 January 2010 0:52 UTC www.asi.org [Source type: Academic]
^ Crystalline silicon solar cells come in three primary categories: .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ This region where electrons have diffused across the junction is called the depletion region because it no longer contains any mobile charge carriers.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ They should demonstrate a measurable bias in current flow , which is the hallmark of semiconductor transistors .- A New Solar Cell 28 January 2010 0:52 UTC www.chemexplore.net [Source type: FILTERED WITH BAYES]
^ This imbalance of charge across the p-n junction sets up an electric field which opposes further diffusion of charge carriers across the junction.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ If they are created within a minority carrier diffusion length of the junction, then, depending on which side of the junction the electron-hole pair is created, the electric field at the junction will either sweep the electron to the n-type side, or the hole to the p-type side.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ If a piece of p-type silicon is placed in intimate contact with a piece of n-type silicon, then a diffusion of electrons occurs from the region of high electron concentration (the n-type side of the junction) into the region of low electron concentration (p-type side of the junction).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ When the electrons diffuse across the p-n junction, they recombine with holes on the p-type side.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
Ideality factor
Effect of ideality factor on the current-voltage characteristics of a solar cell
.^ Also called depletion zone, cell junction, or space charge.- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
^ It is also known as the "space charge region".- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ An ideal solar cell may be modelled by a current source in parallel with a diode ; in practice no solar cell is ideal, so a shunt resistance and a series resistance component are added to the model.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
A perfect match to theory is indicated when
n = 1.
.^ It is also known as the "space charge region".- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The structure of a solar cell is shown in Figure 1.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ Crystalline silicon solar cells typically use silicon or polysilicon substrates.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
.^ Why not compare most efficient in the world solar cell to the most efficient in the world car?- DailyTech - Record Setting Photovoltaic Cell is 40.8 Percent Efficient 20 November 2009 21:021 UTC www.dailytech.com [Source type: General]
^ All solar cells are junction diodes.- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
^ The dye-sensitized solar cell depends on a mesoporous layer of nanoparticulate titanium dioxide to greatly amplify the surface area (200-300 m²/gram TiO 2 , as compared to approximately 10 m²/gram of flat single crystal).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ It is also known as the "space charge region".- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Some generating equipment may be operated at certain times as peaking capacity and at other times to serve loads on an around-the-clock basis.- Dictionary of Energy - definisions - Energy Glossary - P 20 November 2009 21:021 UTC www.photius.com [Source type: Reference]
^ Plugged-back footage: Under certain conditions, drilling operations may be continued to a greater depth than that at which a potentially productive formation is found.- Dictionary of Energy - definisions - Energy Glossary - P 20 November 2009 21:021 UTC www.photius.com [Source type: Reference]
This is characterized by a significant increase in
I0 as well as an increase in ideality factor to
n ≈ 2.
.^ Individual solar cells provide a relatively small amount of power, but electrical output can be significant when cells are connected together in a PV module.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ That will lead to darkening the active photoelectric cell, and as a result a change in the photoelectric unit of the device and an increase of the voltage on the valve lattice causing it to glow.- http://www.gulflink.osd.mil/declassdocs/dia/19961031/961031_ln179-95_1.html 25 September 2009 7:27 UTC www.gulflink.osd.mil [Source type: Reference]
^ Because the cells produce electricity that would otherwise be made by more polluting forms of power generation, use of solar cells can increase air quality.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ If such an increase could result in a net decrease in cost of 50%(ish) you'd see a very different reality.- DailyTech - Record Setting Photovoltaic Cell is 40.8 Percent Efficient 20 November 2009 21:021 UTC www.dailytech.com [Source type: General]
Typically,
I0 is the more significant factor and the result is a reduction in voltage.
Solar cell efficiency factors
Energy conversion efficiency
Dust often accumulates on the glass of solar panels seen here as black dots.
.^ This term should not be confused with energy conversion efficiency , as it does not convey information about the power collected from the solar cell.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Photovoltaic cells, sometimes called solar cells, can convert light, such as sunlight, into electrical energy.
^ Photovoltaics: Photovoltaic (or PV) systems convert light energy into electricity.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ This term is calculated using the ratio of P m , divided by the input light irradiance under "standard" test conditions ( E , in W/m 2 ) and the surface area of the solar cell ( A c in m²).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This term is calculated using the ratio of the maximum power point, P m , divided by the input light irradiance ( E , in W/m²) under standard test conditions (STC) and the surface area of the solar cell ( A c in m²).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The efficiency of a solar cell is defined as the ratio of the electrical power output to the solar power input.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
.^ STC specifies a temperature of 25°C and an irradiance of 1000 W/m² with an air mass 1.5 (AM1.5) spectrum.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ (STC) --Conditions under which a module is typically tested in a laboratory: (1) Irradiance intensity of 1000 W/square meter (0.645 watts per square inch), AM1.5 solar reference spectrum, and (3) a cell (module) temperature of 25 degrees C, plus or minus 2 degrees C (77 degrees F, plus or minus 3.6 degrees F).- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
^ W/m² solar reference spectrum AM ( airmass ) 1.5 cell temperature 25 °C .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ These correspond to the irradiance and spectrum of sunlight incident on a clear day upon a sun-facing 37°-tilted surface with the sun at an angle of 41.81° above the horizon.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ These latter materials are transparent to most ultraviolet rays of the sun's spectrum , and so would permit more radiant energy to reach the pentacene layer below .- A New Solar Cell 28 January 2010 0:52 UTC www.chemexplore.net [Source type: FILTERED WITH BAYES]
^ These photons contain various amounts of energy corresponding to the different wavelengths of the solar spectrum.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
[20][21] .^ This condition approximately represents solar noon near the spring and autumn equinoxes in the continental United States with surface of the cell aimed directly at the sun.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The dye-sensitized solar cell depends on a mesoporous layer of nanoparticulate titanium dioxide to greatly amplify the surface area (200-300 m²/gram TiO 2 , as compared to approximately 10 m²/gram of flat single crystal).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Review Today?s commercial solar cells only convert 15% of the sun?s radiant energy into electricity.- Solar Cells - Shop Smarter.com 28 January 2010 0:52 UTC www.smarter.com [Source type: General]
.^ Thus, a typical 1 m solar panel in direct sunlight will produce approximately 120 watts of peak power.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ These cells have low efficiencies around 8%.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Thus, under these conditions a solar cell of 12% efficiency with a 100 cm 2 (0.01 m 2 ) surface area can be expected to produce approximately 1.2 watts of power.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ There are two main modes for charge carrier separation in a solar cell: .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Charge carrier separation .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ These products are expected to have monocrystalline cell conversion efficiencies of 18.5% and multicrystalline cell efficiencies of 17%.
^ In addition, thin films of many of these materials on conventional silicon solar cells can increase the optical coupling efficiency into the silicon cell, thus boosting the overal efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ In addition, thin films of many of these materials on conventional silicon solar cells can increase the optical coupling efficiency into the silicon cell, thus boosting the overall efficiency.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ The EPT of a panel is dependent on many factors such as manufacturing process, the panel efficiency, the amount of carbon in the electricity mix where the panel is manufactured, the geographical location of where the panel is operating along with many other factors.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ If these are not present, this, together with other factors, can eventually cause marriage disaster.- EzineArticles Submission - Submit Your Best Quality Original Articles For Massive Exposure, Ezine Publishers Get 25 Free Article Reprints 18 September 2009 11:52 UTC ezinearticles.com [Source type: General]
^ The quantum efficiency of thin film solar cells is also lower due to reduced number of collected charge carriers per incident photon.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ External quantum efficiency is the fraction of incident photons that are converted to electrical current, while internal quantum efficiency is the fraction of absorbed photons that are converted to electrical current.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Selenium allows for better uniformity across the layer and so the number of recombination sites in the film are reduced which benefits the quantum efficiency and thus the conversion efficiency.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ A solar module's energy conversion efficiency, (or just efficiency) is the ratio of the maximum output electrical power divided by the input light power under "standard" test conditions.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ See also claims that solar pv makes another step forward , with theoretic possibilities up beyond 60% efficiency.- Photovoltaics (solar cells) - briefing document 28 January 2010 0:52 UTC www.abelard.org [Source type: FILTERED WITH BAYES]
^ A solar module's energy conversion efficiency, (or just efficiency) is the ratio of the maximum output electrical power divided by the input light power under "standard" test conditions.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Photovoltaic cells, which are those black squares that make up a solar panel, are getting more efficient and less expensive.
Thermodynamic efficiency limit
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ When a photon is absorbed, its energy is given to an electron in the crystal lattice.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Generates heat, OR Generates electron-hole pairs, if the photon energy is higher than the silicon band gap value.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ In PhotoVoltaic or Charge integrating light detectors, the amount of electrical energy is related to the amount of photons converted to charges = Quantum Efficiency.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
^ Review Today?s commercial solar cells only convert 15% of the sun?s radiant energy into electricity.- Solar Cells - Shop Smarter.com 28 January 2010 0:52 UTC www.smarter.com [Source type: General]
^ The energy given to it by the photon "excites" it into the conduction band, where it is free to move around within the semiconductor.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ In PhotoVoltaic or Charge integrating light detectors, the amount of electrical energy is related to the amount of photons converted to charges = Quantum Efficiency.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
^ These higher energy photons will be absorbed by the solar cell, but the difference in energy between these photons and the silicon band gap is converted into heat (via lattice vibrations - called phonons) rather than into usable electrical energy.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ However, this new product can also convert light in the infrared and ultraviolet spectrums, making its effective energy conversion greater.- Solar cells with 63% efficiency by 2020 – Computer Chips & Hardware Technology | Geek.com 28 January 2010 0:52 UTC www.geek.com [Source type: General]
.^ Mounted at the focal point is either a Stirling Engine, which converts heat to mechanical energy, which then turns a turbine, or, less often, a photovoltaic panel.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
^ The balance of the solar energy is converted into heat, which is removed by water flowing in a channel behind the solar cells.- Establishment and Platform for an E-government System and its Security 11 September 2009 6:16 UTC www.tomw.net.au [Source type: FILTERED WITH BAYES]
^ They are not converting the IR energy into heat like a black object would, they are converting it directly into energy electricity.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ This type of cell achieves a higher efficiency by capturing more of the solar spectrum.- Photovoltaics (solar cells) - briefing document 28 January 2010 0:52 UTC www.abelard.org [Source type: FILTERED WITH BAYES]
^ Various materials have been investigated for solar cells.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ The barrier may include UV stabilizers and/or UV absorbing luminescent chromophores (which emit at higher wavelengths) and antioxidants to protect and improve the efficiency of the cell.
^ To be 80% efficient solar cells, it MUST capture, convert, and be able to produce power form more than just the IR spectrum of AM1.5.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
^ Where you will see solar cells in in homes on buildings where space is limited, thus efficiency is important if this is the final use.- Solar cells with 63% efficiency by 2020 – Computer Chips & Hardware Technology | Geek.com 28 January 2010 0:52 UTC www.geek.com [Source type: General]
[23]
Quantum efficiency
As described above, when a photon is absorbed by a solar cell it can produce a pair of free charge carriers, i.e. an electron-hole pair. One of the carriers (the minority carrier) may then be able to reach the p-n junction and contribute to the current produced by the solar cell; such a carrier is said to be
collected.
.^ These are called heterojunction solar cells.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ This electron-hole pair may then travel to the surface of the solar cell and contribute to the current produced by the cell; such a carrier is said to be collected .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Alternatively, the carrier may give up its energy and once again become bound to an atom within the solar cell without reaching the surface; this is called recombination , and carriers that recombine do not contribute to the production of electrical current.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ This electron-hole pair may then travel to the surface of the solar cell and contribute to the current produced by the cell; such a carrier is said to be collected .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Alternatively, the carrier may give up its energy and once again become bound to an atom within the solar cell without reaching the surface; this is called recombination , and carriers that recombine do not contribute to the production of electrical current.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ A P-N junction W can be used to collect the electrons and holes, generating an electrical potential that allows a current to flow.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ External quantum efficiency is the fraction of incident photons that are converted to electrical current, while internal quantum efficiency is the fraction of absorbed photons that are converted to electrical current.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Quantum efficiency refers to the percentage of absorbed photons that produce electron-hole pairs (or charge carriers ).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The cells convert solar energy into direct current electricity .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ External quantum efficiency is the fraction of incident photons that are converted to electrical current, while internal quantum efficiency is the fraction of absorbed photons that are converted to electrical current.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Quantum efficiency refers to the percentage of photons that are converted to electric current (i.e., collected carriers).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ In PhotoVoltaic or Charge integrating light detectors, the amount of electrical energy is related to the amount of photons converted to charges = Quantum Efficiency.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
.^ This term should not be confused with energy conversion efficiency , as it does not convey information about the power collected from the solar cell.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The layers are highly flexible, well-adhered, and can be used directly after appropriate annealing in efficient dye-sensitized solar cells.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
^ Why not compare most efficient in the world solar cell to the most efficient in the world car?- DailyTech - Record Setting Photovoltaic Cell is 40.8 Percent Efficient 20 November 2009 21:021 UTC www.dailytech.com [Source type: General]
.^ This condition approximately represents solar noon near the spring and autumn equinoxes in the continental United States with surface of the cell aimed directly at the sun.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Presently, high-efficiency crystalline silicon (c-Si) cell concepts are driving the design of next-generation equipment tooling for production lines in the solar industry.- solar cell cutting on Coherent inc. 28 January 2010 0:52 UTC lasers.coherent.com [Source type: Reference]
^ It is more practical than solar panels, will save 40% gas therefore reduce the carbon footprint, get rid of complex hunky-chunky gasoline engines.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
.^ This term should not be confused with energy conversion efficiency , as it does not convey information about the power collected from the solar cell.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Energy conversion efficiency .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The cells convert solar energy into direct current electricity .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Furthermore, quantum efficiency is most usefully expressed as a spectral measurement (that is, as a function of photon wavelength or energy).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ In PhotoVoltaic or Charge integrating light detectors, the amount of electrical energy is related to the amount of photons converted to charges = Quantum Efficiency.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
^ Since some wavelengths are absorbed more effectively than others in most semiconductors, spectral measurements of quantum efficiency can yield information about which parts of a particular solar cell design are most in need of improvement.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Furthermore, quantum efficiency is most usefully expressed as a spectral measurement (that is, as a function of photon wavelength or energy).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Since some wavelengths are absorbed more effectively than others in most semiconductors, spectral measurements of quantum efficiency can yield information about which parts of a particular solar cell design are most in need of improvement.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The barrier may include UV stabilizers and/or UV absorbing luminescent chromophores (which emit at higher wavelengths) and antioxidants to protect and improve the efficiency of the cell.
Maximum-power point
.^ A solar cell may operate over a wide range of voltages (V) and currents (I).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ C. and can be incorporated into flexible solar cells that are substantially non-transparent in the visible range.
^ The cells convert solar energy into direct current electricity .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ By increasing the resistive load on an irradiated cell continuously from zero (a short circuit ) to a very high value (an open circuit ) one can determine the maximum-power point, the point that maximizes V×I, that is, the load for which the cell can deliver maximum electrical power at that level of irradiation.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ By increasing the resistive load on an irradiated cell from zero (a short circuit ) to a very high value (an open circuit ) one can determine the maximum-power point, that is the maximum output electrical power that the cell can deliver at that level of irradiation.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Maximum-power point .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Over a daily cycle, the maximum power output is attained when the sun is at its highest and, of course, falls to zero between dusk and dawn.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ By increasing the resistive load on an irradiated cell continuously from zero (a short circuit ) to a very high value (an open circuit ) one can determine the maximum-power point, the point that maximizes V×I, that is, the load for which the cell can deliver maximum electrical power at that level of irradiation.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Interestingly, a solar cell or module can be shorted or left open circuited indefinitely without being damaged.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
.^ W/m² solar reference spectrum AM ( airmass ) 1.5 cell temperature 25 °C .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Equivalent circuit of a solar cell .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon solar cell device manufacture .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Solar output is reduced on cloudy days, but diffuse sunlight can still produce a useful fraction of full output.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ By reducing the material required per cell, the overall cost is reduced compared to first generation devices.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Sunlight contains photons with energies that reflect the sun’s surface temperature; in energy units of electron volts.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
.^ This is the ratio of the maximum power point divided by the open circuit voltage ( V oc ) and the short circuit current ( I sc ): .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ In order to enhance the efficiency of generation of electricity, it is important to lower the connecting resistivity between the cells and hence inhibit the drop cf the internal voltage.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
^ The maximum current that can be drawn from a solar cell, the short-circuit current, is about 300 amperes per square meter in strong sun.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
.^ This is the ratio of the maximum power point divided by the open circuit voltage ( V oc ) and the short circuit current ( I sc ): .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ For maximum power, a silicon cell should be operated at about 0.45 V (in full sun) and 90% of the short-circuit current.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ Vmp --Voltage at maximum power .- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
This output can be up to 70% of the
VOC x ISC product.
.^ This is the ratio of the maximum power point divided by the open circuit voltage ( V oc ) and the short circuit current ( I sc ): .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ In this tandem cell the short-circuit current exceeds that of the current-limiting subcell.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
^ A solar cell may operate over a wide range of voltages (V) and currents (I).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ As more current is drawn from the cell by the load, the voltage falls.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ However, the stringent requirements for cleanliness and quality control of semiconductor fabrication are a little more relaxed for solar cells.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ To be 80% efficient solar cells, it MUST capture, convert, and be able to produce power form more than just the IR spectrum of AM1.5.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
.^ This is the ratio of the maximum power point divided by the open circuit voltage ( V oc ) and the short circuit current ( I sc ): .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Dunno what to think of a claim of 70% efficiency in harnessing the sun's power...surely if those professors could only achieve 42%...- FuturePundit: New Solar Photovoltaic Cell Efficiency Record: 42.8% 28 January 2010 0:52 UTC www.futurepundit.com [Source type: FILTERED WITH BAYES]
.^ Skylab is powered by solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Review Today?s commercial solar cells only convert 15% of the sun?s radiant energy into electricity.- Solar Cells - Shop Smarter.com 28 January 2010 0:52 UTC www.smarter.com [Source type: General]
^ The power rating of a solar cell is expressed in watts, as either as peak watt (Wp), which is a measure of maximum possible performance under ideal conditions, or under more real-life conditions including normal operating cell temperature and AMPM (whole day rather than peak sunshine) standard ratings.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
.^ The maximum power point of a photovoltaic varies with incident illumination.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Maximum-power point .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ (PV) conversion efficiency --The ratio of the electric power produced by a photovoltaic device to the power of the sunlight incident on the device.- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
.^ For systems large enough to justify the extra expense, a maximum power point tracker tracks the instantaneous power by continually measuring the voltage and current (and hence, power transfer), and uses this information to dynamically adjust the load so the maximum power is always transferred, regardless of the variation in lighting.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The maximum power point of a photovoltaic varies with incident illumination.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Maximum-power point .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
Fill factor
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Another defining term in the overall behavior of a solar cell is the fill factor ( FF ).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Photovoltaic Cells Solar Decathlon Winner Announced The third Solar Decathlon ended on October 19, with a team from Germany winning the overall competition.
This is the ratio of the
maximum power point divided by the
open circuit voltage (
Voc) and the
short circuit current (
Isc):
.^ An ideal solar cell may be modelled by a current source in parallel with a diode ; in practice no solar cell is ideal, so a shunt resistance and a series resistance component are added to the model.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ One of the most important properties of a solar cell is its series resistance.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
^ A new method is presented to image quantitatively series resistance and dark saturation current density on silicon solar cells.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The barrier may include UV stabilizers and/or UV absorbing luminescent chromophores (which emit at higher wavelengths) and antioxidants to protect and improve the efficiency of the cell.
^ Since photovoltaic cells give their highest output when pointed directly at the sun, electrical performance can be optimized by putting them on a moving mount that is always pointed toward the sun.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
[16]
Comparison of energy conversion efficiencies
Main article:
Photovoltaics.^ Energy conversion efficiency .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Machinery for producing electric power .- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Efficiency is a ratio of the electric power output to the light power input.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ Since photovoltaic cells give their highest output when pointed directly at the sun, electrical performance can be optimized by putting them on a moving mount that is always pointed toward the sun.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ His invention involved placing an image on a cylinder and scanning it with a powerful light beam that had a photoelectric cell which could convert light, or the absence of light, into transmittable electrical impulses.- Buy Discount Fax Machine toner cartridges | thermal ribbon film roll | Coupon code promo HP efax 25 September 2009 7:27 UTC www.fleege.com [Source type: General]
^ The EPT of a panel is dependent on many factors such as manufacturing process, the panel efficiency, the amount of carbon in the electricity mix where the panel is manufactured, the geographical location of where the panel is operating along with many other factors.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ This term is calculated using the ratio of the maximum power point, P m , divided by the input light irradiance ( E , in W/m²) under standard test conditions (STC) and the surface area of the solar cell ( A c in m²).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The maximum power point of a photovoltaic varies with incident illumination.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ W/m² solar reference spectrum AM ( airmass ) 1.5 cell temperature 25 °C .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Thus, a typical 1 m solar panel in direct sunlight will produce approximately 120 watts of peak power.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Since solar cell output power depends on multiple factors, such as the sun 's incidence angle , for comparison purposes between different cells and panels, the peak watt (Wp) is used.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Since solar cell output power depends on multiple factors, such as the sun 's incidence angle , for comparison purposes between different cells and panels, the measure of watts peak (Wp) is used.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
The same standard is used for measuring the power and efficiency of PV modules,
.^ Hence, the "standard" solar radiation (known as the "air mass 1.5 spectrum") has a power density of 1000 watts per square meter .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Simply, the filtering effect ranges from Air Mass 0 in space, to approximately Air Mass 1.5 on earth.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The "standard" solar radiation (known as the "air mass 1.5 spectrum") has a power density of 1000 watts per square metre.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ In space, where there is no atmosphere, the spectrum of the sun is relatively unfiltered.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ So while there are electrons pouring out of the nano-antennas when exposed to the sun, there is no way to capture those electrons.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
.^ Light filter changing block 12.- http://www.gulflink.osd.mil/declassdocs/dia/19961031/961031_ln179-95_1.html 25 September 2009 7:27 UTC www.gulflink.osd.mil [Source type: Reference]
^ However on earth, with air filtering the incoming light, the solar spectrum changes.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Light filter change block 29.- http://www.gulflink.osd.mil/declassdocs/dia/19961031/961031_ln179-95_1.html 25 September 2009 7:27 UTC www.gulflink.osd.mil [Source type: Reference]
.^ To account for the spectral differences, a system was devised to calculate this filtering effect.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ That is, accounting practices with regard to capitalization of certain items may differ across companies, and therefore this figure in FRS (Financial Reporting System) will be a function of each reporting company's policy.- Dictionary of Energy - definisions - Energy Glossary - P 20 November 2009 21:021 UTC www.photius.com [Source type: Reference]
^ Following the initial discovery of the PV effect, scientists experimented with different materials in an attempt to find a practical use for PV systems.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
.^ Simply, the filtering effect ranges from Air Mass 0 in space, to approximately Air Mass 1.5 on earth.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ For example, a Silicon solar cell in space might have an efficiency of 14% at AM0, but have an efficiency of 16% on earth at AM 1.5.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ However on earth, with air filtering the incoming light, the solar spectrum changes.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ What are the different types of solar cells?- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Silicon solar cell device manufacture .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Some of the most efficient solar cell materials are cadmium telluride (CdTe) and copper indium gallium selenide (CIGS).- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ Thin film solar cells are typically less efficient than crystalline silicon solar cells.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
^ Hoffman Electronics creates a 14% efficient solar cell.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ For example, a Silicon solar cell in space might have an efficiency of 14% at AM0, but have an efficiency of 16% on earth at AM 1.5.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Solar cell efficiencies vary from 6% for amorphous silicon-based solar cells to 42.8% with multiple-junction research lab cells.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Highest Achieved Efficiency (Lab cells) .- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
[24] .^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The cell exhibited a solar conversion efficiency of about 3%.
^ Energy conversion efficiency .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
[25] .^ This process produces a material without crystalline orientation : amorphous silicon.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ For example, solar electricity (in the form of photovoltaics) is about 7 times the wholesale cost of utility scale wind power, but only about 2-3 times the cost of retail electricity. .- Solar Primer 28 January 2010 0:52 UTC www.nmsea.org [Source type: FILTERED WITH BAYES]
^ These cells have about 6% efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ However, there is a way to "boost" solar power.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ There are currently three principal types of concentrating solar energy systems : trough systems, dish/engine systems and power towers.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
^ Solar Energy Conservation: Solar Power Teach kids friendly ways to save the earth.
.^ By increasing the light intensity, typically photogenerated carriers are increased, resulting in increased efficiency by up to 15%.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ A typical concentrator system may use a light intensity 6-400 times the sun, and increase the efficiency of a one sun GaAs cell from 31% at AM 1.5 to 35%.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The increase in intensity is typically accomplished by using concentrating optics.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ These are called heterojunction solar cells.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ These cells have about 6% efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ While these films can achieve 11% efficiency, their costs are still too high.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ The increase in intensity is typically accomplished by using concentrating optics.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Additionally, increasing the concentration ratio improves the performance of general photovoltaic materials [27] and also allows for the use of high-performance materials such as gallium arsenide .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Additionally, increasing the concentration ratio improves the performance of general photovoltaic materials and also allows for the use of high-performance materials such as gallium arsenide .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ By increasing the light intensity, typically photogenerated carriers are increased, resulting in increased efficiency by up to 15%.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ A typical concentrator system may use a light intensity 6-400 times the sun, and increase the efficiency of a one sun GaAs cell from 31% at AM 1.5 to 35%.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The increase in intensity is typically accomplished by using concentrating optics.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Solar power is in rapid growth mode; new manufacturers and installers of photovoltaic solar cell systems are cropping up everywhere.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
^ This engine is later used in the dish/Stirling system, a solar thermal electric technology that concentrates the sun's thermal energy to produce electric power.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
^ I dont see many sucessful ventures of solar cells for commercial power use taking off because other proven technologies have proven to have a greater efficiency.- Solar cells with 63% efficiency by 2020 – Computer Chips & Hardware Technology | Geek.com 28 January 2010 0:52 UTC www.geek.com [Source type: General]
.^ A common method used to express economic costs of electricity-generating systems is to calculate a price per delivered kilowatt-hour (kWh).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ PV systems , calculating the cost of photovoltaic systems .- Solar Primer 28 January 2010 0:52 UTC www.nmsea.org [Source type: FILTERED WITH BAYES]
^ At this level, and assuming that whole system costs fall at a similar rate, solar electricity will be competitive with centralized, fossil-fuel generating systems and will be used on a large scale both by utility corporations and by individuals who own rooftop arrays.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
.^ Generally speaking, solar cells can be expected to last over 20 years.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The solar cell efficiency in combination with the available irradiation has a major influence on the costs, but generally speaking the overall system efficiency is important.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Western Electric licences commercial solar cell technologies.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The best cells made have an efficiency of 19%.- Artemis Project: Lunar Production of Solar Cells 28 January 2010 0:52 UTC www.asi.org [Source type: Academic]
^ The following chart shows solar-efficiencies for several of the leading-edge solar cell technologies.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
.^ Photovoltaic cells, sometimes called solar cells, can convert light, such as sunlight, into electrical energy.
^ The installation , to be completed by 2010 , will comprise over a million solar electrical panels , which should generate about 40 MW under optimum conditions .- A New Solar Cell 28 January 2010 0:52 UTC www.chemexplore.net [Source type: FILTERED WITH BAYES]
^ Today, advanced solar-energy systems provide electricity to pump water, power communications equipment and increasingly generate electricity on a commercial scale.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
.^ This electricity is generally fed into the electrical grid on the customer's side of the meter.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ By installing a solar array, users can generate electricity for their personal use or for distribution on a connected electrical grid.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ In order to enhance the efficiency of generation of electricity, it is most important to take light beam into the module without any loss.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
.^ The cost can be compared to prevailing retail electric pricing (as of 2005), which varied from between 0.04 and 0.50 US$/kWh worldwide.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ A common method used to express economic costs of electricity-generating systems is to calculate a price per delivered kilowatt-hour (kWh).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ As of 2005, photovoltaic electricity generation costs ranged from ~ 50 eurocents/kWh (0.60 US$/kWh) (central Europe) down to ~ 25 eurocents/kWh (0.30 US$/kWh) in regions of high solar irradiation.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ PV systems , calculating the cost of photovoltaic systems .- Solar Primer 28 January 2010 0:52 UTC www.nmsea.org [Source type: FILTERED WITH BAYES]
^ Solar cells should have a useful life of at least 10 years.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ (Note: in addition to solar irradiance profiles, these costs/kwh calculations will vary depending on assumptions for years of useful life of a system.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Most c-Si panels are warrantied for 25 years and should see 35+ years of useful life.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Solar cells should have a useful life of at least 10 years.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ However, effective module lives are typically 25 years or more [5] , so replacement costs should be considered as well.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
)
Solar cells and energy payback
.^ Polycrystalline silicon has lower conversion efficiency but also lower cost.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ In the 1990s, when silicon cells were twice as thick, efficiencies were 30% lower than today and lifetimes were shorter, it may well have cost more energy to make a cell than it could generate in a lifetime.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Solar energy has shown great progress and new advancements are making solar cells more efficient than ever.
.^ The energy payback time of a modern photovoltaic module is anywhere from 1 to 20 years (usually under five) [12] depending on the type and where it is used (see net energy gain ).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The energy payback time (EPT) of a technology is commonly defined by the following equation: .- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Point-of-use solar energy would generate the exact amount of energy any one individual needs, at the location where it is needed.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
.^ Energy conversion efficiency .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Comparison of energy conversion efficiencies .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ What does "energy conversion efficiency" mean?- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
[27] With a typical lifetime of 20 to 30 years, this means that modern solar cells are net energy producers, i.e. they generate significantly more energy over their lifetime than the energy expended in producing them.
[11][28][29]
Light-absorbing materials
.^ Structures and materials for photovoltaic cell .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Four generations of solar cells .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Cadmium telluride is an efficient light-absorbing material for thin-film solar cells.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Cadmium telluride is an efficient light-absorbing material for thin-film solar cells.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The materials used in solar cells tend to have the property of preferentially absorbing the wavelengths of solar light that reach the earth surface; however, some solar cells are optimized for light absorption beyond Earth's atmosphere as well.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ It uses material from Wikipedia Encyclopedia article "Solar Cell" .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ The materials used in solar cells tend to have the property of preferentially absorbing the wavelengths of solar light that reach the earth surface; however, some solar cells are optimized for light absorption beyond Earth's atmosphere as well.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Some of the most efficient solar cell materials are cadmium telluride (CdTe) and copper indium gallium selenide (CIGS).- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ However, the stringent requirements for cleanliness and quality control of semiconductor fabrication are a little more relaxed for solar cells.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Light absorbing materials can often be used in multiple physical configurations to take advantage of different light absorption and charge separation mechanisms (listed in alphabetical order).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Light-absorbing materials .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Light absorbing materials can often be used in multiple physical configurations to take advantage of different light absorption and charge separation mechanisms.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
Photovoltaic panels are normally made of either silicon or thin-film cells:
.^ Until recently most solar cells were made from single crystal silicon wafers.- Original:Understanding Solar Cells - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: Reference]
^ Solar cells have many applications.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Many currently available solar cells are configured as bulk materials that are subsequently cut into wafers and treated in a "top-down" method of synthesis (silicon being the most prevalent bulk material).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Thin film approaches are module based.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ The second generation photovoltaic materials is based on the use of thin-film deposits of semiconductors.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Material for a functional layer of an organic electronic component, method for the production thereof, and use thereof .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
.^ Thin film approaches are module based.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Also called thin film.- Big Frog Mountain- Solar Electric Glossary Of Terminology Used In Renewable Or Alternative Energy Systems 28 January 2010 0:52 UTC bigfrogmountain.com [Source type: Reference]
^ Silicon remains the only material that is well-researched in both bulk and thin-film configurations.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
Bulk
.^ These bulk technologies are often referred to as wafer-based manufacturing.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These technologies are wafer based manufacturing.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Typically, the efficiencies of thin-film solar cells are lower compared to bulk silicon (=wafer-based) solar cells, but manufacturing costs are also lower, so that a lower price in terms of $/watt of electrical output can be achieved.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ In other words, in each of the above approaches, self supporting wafers of ~300 micrometres thick are fabricated and then soldered together to form a module.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ In other words, in each of these approaches, self-supporting wafers between 180 to 240 micrometers thick are processed and then soldered together to form a solar cell module.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon wafer based solar cells .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
Crystalline silicon
Basic structure of a silicon based solar cell and its working mechanism.
.^ Crystalline silicon solar cells typically use silicon or polysilicon substrates.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
^ Crystalline silicon solar cells come in three primary categories: .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Crystalline silicon and gallium arsenide are typical choices of materials for solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Si): often made using the Czochralski process .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Tempered glass cannot be used with amorphous silicon cells because of the high temperatures during the deposition process.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These cells are typically made using silicon wafer.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Single-crystal wafer cells tend to be expensive, and because they are cut from cylindrical ingots, do not completely cover a square solar cell module without a substantial waste of refined silicon.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon solar cell device manufacture .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon wafer based solar cells .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Poly- or multicrystalline silicon (poly-Si or mc-Si): made from cast square ingots - large blocks of molten silicon carefully cooled and solidified.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Poly- or multicrystalline silicon (poly-Si or mc-Si): made from cast square ingots — large blocks of molten silicon carefully cooled and solidified.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Most solar cells are made from silicon, which is the primary component of sand.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ Thin film solar cells are typically less efficient than crystalline silicon solar cells.- Solar Energy - a knol by William Pentland 28 January 2010 0:52 UTC knol.google.com [Source type: FILTERED WITH BAYES]
^ These cells are less expensive to produce than single crystal cells but are less efficient.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The solar cells made from these materials tend to have lower energy conversion efficiency than bulk silicon, but are also less expensive to produce.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Ribbon silicon : formed by drawing flat thin films from molten silicon and having a multicrystalline structure.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Common thin-film technologies include amorphous silicon, cadium telluride, and copper indium gallium selenide.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Silicon thin-films are mainly deposited by chemical vapor deposition (typically plasma-enhanced (PE-CVD)) from silane gas and hydrogen gas.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
These cells have lower efficiencies than poly-Si, but save on production costs due to a great reduction in silicon waste, as this approach does not require
sawing from
ingots.
Thin films
.^ This contributed to a prediction of greatly reduced costs for thin film solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Solar Cells Thin Film Solar Cells Are the Wave of the Future Recent developments in solar cell technology have revolutionized the solar cell market.
^ This is a term intrinsic to the light absorbing material , and not the cell as a whole (which becomes more relevant for thin-film solar cells).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Polycrystalline silicon has lower conversion efficiency but also lower cost.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Thin layer energy system .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Thin-film processing .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Polycrystalline silicon has lower conversion efficiency but also lower cost.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ However, manufacturing costs of CIS solar cells at present are high when compared with amorphous silicon solar cells but continuing work is leading to more cost-effective production processes.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
Cadmium telluride solar cell
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ This is a term intrinsic to the light absorbing material , and not the cell as a whole (which becomes more relevant for thin-film solar cells).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Thin film approaches are module based.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ Compared to other thin-film materials, CdTe is easier to deposit and more suitable for large-scale production.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon thin-films are mainly deposited by chemical vapor deposition (typically plasma-enhanced (PE-CVD)) from silane gas and hydrogen gas.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Another interesting aspect of thin-film solar cells is the possibility to deposit the cells on all kind of materials, including flexible substrates (PET for example), which opens a new dimension for new applications.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ There are many types of solar cell.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Silicon wafer based solar cells .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Some of the most efficient solar cell materials are cadmium telluride (CdTe) and copper indium gallium selenide (CIGS).- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ The perception of the toxicity of CdTe is based on the toxicity of elemental cadmium , a heavy metal that is a cumulative poison .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Plutonium (Pu): A heavy, fissionable, radioactive, metallic element (atomic number 94) that occurs naturally in trace amounts.- Dictionary of Energy - definisions - Energy Glossary - P 20 November 2009 21:021 UTC www.photius.com [Source type: Reference]
.^ The perception of the toxicity of CdTe is based on the toxicity of elemental cadmium , a heavy metal that is a cumulative poison .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Peaking capacity: Capacity of generating equipment normally reserved for operation during the hours of highest daily, weekly, or seasonal loads.- Dictionary of Energy - definisions - Energy Glossary - P 20 November 2009 21:021 UTC www.photius.com [Source type: Reference]
^ Despite much discussion of the toxicity of CdTe-based solar cells, this is the only technology (apart from amorphous silicon) that can be delivered on a large scale, as shown by First Solar and Antec Solar.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
[31] .^ Some of the most efficient solar cell materials are cadmium telluride (CdTe) and copper indium gallium selenide (CIGS).- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ While other cells are made from thin films of metal (such as CdTe, CIGS and IGN) these metals are safely contained within the cell and do not pose health risks [12] .- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Charles Fritts develops a solar cell using selenium on a thin layer of gold to form a device giving less than 1% efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
[31]
Copper-Indium Selenide
Possible combinations of (I, III, VI) elements in the periodic table that have photovoltaic effect
|
.^ I III VI elements in the periodic table that has photovoltaic effect .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The materials based on CuInSe 2 that are of interest for photovoltaic applications include several elements from groups I, III and VI in the periodic table.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Possible combinations of I III VI elements in the periodic table that have photovoltaic effect .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Solar cells have many applications.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Thin-film solar cells .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ These semiconductors are especially attractive for thin film solar cell application because of their high optical absorption coefficients and versatile optical and electrical characteristics which can in principle be manipulated and tuned for a specific need in a given device.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ The abbreviation stands for copper indium gallium selenide .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ CIS is an abbreviation for general chalcopyrite films of copper indium selenide ( C u I n S e 2 ), CIGS mentioned below is a variation of CIS. CIS films (no Ga) achieved greater than 14% efficiency.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Common thin-film technologies include amorphous silicon, cadium telluride, and copper indium gallium selenide.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ However, manufacturing costs of CIS solar cells at present are high when compared with amorphous silicon solar cells but continuing work is leading to more cost-effective production processes.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Silicon solar cell device manufacture .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ CIS is an abbreviation for general chalcopyrite films of copper indium selenide ( C u I n S e 2 ), CIGS mentioned above is a variation of CIS. While these films can achieve 13.5% efficiency, their manufacturing costs at present are high when comparing to silicon solar cell but continuing work is leading to more cost-effective production processes.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ CSG Solar expects to release its first product for sale in 2006.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Furthermore, embodiments of the present invention are compatible with roll-to-roll manufacturing of photovoltaic cells and modules that can be readily scaled up to high production volumes.- SOLUTION-BASED FABRICATION OF PHOTOVOLTAIC CELL - Patents 20 November 2009 21:021 UTC www.faqs.org [Source type: Reference]
^ Our company was established in 2006 with registered capital of 12 million RMB. The output of our first solar module production line is 25MW, and our workshop...- Solar cell Suppliers, Solar cell Factories, Solar cell Manufacturers - European Business Directory, European Trade Portal, Europe B2B Marketplace 28 January 2010 0:52 UTC europe.bloombiz.com [Source type: General]
.^ Methods to make nanoparticles of the desired materials having the desired narrow particle size distribution include controlling the reaction conditions under which the nanoparticles are made or using size-selective precipitation and other techniques (such as ultrafiltration and membrane emulsification).- SOLUTION-BASED FABRICATION OF PHOTOVOLTAIC CELL - Patents 20 November 2009 21:021 UTC www.faqs.org [Source type: Reference]
^ But while microprocessor producers can use design and manufacturing techniques to improve chip efficiency and performance, improvements to solar cells means changing materials.- First there was Moore's Law; now, 'Gore's Law'? 28 January 2010 0:52 UTC www.computerworld.com [Source type: News]
^ The second generation of photovoltaic materials is based on the use of thin epitaxial deposits of semiconductors on lattice-matched wafers.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Triple junction solar cell have (as the name suggest) 3 diodes layered on top of each other, each absorbing a different spectrum of light, efficiency as high as 28% have been achieved.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Then the thin multispectrum layers can be stacked to make multispectrum solar cells more efficient and cheaper based on polymer solar cell and multijunction technology used by NASA on Mars missions.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ The abbreviation stands for copper indium gallium selenide .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ When gallium is substituted for some of the indium in CIS, the material is sometimes called CIGS , or copper indium/gallium diselenide , a solid mixture of the semiconductors CuInSe 2 and CuGaSe 2 , often abbreviated by the chemical formula CuIn x Ga (1-x) Se 2 .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Common thin-film technologies include amorphous silicon, cadium telluride, and copper indium gallium selenide.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ Unlike the basic silicon solar cell, which can be modelled as a simple p-n junction (see under semiconductor), these cells are best described by a more complex heterojunction model.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Silicon solar cell device manufacture .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Unlike conventional solar cells, the new, cheap material has no rigid silicon base..."- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ Thin-film solar cells .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ CIGS are multi-layered thin-film composites.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Cadmium telluride is an efficient light-absorbing material for thin-film solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
[33] .^ This allows more light to be concentrated on the solar cell, improving the efficiency of solar cells.- First there was Moore's Law; now, 'Gore's Law'? 28 January 2010 0:52 UTC www.computerworld.com [Source type: News]
^ The best efficiency of a thin-film solar cell as of December 2005 was 19.5% with CIGS. Higher efficiencies (around 30%) can be obtained by using optics to concentrate the incident light.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ With light concentrators, the highest record cell is a multi-junction cell that has a measured 40.8% efficiency.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ The use of gallium increases the optical bandgap of the CIGS layer as compared to pure CIS, thus increasing the open-circuit voltage.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ For the current state-of-the-art dye-sensitized solar cell , the loss-in-potential from the optical bandgap to the open-circuit voltage is 0.75 eV. This results in a maximum efficiency of 13.4% with an absorption onset at 840 nm.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
^ This will help particles fuse together much easier thus enhancing the cohesion of the resulting CIGS layer (W. H. Qi, et al.- SOLUTION-BASED FABRICATION OF PHOTOVOLTAIC CELL - Patents 20 November 2009 21:021 UTC www.faqs.org [Source type: Reference]
.^ In another point of view, gallium is added to replace as much indium as possible due to gallium's relative availability to indium.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ For example, an ink may be made starting with a molten mixture of Gallium and/or Indium (commercially available, e.g., from Alfa Aesar of Ward Hill, Mass.- SOLUTION-BASED FABRICATION OF PHOTOVOLTAIC CELL - Patents 20 November 2009 21:021 UTC www.faqs.org [Source type: Reference]
.^ Approximately 70% of Indium currently produced is used by the flat-screen monitor industry.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Approximately 70% [18] of indium currently produced is used by the flat-screen monitor industry.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ These conductive films are also used in the LCD industry for flat panel displays.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ However, the stringent requirements for cleanliness and quality control of semiconductor fabrication are a little more relaxed for solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This term should not be confused with energy conversion efficiency , as it does not convey information about the power collected from the solar cell.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Individual solar cells provide a relatively small amount of power, but electrical output can be significant when cells are connected together in a PV module.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Some investors in solar technology worry that production of CIGS cells will be limited by the availability of indium.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The dye-sensitized solar cell depends on a mesoporous layer of nanoparticulate titanium dioxide to greatly amplify the surface area (200-300 m²/gram TiO 2 , as compared to approximately 10 m²/gram of flat single crystal).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
Producing 2 GW of CIGS cells (roughly the amount of silicon cells produced in 2006) would use about 10% of the indium produced in 2004.
[35] For comparison, silicon solar cells used up 33% of the world's electronic grade silicon production in 2006.
.^ Selenium allows for better uniformity across the layer and so the number of recombination sites in the film are reduced which benefits the quantum efficiency and thus the conversion efficiency.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ An advantage of thin-film technology theoretically results in reduced mass so it allows fitting panels on light or flexible materials, even textiles.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Although they are reduced in energy conversion efficiency from single crystalline Si wafers, they are also much easier to produce at comparably lower costs.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
[citation needed]
Gallium arsenide multijunction
.^ These cells have about 6% efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Their "thin-film" cousins have been developed using lower-cost processes, but have lower AM0 efficiencies (7-9%) in production and are questionable for space applications.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ These devices were initially designed to be high-efficiency, multiple junction photovoltaic cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ A triple-junction cell, for example, may consist of the semiconductors: GaAs , Ge , and GaInP 2 .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ A triple-junction cell, for example, may consist of the semiconductors: GaAs, Ge, and GaInP 2 .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Unlike the basic silicon solar cell, which can be modelled as a simple p-n junction (see under semiconductor ), these cells are best described by a more complex heterojunction model.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
[37] .^ Each type of semiconductor will have a characteristic band gap energy which, loosely speaking, causes it to absorb light most efficiently at a certain color, or more precisely, to absorb electromagnetic radiation over a portion of the spectrum.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The band gap of the p-type compound semiconductor to be used in the invention is preferably 2 eV or more, more preferably 2.5 eV or more.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
^ In PhotoVoltaic or Charge integrating light detectors, the amount of electrical energy is related to the amount of photons converted to charges = Quantum Efficiency.- 80% Efficient Solar Panel?! Works at Night?! 28 January 2010 0:52 UTC www.ecogeek.org [Source type: FILTERED WITH BAYES]
.^ The semiconductors are carefully chosen to absorb nearly all of the solar spectrum, thus generating electricity from as much of the solar energy as possible.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Point-of-use solar energy would generate the exact amount of energy any one individual needs, at the location where it is needed.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
^ Solar electricity has long been recognized as a potential energy source that holds great promise.- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www3.interscience.wiley.com [Source type: Academic]
- Wiley InterScience :: Hot Topics :: Solar Cells 28 January 2010 0:52 UTC www.wiley.com [Source type: Academic]
.^ With light concentrators, the highest record cell is a multi-junction cell that has a measured 40.8% efficiency.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ This allows more light to be concentrated on the solar cell, improving the efficiency of solar cells.- First there was Moore's Law; now, 'Gore's Law'? 28 January 2010 0:52 UTC www.computerworld.com [Source type: News]
[38]
.^ This technology is being used right now on the Mars rover missions.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Current research is being conducted under a DARPA grant to determine if this technology is viable.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The various thin-film technologies currently being developed reduce the amount (or mass) of light absorbing material required in creating a solar cell .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Solar arrays made with a material which contains gallium arsenide GaAs and germanium Ge is seeing demand rapidly rise.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Gallium arsenide (GaAs) multijunction .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ A triple-junction cell, for example, may consist of the semiconductors: GaAs , Ge , and GaInP 2 .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ In just the past 12 months (12/2006 - 12/2007), the cost of 4N gallium metal has risen from about $350 per kg to $680 per kg.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Additionally, germanium metal prices have risen substantially to $1000-$1200 per kg this year.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Additionally, germanium metal prices have risen substantially to $1000-$1200 per kg this year.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Tempe, Ariz., has seen its per-share stock price rocket from about $25 two years ago toward Google -like highs.- First there was Moore's Law; now, 'Gore's Law'? 28 January 2010 0:52 UTC www.computerworld.com [Source type: News]
^ In just the past 12 months (12/2006 - 12/2007), the cost of 4N gallium metal has risen from about $350 per kg to $680 per kg.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Those materials include gallium (4N, 6N and 7N Ga), arsenic (4N, 6N and 7N) and germanium, pyrolitic boron nitride (pBN) crucibles for growing crystals, and boron oxide, these products are critical to the entire substrate manufacturing industry.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Other examples of compound semiconductor include phosphide of zinc, gallium, indium and cadmium, selenide of gallium-arsenic and copper-indium, and sulfide of copper-indium.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
^ Solar arrays made with a material which contains gallium arsenide GaAs and germanium Ge is seeing demand rapidly rise.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ But solar cells are just one aspect of the cost of solar power.- First there was Moore's Law; now, 'Gore's Law'? 28 January 2010 0:52 UTC www.computerworld.com [Source type: News]
^ Four generations of solar cells .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Skylab is powered by solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Thin-film solar cells .- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Thin film approaches are module based.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
^ Thin film cells are plated onto a plate of glass.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
[39]
Light-absorbing dyes (DSSC)
.^ Light-absorbing dyes .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Light-absorbing materials .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Light absorbing dyes .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Gel electrolytes for dye sensitized solar cells .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ The dye-sensitized solar cell depends on a mesoporous layer of nanoparticulate titanium dioxide to greatly amplify the surface area (200-300 m²/gram TiO 2 , as compared to approximately 10 m²/gram of flat single crystal).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Efficient Photoelectrochemical cells are developed; the Dye-sensitized solar cell is invented.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Light-absorbing dyes .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Electrons may pass from the n-type side into the p-type side, and holes may pass from the p-type side to the n-type side.- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Light absorbing dyes .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ The circuit is completed by a redox couple in the electrolyte, which can be liquid or solid.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ A p/n junction is used here too in the form of a doped solid (normally titanium dioxide) in contact with a solid or liquid electrolyte (for example CuI).- SOLAR CELL DEVELOPMENT AND PHOTOVOLTAIC PANELS OR ARRAYS FOR SALE CHEAP BARGAINS AMAZON BEST VALUE 28 January 2010 0:52 UTC www.speedace.info [Source type: FILTERED WITH BAYES]
.^ This type of cell allows a more flexible use of materials, and typically are manufactured by screen printing, with the potential for lower processing costs than those used for bulk solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This allows more light to be concentrated on the solar cell, improving the efficiency of solar cells.- First there was Moore's Law; now, 'Gore's Law'? 28 January 2010 0:52 UTC www.computerworld.com [Source type: News]
^ What are the different types of solar cells?- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ These solvents may be used in admixture.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
^ However, the dyes in these cells also suffer from degradation under heat and UV light, and the cell casing is difficult to seal due to the solvents used in assembly.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Unlike the basic silicon solar cell, which can be modelled as a simple p-n junction (see under semiconductor ), these cells are best described by a more complex heterojunction model.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ In spite of the above, this is a popular emerging technology with some commercial impact forecasted within this decade.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ In spite of the above, this is a popular emerging technology with some commercial impact forecast within this decade.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Our company was established in 2006 with registered capital of 12 million RMB. The output of our first solar module production line is 25MW, and our workshop...- Solar cell Suppliers, Solar cell Factories, Solar cell Manufacturers - European Business Directory, European Trade Portal, Europe B2B Marketplace 28 January 2010 0:52 UTC europe.bloombiz.com [Source type: General]
^ Currently, the world commercial production focuses on first generation solar cells, with a small, but expanding, portion of the market devoted to second generation technology.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ First generation photovoltaic cells (also known as silicon wafer-based solar cells) are the dominant technology in the commercial production of solar cells, accounting for more than 86% of the solar cell market.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
Organic/polymer solar cells
.^ Organic/polymer solar cells .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Organic solar cells and Polymer solar cells are built from thin films (typically 100 nm) of organic semiconductors such as polymers and small-molecule compounds like polyphenylene vinylene , copper phthalocyanine (a blue or green organic pigment) and carbon fullerenes .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Solar modules, the panels that comprise solar cells, have to be constructed with equipment such as batteries, inverters that convert DC into AC power and increasingly expensive metals, such as copper.- First there was Moore's Law; now, 'Gore's Law'? 28 January 2010 0:52 UTC www.computerworld.com [Source type: News]
.^ Energy conversion efficiency .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Comparison of energy conversion efficiencies .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Energy conversion efficiencies achieved to date using conductive polymers are low at 4-5% efficiency for the best cells to date.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Research is also being done in this area by the USA 's National Renewable Energy Laboratory .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ That being said many Life Cycle Analyses have been conducted on solar photovoltaic panels and a range of payback times have been determined, Alsema and Fthenakis found a range of EPT of 1-2.7 [8] years while the National Renewable Energy Laboratory NREL found EPTs ranging from 1-4 years.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ With light concentrators, the highest record cell is a multi-junction cell that has a measured 40.8% efficiency.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ However, these cells could be beneficial for some applications where mechanical flexibility and disposability are important.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Some of the highest efficiencies for solar cell electric power generation have been obtained by using this material, but previous applications have not yet caused demand to increase significantly.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ It is important to note that although performance will be reduced, your cells will continue to make some power!- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ As described above, when a photon is absorbed by a solar cell it is converted to an electron-hole pair.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Silicon solar cell device manufacture .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ What are the different types of solar cells?- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ The internal structure of the photoelectric conversion device can be roughly divided into two groups, i.e., structure allowing the entrance of light beam from the both surfaces thereof and structure allowing the entrance of light beam from one surface thereof.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
^ Fundamentally, the device needs to fulfill only two functions: photogeneration of charge carriers (electrons and holes) in a light-absorbing material, and separation of the charge carriers to a conductive contact that will transmit the electricity.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The photoelectric conversion device of item (2) above, wherein the positive hole-transporting material is at least one p-type compound semiconductor positive hole-transporting material.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
.^ As described above, when a photon is absorbed by a solar cell it is converted to an electron-hole pair.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Although the cost of producing solar cells has declined, their ability to convert sunlight into electricity remains low.- First there was Moore's Law; now, 'Gore's Law'? 28 January 2010 0:52 UTC www.computerworld.com [Source type: News]
^ The presence of a missing covalent bond allows the bonded electrons of neighboring atoms to move into the "hole," leaving another hole behind, and in this way a hole can move through the lattice.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ GaAs multijunction devices are the most efficient solar cells to date, reaching as high as 39% efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
Nanostructured interfaces, sometimes in the form of bulk heterojunctions, can improve performance.
[41]
Silicon thin films
.^ Silicon thin-films are mainly deposited by Chemical vapor deposition (typically plasma enhanced (PE-CVD)) from silane gas and hydrogen gas.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Organic solar cells and Polymer solar cells are built from thin films (typically 100 nm) of organic semiconductors such as polymers and small-molecule compounds like polyphenylene vinylene , copper phthalocyanine (a blue or green organic pigment) and carbon fullerenes .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Light trapping schemes where the incoming light is obliquely coupled into the silicon and the light traverses the film several times enhance the absorption of sunlight in the films.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
Depending on the deposition parameters, this can yield:
[42]
- Amorphous silicon (a-Si or a-Si:H)
- Protocrystalline silicon or
- Nanocrystalline silicon (nc-Si or nc-Si:H), also called microcrystalline silicon.
.^ This is the ratio of the maximum power point divided by the open circuit voltage ( V oc ) and the short circuit current ( I sc ): .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The use of gallium increases the optical bandgap of the CIGS layer as compared to pure CIS, thus increasing the open-circuit voltage.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ However, second generation technologies do not have the high efficiencies obtained by the pure crystalline silicon devices found in the first generation of solar technologies.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
[43] .^ These types of silicon present dangling and twisted bonds, which results in deep defects (energy levels in the bandgap) as well as deformation of the valence and conduction bands (band tails).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The energy given to it by the photon "excites" it into the conduction band , where it is free to move around within the semiconductor.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Generates heat, OR Generates electron-hole pairs, if the photon energy is higher than the silicon band gap value.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Polycrystalline silicon has lower conversion efficiency but also lower cost.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These cells are typically made using silicon wafer.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These cells have about 6% efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ This contributed to a prediction of greatly reduced costs for thin film solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ The quantum efficiency of thin film solar cells is also lower due to reduced number of collected charge carriers per incident photon.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Kingston has a higher solar flux than expected for this part of Canada.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Amorphous silicon has a higher bandgap (1.7 eV) than crystalline silicon (c-Si) (1.1 eV), which means it absorbs the visible part of the solar spectrum more strongly than the infrared portion of the spectrum.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The top cell in a-Si absorbs the visible light and leaves the infrared part of the spectrum for the bottom cell in nanocrystalline Si.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ As nc-Si has about the same bandgap as c-Si, the two material can be combined in thin layers, creating a layered cell called a tandem cell .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Charles Fritts develops a solar cell using selenium on a thin layer of gold to form a device giving less than 1% efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ The top cell in a-Si absorbs the visible light and leaves the infrared part of the spectrum for the bottom cell in nanocrystalline Si.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Main article: Dye-sensitized solar cells Typically a ruthenium metalorganic dye (Ru-centered) is used as a monolayer of light-absorbing material.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Multi-junction cells can be visuallized as several cells stacked on top of each other, with each cell optimized for a different part of the optical spectrum.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ Recently, solutions to overcome the limitations of thin-film crystalline silicon have been developed.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Recently, solutions to overcome the limitations of thin film crystalline silicon have been developed.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon thin-films are mainly deposited by chemical vapor deposition (typically plasma-enhanced (PE-CVD)) from silane gas and hydrogen gas.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Light trapping schemes where the incoming light is obliquely coupled into the silicon and the light traverses the film several times enhance the absorption of sunlight in the films.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Common thin-film technologies include amorphous silicon, cadium telluride, and copper indium gallium selenide.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Silicon thin-films are mainly deposited by chemical vapor deposition (typically plasma-enhanced (PE-CVD)) from silane gas and hydrogen gas.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
[44] .^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Thermal processing techniques enhance the crystallinity of the silicon and passify electronic defects.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Thermal processing techniques enhance the crystallinity of the silicon and pacify electronic defects.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
[45]
.^ A silicon thin film technology is being developed for building integrated photovoltaics (BIPV) in the form of semi-transparent solar cells which can be applied as window glazing.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ We specialize in R & D, Producing, selling of solar cells, solar panels, silicon-film solar cells and photovoltaic system.- Solar cell Suppliers, Solar cell Factories, Solar cell Manufacturers - European Business Directory, European Trade Portal, Europe B2B Marketplace 28 January 2010 0:52 UTC europe.bloombiz.com [Source type: General]
^ Silicon solar cell device manufacture .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ These cells function as window tinting while generating electricity.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Solar cells function by converting electromagnetic radiation (primarily light from the sun) into electrical energy.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Because the cells produce electricity that would otherwise be made by more polluting forms of power generation, use of solar cells can increase air quality.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
Nanocrystalline solar cells
.^ Cadmium telluride is an efficient light-absorbing material for thin-film solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Main article: Nanocrystal solar cell These structures make use of some of the same thin-film light absorbing materials but are overlain as an extremely thin absorber on a supporting matrix of conductive polymer or mesoporous metal oxide having a very high surface area to increase internal reflections (and hence increase the probability of light absorption).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These semiconductors are especially attractive for thin film solar cell application because of their high optical absorption coefficients and versatile optical and electrical characteristics which can in principle be manipulated and tuned for a specific need in a given device.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ A typical concentrator system may use a light intensity 6-400 times the sun, and increase the efficiency of a one sun GaAs cell from 31% at AM 1.5 to 35%.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ It is typically applied in a layer several hundred nanometers thick using plasma-enhanced chemical vapor deposition (PECVD).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These cells are typically made using a diffusion process with silicon wafers .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Silicon solar cell device manufacture .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ This condition approximately represents solar noon near the spring and autumn equinoxes in the continental United States with surface of the cell aimed directly at the sun.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
Schema of Concentrating photovoltaics
Concentrating photovoltaics (CPV)
.^ Concentrating photovoltaic systems use a large area of lenses or mirrors to focus sunlight on a small area of photovoltaic cells.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Flexible Photovoltaic cells, systems and methods .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Rotational photovoltaic cells, systems and methods .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
[46] .^ Light trapping schemes where the incoming light is obliquely coupled into the silicon and the light traverses the film several times enhance the absorption of sunlight in the films.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ If a piece of p-type silicon is placed in intimate contact with a piece of n-type silicon, then a diffusion of electrons occurs from the region of high electron concentration (the n-type side of the junction) into the region of low electron concentration (p-type side of the junction).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These cells use a single junction and have high efficiencies, but use a large amount of pure crystalline silicon, making the technology relatively expensive.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ NREL develops a GaInP/GaAs two-terminal concentrator cell (180 suns) which becomes the first solar cell to exceed 30% conversion efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ A typical concentrator system may use a light intensity 6-400 times the sun, and increase the efficiency of a one sun GaAs cell from 31% at AM 1.5 to 35%.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Using the commercially available solar cells (as of 2006) and system technology leads to system efficiencies between 5 and 19%.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Two or more kinds of semiconductor particles having different particle diameter distributions may be used in admixture.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
^ Concentrating photovoltaic systems use a large area of lenses or mirrors to focus sunlight on a small area of photovoltaic cells.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Charles Fritts develops a solar cell using selenium on a thin layer of gold to form a device giving less than 1% efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ The primary attraction of CPV systems is their reduced usage of semiconducting material which is expensive and currently in short supply.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The various thin-film technologies currently being developed reduce the amount (or mass) of light absorbing material required in creating a solar cell .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Additionally, increasing the concentration ratio improves the performance of general photovoltaic materials [27] and also allows for the use of high-performance materials such as gallium arsenide .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Additionally, increasing the concentration ratio improves the performance of general photovoltaic materials and also allows for the use of high-performance materials such as gallium arsenide .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ With light concentrators, the highest record cell is a multi-junction cell that has a measured 40.8% efficiency.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
[47] .^ Despite the advantages of CPV technologies their application has been limited by the costs of focusing, tracking and cooling equipment.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Steps for getting a solar power system .- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ This plant, at 154 MW, would be ten times larger than the largest current photovoltaic plant in the world.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ This plant, at 154 MW , would be ten times larger than the largest current photovoltaic plant in the world.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
[48]
Silicon solar cell device manufacture
Solar-powered scientific calculator
.^ Solar cells have many applications.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon solar cell device manufacture .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Because solar cells are semiconductor devices, they share many of the same processing and manufacturing techniques as other semiconductor devices such as computer and memory chips .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ However, the stringent requirements for cleanliness and quality control of semiconductor fabrication are a little more relaxed for solar cells.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Unlike the basic silicon solar cell, which can be modelled as a simple p-n junction (see under semiconductor ), these cells are best described by a more complex heterojunction model.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Hoffman Electronics-Semiconductor Division creates a 2% efficient commercial solar cell for $25/cell or $1,785/Watt.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Most solar cells are made from silicon, which is the primary component of sand.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Most large-scale commercial solar cell factories today make screen printed poly-crystalline silicon solar cells.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon solar cell device manufacture .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Solar cell efficiency factors .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ These cells are typically made using silicon wafer.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Four generations of solar cells .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Poly-crystalline silicon wafers are made by wire-sawing block-cast silicon ingots into very thin (180 to 350 micrometer) slices or wafers.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ During the manufacturing process, crystalline silicon ingots are sliced into wafer -thin disks, polished to remove slicing damage, dopants are introduced into the soup, and metallic conductors are deposited onto each surface: a thin grid on the sun-facing side and usually a flat sheet on the other.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ The wafers are usually lightly p-type doped.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ To make a solar cell from the wafer, a surface diffusion of n-type dopants is performed on the front side of the wafer.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ What are the different types of solar cells?- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Silicon wafer based solar cells .- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ This forms a p-n junction a few hundred nanometers below the surface.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Antireflection coatings, which increase the amount of light coupled into the solar cell, are typically applied next.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Some solar cells have textured front surfaces that, like antireflection coatings, serve to increase the amount of light coupled into the cell.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Main article: Dye-sensitized solar cells Typically a ruthenium metalorganic dye (Ru-centered) is used as a monolayer of light-absorbing material.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Over the past decade, silicon nitride has gradually replaced titanium dioxide as the antireflection coating of choice because of its excellent surface passivation qualities (i.e., it prevents carrier recombination at the surface of the solar cell).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon solar cell device manufacture .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon wafer based solar cells .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ It is typically applied in a layer several hundred nanometers thick using plasma-enhanced chemical vapor deposition (PECVD).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Silicon thin-films are mainly deposited by chemical vapor deposition (typically plasma-enhanced (PE-CVD)) from silane gas and hydrogen gas.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Semiconductor particles layer [0052] In order to apply the semiconductor particles to the electrically conductive support, a method may be used which comprises applying a dispersion or colloid solution of semiconductor particles to an electrically conductive support.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
.^ Second generation solar cells : In an effort to reduce the cost of solar cells, a second generation of photovoltaic devices was investigated and is characterized by devices using very small amounts of source material.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ We are Supplier and Seller of: solar street lamp, wind turbine, solar cell modules, led light, led tunnel light, solar warning light, wind-solar hybrid power supply, solar garden light, solar products.- Solar cell Suppliers, Solar cell Factories, Solar cell Manufacturers - European Business Directory, European Trade Portal, Europe B2B Marketplace 28 January 2010 0:52 UTC europe.bloombiz.com [Source type: General]
^ We are Supplier and Seller of: solar panel, solar cell , solar system, solar lights, solar home off-grid system, on grid solar system, solar power station, solar module, solar products.- Solar cell Suppliers, Solar cell Factories, Solar cell Manufacturers - European Business Directory, European Trade Portal, Europe B2B Marketplace 28 January 2010 0:52 UTC europe.bloombiz.com [Source type: General]
.^ Such surfaces can usually only be formed on single-crystal silicon, though in recent years methods of forming them on multicrystalline silicon have been developed.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ For example, single crystal silicon solar cells have largely been replaced by less expensive multicrystalline silicon solar cells, and thin film silicon solar cells have also been developed recently at lower costs of production yet (see Solar cell ).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ One way of doing this is to develop cheaper methods of obtaining silicon that is sufficiently pure.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ The rear contact is also formed by screen-printing a metal paste, typically aluminium.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The wafer is then metallized, whereby a full area metal contact is made on the back surface, and a grid-like metal contact made up of fine "fingers" and larger "busbars" is screen-printed onto the front surface using a silver paste.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ To make a solar cell from the wafer, a surface diffusion of n-type dopants is performed on the front side of the wafer.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ The rear contact is also formed by screen-printing a metal paste, typically aluminium.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Usually this contact covers the entire rear side of the cell, though in some cell designs it is printed in a grid pattern.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The paste is then fired at several hundred degrees Celsius to form metal electrodes in ohmic contact with the silicon.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
.^ Usually this contact covers the entire rear side of the cell, though in some cell designs it is printed in a grid pattern.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Ohmic metal -semiconductor contacts are made to both the n-type and p-type sides of the solar cell, and the electrodes connected to an external load.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The rear contact is also formed by screen-printing a metal paste, typically aluminium.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ The paste is then fired at several hundred degrees Celsius to form metal electrodes in ohmic contact with the silicon.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
^ Solid silica can be directly converted (reduced) to pure silicon by electrolysis in a molten salt bath at a fairly mild temperature (800 to 900 degrees Celsius).- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Ohmic metal -semiconductor contacts are made to both the n-type and p-type sides of the solar cell, and the electrodes connected to an external load.- Solar Cell Projects & Experiments for Lesson Plans & Science Fair Projects 28 January 2010 0:52 UTC www.juliantrubin.com [Source type: Academic]
- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Graetzel, EPFL, Laussane, Switzerland achieves 11% efficient energy conversion with dye-sensitized cells that use a photoelectrochemical effect.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Because the cells produce electricity that would otherwise be made by more polluting forms of power generation, use of solar cells can increase air quality.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Charles Fritts develops a solar cell using selenium on a thin layer of gold to form a device giving less than 1% efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Solar panels have a sheet of tempered glass on the front, and a polymer encapsulation on the back.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Solar cells are often electrically connected and encapsulated as a module .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Each photovoltaic (PV) module is made of multiple interconnected solar cells .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Tempered glass cannot be used with amorphous silicon cells because of the high temperatures during the deposition process.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ First generation solar cells : The photovoltaic industry began around crystalline silicon and the first solar cells made using pure crystalline silicon are commonly referred to as first generation.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
Miniaturization
.^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This contributed to a prediction of greatly reduced costs for thin film solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ We are Supplier and Seller of: solar panel, solar cell , solar system, solar lights, solar home off-grid system, on grid solar system, solar power station, solar module, solar products.- Solar cell Suppliers, Solar cell Factories, Solar cell Manufacturers - European Business Directory, European Trade Portal, Europe B2B Marketplace 28 January 2010 0:52 UTC europe.bloombiz.com [Source type: General]
LROGC03 type panel is going to have a surface of 41 x 33 millimetres, half the size of the first LROGC02 panel.
[49]
Tiny
glitter-sized photovoltaic cells (from 14 to 20
micrometers thick) could have intelligent controls,
inverters and even storage built in at the chip level.
.^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Tempered glass cannot be used with amorphous silicon cells because of the high temperatures during the deposition process.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Solar Photovoltaic panels, on the other hand, use the sun’s light to produce electricity which can then be used for all sorts of applications.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ Typical solar panels have an average efficiency of 12%, with the best commercially available panels at 20%.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Solar cell energy conversion efficiencies for commercially available mc-Si solar cells are around 14-16%.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ PV warranties typically allow for 20 percent output degradation over the module’s 20- to 25-year warranty life.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
[50]Lifespan
.^ Western Electric licences commercial solar cell technologies.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Does the efficiency of a solar cell decrease over time?- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ This term should not be confused with energy conversion efficiency , as it does not convey information about the power collected from the solar cell.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ However, effective module lives are typically 25 years or more [5] , so replacement costs should be considered as well.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Manufacturers of these proven technologies are now comfortable offering warranties of 25 years or more.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ It is safe to say that modules carrying warranties of 20 years or more have a high probability of working well 30 years from now.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
[citation needed]
Costs
.^ A common method used to express economic costs of electricity-generating systems is to calculate a price per delivered kilowatt-hour (kWh).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ By reducing the material required per cell, the overall cost is reduced compared to first generation devices.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Third generation solar cells : The third generation of photovoltaics aims to achieve the high efficiencies of the first generation and the low cost of the second generation devices.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
Slicing costs
.^ What are the different types of solar cells?- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Skylab is powered by solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon wafer based solar cells .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ CVD and PVD or mechanical methods such as laser scribing, plasma CVM (as described in "Solar Energy Materials and Solar Cells", 48, pp.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
^ By reducing the material required per cell, the overall cost is reduced compared to first generation devices.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ This contributed to a prediction of greatly reduced costs for thin film solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
[51]
Low-cost solar cell
.^ Efficient Photoelectrochemical cells are developed; the Dye-sensitized solar cell is invented.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Main article: Dye-sensitized solar cells .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The dye-sensitized solar cell depends on a mesoporous layer of nanoparticulate titanium dioxide to greatly amplify the surface area (200-300 m²/gram TiO 2 , as compared to approximately 10 m²/gram of flat single crystal).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ What are the different types of solar cells?- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ U.S. Patent 4,927,721 disclosed a photoelectric conversion device and solar cell comprising semiconductor particles sensitized with a dye, materials from which such a photoelectric conversion device is prepared, and a production technique for producing such a photoelectric conversion device.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
^ CVD and PVD or mechanical methods such as laser scribing, plasma CVM (as described in "Solar Energy Materials and Solar Cells", 48, pp.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
.^ Charles Fritts develops a solar cell using selenium on a thin layer of gold to form a device giving less than 1% efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Photovoltaic cells, which are those black squares that make up a solar panel, are getting more efficient and less expensive.
^ The solar cells made from these materials tend to have lower energy conversion efficiency than bulk silicon, but are also less expensive to produce.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
It can be engineered into flexible sheets.
.^ This arrangement gives a structure allowing the external supply of electricity thus generated.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
^ The electrical conductivity of the positive hole-transporting layer of the invention is preferably from 10 <-8> S/cm to less than 10 <2> S/cm, more preferably from 10 <-6> S/cm to less than 10 S/cm.- JP Patent 2001168359 - PHOTOELECTRIC TRANSFER ELEMENT AND PHOTOELECTRIC CELL 25 September 2009 7:27 UTC www.wikipatents.com [Source type: Reference]
^ Solar energy has shown great progress and new advancements are making solar cells more efficient than ever.
Current research on materials and devices
.^ University of Washington Pumping Water with Solar Power Photovoltaic solar energy is used for the extraction of water in places where there is no normal electricity.
^ While there are many types of solar cells available, most of the current photovoltaic technologies are fully recycleable.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Third generation solar cells are currently found mainly in research labs and universities.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ Solar energy has shown great progress and new advancements are making solar cells more efficient than ever.
^ Space Exploration Tech Advances, More Manufacturers to Bring Cheaper Solar Power A new assessment released today predicts a larger, cheaper market for solar power in coming years.
^ Energy Consumption Department of Energy Announces $5.2 Million Solar Power Project The Department of Energy announced additional funding for research into advanced methods and materials for developing Concentrated Solar Power as an economically and commercially viable renewable energy technology.
Silicon processing
.^ However, second generation technologies do not have the high efficiencies obtained by the pure crystalline silicon devices found in the first generation of solar technologies.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Another way to reduce the cost (payback) is to consider a commercial model for the panels as electric power generators.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Are there discounts or other ways to reduce the cost of my system?- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ Silicon is a very common element, but is normally bound in silica, or silica sand .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Hydrogen Power Printable, Paintable Solar Cells Could Provide Energy, Research Indicates Researchers at the New Jersey Institute of Technology have developed a carbon-based solar cell that uses nanomaterials, particles approaching the size of molecules, to capture energy and generate electricity from the sun.
^ The simultaneous use of all detector functions make this detector very useful but, the real advantage of the trifunctional detector is that it allows the analyst a choice of the three most useful detector function in one detecting system.
^ Alternative Power Solar Energy as Alternative Energy Solar energy is becoming more practical with every passing year.
.^ Solar Oven Introduction to Solar Energy A short article designed to help familiarize the reader with the commonly encountered terms surrounding solar energy.
^ Alternative Power Solar Energy as Alternative Energy Solar energy is becoming more practical with every passing year.
^ More Energy The Pros and Cons of Solar Energy Have your electric and heating bills been killing you?
.^ Alternating Current Solar Power Alternatives to Save Homeowners Money Solar Power is a clean, alternative energy source that does not produce any greenhouse gas emissions.
^ First generation solar cells : The photovoltaic industry began around crystalline silicon and the first solar cells made using pure crystalline silicon are commonly referred to as first generation.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
Solid silica can be directly converted (reduced) to pure silicon by electrolysis in a molten salt bath at a fairly mild temperature (800 to 900 °C).
[52][53] .^ Hydrogen Power Printable, Paintable Solar Cells Could Provide Energy, Research Indicates Researchers at the New Jersey Institute of Technology have developed a carbon-based solar cell that uses nanomaterials, particles approaching the size of molecules, to capture energy and generate electricity from the sun.
^ Gel electrolytes for dye sensitized solar cells .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Solar energy has shown great progress and new advancements are making solar cells more efficient than ever.
.^ Second generation solar cells : In an effort to reduce the cost of solar cells, a second generation of photovoltaic devices was investigated and is characterized by devices using very small amounts of source material.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ LCD or window pane having controllable transparency, has active layer between two electrodes enclosed by covering layer .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Independence from utility companies can either reduce/eliminate utility costs or serve as another income stream to the household.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
[54] .^ A number of different chemical processes can be used to recycle the silicon in the photovoltiac cells into pure silicon wafers.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
These slices are rotated 90 degrees, so that the surfaces corresponding to the faces of the original wafer become the edges of the slivers.
.^ A number of different chemical processes can be used to recycle the silicon in the photovoltiac cells into pure silicon wafers.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ For example, if a solar array has an overall efficiency of 10% and an exposed area of 1 square meter, the expected electrical power output would be 10 watts if the incident light irradiance W was 1000 watts per square meter.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ The sensor cell usually consists of a cylindrical cavity about 1 mm I.D and a few mm long, having a capacity that ranges from about two micro-liters to eight micro-liters.
.^ To make a solar cell from the wafer, a surface diffusion of n-type dopants is performed on the front side of the wafer.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ In practice, p-n junctions of silicon solar cells are not made in this way, but rather, by diffusing an n-type dopant into one side of a p-type wafer (or vice versa).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These higher energy photons will be absorbed by the solar cell, but the difference in energy between these photons and the silicon band gap is converted into heat (via lattice vibrations - called phonons ) rather than into usable electrical energy.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
This has the interesting effect of making the cell sensitive from both the front and rear of the cell (a property known as bifaciality).
[54] .^ A number of different chemical processes can be used to recycle the silicon in the photovoltiac cells into pure silicon wafers.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Off-grid refers to systems that are not connected to the utility electrical grid; all power generated by the panels is either stored or used by the building they are fixed to.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Solar Panels Going Green with Solar Panels One area in which we would probably all like to participate is in the use of solar panels to produce domestic solar power.
Thin-film processing
.^ Photovoltaic Cells Solar Decathlon Winner Announced The third Solar Decathlon ended on October 19, with a team from Germany winning the overall competition.
^ Info Photovoltaic Cells This article gives a general overview of photovoltaic cells for the benefit of people not in the feild and then goes on to discuss triple junction solar cells, light concentration techniques, quantum dots, carbon nanotubules, and dye sensitized and thin film cells.
^ Common thin-film technologies include amorphous silicon, cadium telluride, and copper indium gallium selenide.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ For other photovoltaic technologies, such as Group-III thin film technologies, the material components can still be recovered but the recycling technolgies are not as well established as silicon-based photovoltaic recycling.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Second generation photovoltaics are commonly called 'thin-film' solar cells, due to the small amount of material required as compared to first generation technology.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ However, second generation technologies do not have the high efficiencies obtained by the pure crystalline silicon devices found in the first generation of solar technologies.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
[55]
.^ One particularly promising technology is crystalline silicon thin films on glass substrates.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The result is a new technology - thin film Crystaline Silicon on Glass (CSG) [3] .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This contributed to a prediction of greatly reduced costs for thin film solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ One particularly promising technology is crystalline silicon thin films on glass substrates.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
[56][57]
.^ While other cells are made from thin films of metal (such as CdTe, CIGS and IGN) these metals are safely contained within the cell and do not pose health risks [12] .- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Solar energy has shown great progress and new advancements are making solar cells more efficient than ever.
^ For other photovoltaic technologies, such as Group-III thin film technologies, the material components can still be recovered but the recycling technolgies are not as well established as silicon-based photovoltaic recycling.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
[58]
Metamorphic multijunction solar cell
.^ The cells convert solar energy into direct current electricity .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Are solar and renewable energies are a good investment?- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ That being said many Life Cycle Analyses have been conducted on solar photovoltaic panels and a range of payback times have been determined, Alsema and Fthenakis found a range of EPT of 1-2.7 [8] years while the National Renewable Energy Laboratory NREL found EPTs ranging from 1-4 years.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
[59]
.^ With light concentrators, the highest record cell is a multi-junction cell that has a measured 40.8% efficiency.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Third generation solar cells : The third generation of photovoltaics aims to achieve the high efficiencies of the first generation and the low cost of the second generation devices.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Solar cells function by converting electromagnetic radiation (primarily light from the sun) into electrical energy.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
[60] of
Albuquerque, N.M., in partnership with the
Air Force Research Laboratories Space Vehicles Directorate at
Kirtland Air Force Base in Albuquerque.
.^ Energy Cost New York Solar and Fuel Cell Tax Credit New York offers a state income tax credit of 25% of the cost of a solar photovoltaic or solar thermal system up to a maximum credit of $5,000, and 20% of the cost of a fuel cell up to $1,500.
^ Third generation solar cells : The third generation of photovoltaics aims to achieve the high efficiencies of the first generation and the low cost of the second generation devices.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Solar energy has shown great progress and new advancements are making solar cells more efficient than ever.
.^ Structures and materials for photovoltaic cell .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Structures and materials for dye sensitized solar cells .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ STRUCTURES AND MATERIALS FOR DYE SENSITIZED SOLAR CELLS .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
Their performance and cost effectiveness is constrained by growing the cells in an upright configuration. Meanwhile, the cells are rigid, heavy and thick with a bottom layer made of
germanium.
In the new method, the cell is grown upside down.
.^ These semiconductors are especially attractive for thin film solar cell application because of their high optical absorption coefficients and versatile optical and electrical characteristics which can in principle be manipulated and tuned for a specific need in a given device.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This term should not be confused with energy conversion efficiency , as it does not convey information about the power collected from the solar cell.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
Not all of the layers follow the
lattice pattern of even atomic spacing.
.^ Alternatively a broad band light source can be used and the light after passing through the cell can be optically dispersed by prism or grating and allowed to fall onto a diode array.
The thick, rigid germanium
layer is removed, reducing the cell's cost and 94% of its weight.
.^ With light concentrators, the highest record cell is a multi-junction cell that has a measured 40.8% efficiency.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Solar cells function by converting electromagnetic radiation (primarily light from the sun) into electrical energy.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Third generation solar cells : The third generation of photovoltaics aims to achieve the high efficiencies of the first generation and the low cost of the second generation devices.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
Polymer processing
.^ The invention of conductive polymers (for which Alan Heeger , Alan G. MacDiarmid and Hideki Shirakawa were awarded a Nobel prize ) may lead to the development of much cheaper cells that are based on inexpensive plastics.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Energy conversion efficiencies achieved to date using conductive polymers are low at 4-5% efficiency for the best cells to date.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Generally speaking, solar cells can be expected to last over 20 years.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ First generation solar cells : The photovoltaic industry began around crystalline silicon and the first solar cells made using pure crystalline silicon are commonly referred to as first generation.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Second generation solar cells : In an effort to reduce the cost of solar cells, a second generation of photovoltaic devices was investigated and is characterized by devices using very small amounts of source material.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
The bonds in the polymers, are always susceptible to breaking up when radiated with shorter wavelengths.
.^ Many (but not all) substances absorb light in this wavelength range, including those substances having one or more double bonds (p electrons) and substances having unshared (unbonded) electrons, e.g.
So most conductive polymers, being highly unsaturated and reactive, are highly sensitive to atmospheric moisture and oxidation, making commercial applications difficult.
Nanoparticle processing
.^ Recycling of solar panels is economically attractive as most of the raw silicon processing steps can be bypassed when using recycled materials.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ The majority of commerical solar cells are primarily made of silicon, which can be fully recovered.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Most solar cells are made from silicon, which is the primary component of sand.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
carbon nanotubes or
quantum dots, embedded in
conductive polymers or mesoporous metal oxides.
.^ Solar cells have many applications.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These cells have about 6% efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ In addition, thin films of many of these materials on conventional silicon solar cells can increase the optical coupling efficiency into the silicon cell, thus boosting the overal efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ By varying the size of the quantum dots, the cells can be tuned to absorb different wavelengths.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The various thin-film technologies currently being developed reduce the amount (or mass) of light absorbing material required in creating a solar cell .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Energy conversion efficiency .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Although the research is still in its infancy, quantum dot -modified photovoltaics may be able to achieve up to 42 percent energy conversion efficiency due to multiple exciton generation.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Comparison of energy conversion efficiencies .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
[61]
Transparent conductors
.^ Solar cells have many applications.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Solar cells have gone on to be used in many applications.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Many new solar cells use transparent thin films that are also conductors of electrical charge.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These conductive films are also used in the LCD industry for flat panel displays.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The Institute of Energy Conversion at University of Delaware develops the first thin-film solar cell exceeding 10% efficiency using Cu2S/CdS technology.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ These conductive films are also used in the LCD industry for flat panel displays.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Approximately 70% of Indium currently produced is used by the flat-screen monitor industry.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ These multijunction cells consist of multiple thin films produced using molecular beam epitaxy .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Photogeneration of charge carriers .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The dual function of a TCO allows light to pass through a substrate window to the active light absorbing material beneath, and also serves as an ohmic contact to transport photogenerated charge carriers away from that light absorbing material.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Fundamentally, the device needs to fulfill only two functions: photogeneration of charge carriers (electrons and holes) in a light-absorbing material, and separation of the charge carriers to a conductive contact that will transmit the electricity.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ The present TCO materials are effective for research, but perhaps are not yet optimized for large-scale photovoltaic production.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Compared to other thin-film materials, CdTe is easier to deposit and more suitable for large-scale production.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Second generation photovoltaics are commonly called 'thin-film' solar cells, due to the small amount of material required as compared to first generation technology.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ Manufacturers of these proven technologies are now comfortable offering warranties of 25 years or more.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ These cells use a single junction and have high efficiencies, but use a large amount of pure crystalline silicon, making the technology relatively expensive.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
.^ Hydrogen Power Printable, Paintable Solar Cells Could Provide Energy, Research Indicates Researchers at the New Jersey Institute of Technology have developed a carbon-based solar cell that uses nanomaterials, particles approaching the size of molecules, to capture energy and generate electricity from the sun.
^ As well, new advances into dye-sensitized and organic/polymer photovoltaics are emerging technologies.- Solar Photovoltaic Cells for the Kingston Home FAQ - Appropedia: The sustainability wiki 28 January 2010 0:52 UTC www.appropedia.org [Source type: FILTERED WITH BAYES]
^ Solar energy has shown great progress and new advancements are making solar cells more efficient than ever.
.^ Nanotube networks are flexible and can be deposited on surfaces a variety of ways.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ With some treatment, nanotube films can be highly transparent in the infrared, possibly enabling efficient low bandgap solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This term should not be confused with energy conversion efficiency , as it does not convey information about the power collected from the solar cell.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Nanotube networks are p-type conductors, whereas traditional transparent conductors are exclusively n-type.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ A relatively new area has emerged using carbon nanotube networks as a transparent conductor for organic solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The availability of a p-type transparent conductor could lead to new cell designs that simplify manufacturing and improve efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ The availability of a p-type transparent conductor could lead to new cell designs that simplify manufacturing and improve efficiency.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ New Structures : These new compounds are special arrangements of silicon that can dramatically improve efficiency such as ormosil Thin films .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The New York Times forecasts that solar cells will eventually lead to a source of "limitless energy of the sun".- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
Silicon wafer-based solar cells
.^ These cells are typically made using silicon wafer.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Structures and materials for photovoltaic cell .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Reflective solar concentrators are first used with solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ This means that most solar cell manufacturers are equipped to produce these type of solar cells.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon solar cell device manufacture .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ To make a solar cell from the wafer, a surface diffusion of n-type dopants is performed on the front side of the wafer.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ In addition, upon Substantial Completion of each Phase, Contractor shall assign to Solar Star all related manufacturer' s and/or supplier' s warranties for the applicable Phase.
^ Solar energy has shown great progress and new advancements are making solar cells more efficient than ever.
^ Solar Solar Energy Gaining Ground New advances in solar panel efficiency and tax breaks increasing solar power plant construction.
.^ Solar A Great Source of Alternative Energy: Solar Power The sun is a great source of energy.
^ A solar panel is a good source of alternative energy for home use.
^ The cells convert solar energy into direct current electricity .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ This term should not be confused with energy conversion efficiency , as it does not convey information about the power collected from the solar cell.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ A common method used to express economic costs of electricity-generating systems is to calculate a price per delivered kilowatt-hour (kWh).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
[62] .^ This technology makes use of the advantages of crystalline silicon as a solar cell material, with the cost savings of using a thin-film approach.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ By far, the most prevalent bulk material for solar cells is crystalline silicon (abbreviated as a group as c-Si ), also known as "solar grade silicon".- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon solar cell device manufacture .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
.^ Silicon solar cell device manufacture .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ A general description of silicon wafer processing is provided in Manufacture and Devices .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ Silicon wafer based solar cells .- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
The new process was recently awarded the “2007 Most Valuable Pollution Prevention Award” from The National Pollution Prevention Roundtable (NPPR).
[63]
Infrared solar cells
.^ President George H. W. Bush directs the U.S. Department of Energy to establish the National Renewable Energy Laboratory (transferring the existing Solar Energy Research Institute).- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
^ The National Renewable Energy Laboratory's Solar Energy Research Facility is established.- PowerPedia:Solar cell - PESWiki 28 January 2010 0:52 UTC peswiki.com [Source type: Academic]
[64] in
.^ Solar A Great Source of Alternative Energy: Solar Power The sun is a great source of energy.
^ Solar power, like the two other major environmentally friendly energy alternatives rely on ideal conditions and plenty of sunshine.
^ They use Photovoltaic cells or solar panels located inside the lights to store energy from the sun, collected in the daytime hours, which is later used a no cost source of lighting at night.
.^ Energy Consumption Department of Energy Announces $5.2 Million Solar Power Project The Department of Energy announced additional funding for research into advanced methods and materials for developing Concentrated Solar Power as an economically and commercially viable renewable energy technology.
^ Solar Oven How Solar Power Works Solar power converts solar energy into electricity using photovoltaic and solar thermal technology.
^ Energy Crisis Wind Power: The Cutting Edge Alternative Energy Wind power is 2007's cutting edge of alternative energy compared to the cutting edge technology of 2006, solar power.
.^ Solar-powered cars can't get here too soon for me.
^ Solar Lights Solar Tower: Ancient Technology Becomes a Modern Power Option At more than 550 ft high, it is an imposing glass-like tower surrounded with acres of thick transparent sheeting .
^ Hydrogen Power Printable, Paintable Solar Cells Could Provide Energy, Research Indicates Researchers at the New Jersey Institute of Technology have developed a carbon-based solar cell that uses nanomaterials, particles approaching the size of molecules, to capture energy and generate electricity from the sun.
.^ Manufacturers How to Have a Solar-Heated House Without Solar Panels Learn about passive solar home design, which keeps your house cool in the summer and warm in the winter without the need of electricity or even solar panels.
^ Photovoltaic Cells How to Have a Solar-Heated House Without Solar Panels Learn about passive solar home design, which keeps your house cool in the summer and warm in the winter without the need of electricity or even solar panels.
.^ Coal is a battery for Sun and Earth energy.
^ Sustainable Energy The Energy Transit Spectrum Wind power originally comes from the Sun.
^ Solar Radiation Maine Incentives for Energy Conservation and Renewable Energy Systems Maine offers a rebate program for the installation of a solar photovoltaic or solar thermal heating system at your residence.
In contrast, traditional solar cells can only use visible light, rendering them idle after dark.
UV solar cells
.^ Solar Lights How to Choose a Solar Energy System for Your Home Solar energy has the potential to save you thousands of dollars on your electric bill.
^ Photovoltaic Cells Going Green with Solar Panels One area in which we would probably all like to participate is in the use of solar panels to produce domestic solar power.
^ The solar pumps are used as a primary source of energy to sunlight, which through an array of photovoltaic, transforms light into electricity.
.^ Solar Lights How to Choose a Solar Energy System for Your Home Solar energy has the potential to save you thousands of dollars on your electric bill.
^ Photovoltaic Cells Going Green with Solar Panels One area in which we would probably all like to participate is in the use of solar panels to produce domestic solar power.
^ The solar pumps are used as a primary source of energy to sunlight, which through an array of photovoltaic, transforms light into electricity.
In contrast, the innovative new solar cell uses ultraviolet radiation.
.^ Christmas Lighting Power Wave: Ocean Supplies Alternative Energy Wave energy conversion can be used to generate electricity, safely replacing our need for toxic fossil fuels and dangerous nuclear power plants, while reducing millions of pounds of greenhouse gas emissions.
^ Photovoltaic Solar Security Lighting Basics Solar powered security lighting has several advantages over wired lighting systems.
.^ Methods of scoring for fabricating interconnected photovoltaic cells .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ WIRE INTERCONNECTS FOR FABRICATING INTERCONNECTED PHOTOVOLTAIC CELLS .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
[65]
3D solar cells
.^ Flexible Photovoltaic cells, systems and methods .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Rotational photovoltaic cells, systems and methods .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Photovoltaic Cells Solar Decathlon Winner Announced The third Solar Decathlon ended on October 19, with a team from Germany winning the overall competition.
.^ Solar Panels 5 Simple Solar Powered Gadgets Worth Looking At With solar power so much in the news, here are five great uses for solar power you can use now.
^ Solar energy has shown great progress and new advancements are making solar cells more efficient than ever.
^ Photovoltaic Cells Going Green with Solar Panels One area in which we would probably all like to participate is in the use of solar panels to produce domestic solar power.
[66]
Metamaterials
Main article:
MetamaterialMetamaterials are heterogeneous materials employing the juxtaposition of many microscopic elements, giving rise to properties not seen in ordinary solids. Using these, it is possible to fashion solar cells that are
perfect absorbers over a narrow range of wavelengths.
[67][68]Photovoltaic thermal hybrid
.^ Flexible Photovoltaic cells, systems and methods .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Rotational photovoltaic cells, systems and methods .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Loans are also offered for solar photovoltaic and solar water heating systems.
[69]
Validation, certification and manufacturers
.^ Solar Oven Renewable Energy: 10 Things to Know What is renewable energy (RE)?
^ Solar The Future of U.S. Renewable Energy Policy Holding back further use of hydropower has been the lack of an efficient, inexpensive, and environmentally friendly device to extract energy from water.
^ Energy Consumption Department of Energy Announces $5.2 Million Solar Power Project The Department of Energy announced additional funding for research into advanced methods and materials for developing Concentrated Solar Power as an economically and commercially viable renewable energy technology.
There are three reliable certifications of solar equipment:
UL and
IEEE (both U.S. standards) and
IEC.
Solar cells are manufactured primarily in Japan, Germany, Mainland China, Taiwan and United States,
[70] though numerous other nations have or are acquiring significant solar cell production capacity. While technologies are constantly evolving toward higher efficiencies, the most effective cells for low cost electrical production are not necessarily those with the highest efficiency, but those with a balance between low-cost production and efficiency high enough to minimize area-related balance of systems cost. Those companies with large scale manufacturing technology for coating inexpensive substrates may, in fact, ultimately be the lowest cost net electricity producers, even with cell efficiencies that are lower than those of
single-crystal technologies.
China
Backed by Chinese government's unprecedented plan to offer subsidies for utility-scale solar power projects that is likely to spark a new round of investment from Chinese solar panel makers. Chinese companies have already played a more important role in solar panels manufacturing in recent years.
.^ Ultrasonic slitting of photovoltaic cells and modules .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ Flexible photovoltaic cells and modules formed using foils .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
^ SOLAR CELL MODULE .- CA Patent 2456213 - TRANSPARENT FLAT BODY 20 November 2009 21:021 UTC www.wikipatents.com [Source type: Academic]
[71] .^ If reasonably requested by Solar Star, Contractor shall, at Contactor' s sole cost and expense, provide Solar Star reasonable assistance in obtaining such subsidies, rebates or incentives.
^ MEMC Electronic / SUNTECH POWER HOLDINGS CO., LTD - Solar Wafer Supply Agreement, Dated As of July 25, 2006 .
[72] The new development of solar module manufacturers with thin-film technology such as
Veeco and
Anwell Technologies Limited will further help to boost the domestic solar industry.
[73][74]United States
New manufacturing facilities for solar cells and modules in Massachusetts, Michigan, New York, Ohio, Oregon, and Texas promise to add enough capacity to produce thousands of megawatts of
solar devices per year within the next few years from 2008.
[75]In late September 2008,
Sanyo Electric Company, Ltd. announced its decision to build a manufacturing plant for solar
ingots and
wafers in Salem, Oregon. The plant will begin operating in October 2009 and will reach its full production capacity of 70 megawatts (MW) of
solar wafers per year by April 2010.
In early October 2008, First Solar, Inc. broke ground on an expansion of its
Perrysburg, Ohio, facility that will add enough capacity to produce another 57 MW per year of solar modules at the facility, bringing its total capacity to roughly 192 MW per year. The company expects to complete construction early next year and reach full production by mid-2010.
In mid-October 2008,
SolarWorld AG opened a manufacturing plant in
Hillsboro, Oregon, that is expected to produce 500 MW of solar cells per year when it reaches full production in 2011.
In March 2010, SpectraWatt, Inc. began production at its manufacturing plant in
Hopewell Junction, NY, which is expected to produce 120 MW of solar cells per year when it reaches full production in 2011.
See also
References
- ^ Alfred Smee (1849). Elements of Electro-Biology, or The Voltaic Mechanism of Man; of Electro-Pathology, Especially of the Nervous System.... London: Longman, Brown, Green, and Longmans. http://books.google.com/books?id=CU0EAAAAQAAJ&pg=PA15.
- ^ "Light sensitive device" U.S. Patent 2,402,662
- ^ N. Gupta, G. F. Alapatt, R. Podila, R. Singh, K.F. Poole, (2009). "Prospects of Nanostructure-Based Solar Cells for Manufacturing Future Generations of Photovoltaic Modules". International Journal of Photoenergy 2009. doi:10.1155/2009/154059.
- ^ "UD-led team sets solar cell record, joins DuPont on $100 million project". http://www.udel.edu/PR/UDaily/2008/jul/solar072307.html.
- ^ "World Record: 41.1% efficiency reached for multi-junction solar cells at Fraunhofer ISE". http://www.ise.fraunhofer.de/press-and-media/pdfs-zu-presseinfos-englisch/2009/press-release-world-record-41.1-efficiency-reached-for-multi-junction-solar-cells-at-fraunhofer-ise-pdf-file.
- ^ "NREL Solar Cell Sets World Efficiency Record at 40.8 Percent". http://www.nrel.gov/news/press/2008/625.html.
- ^ "NREL, DARPA Both Claim Record Solar Efficiency". http://www.greentechmedia.com/articles/nrel-darpa-both-claim-record-solar-efficiency-1310.html. (A better citation would be preferred here. You can help Wikipedia by providing one.)
- ^ March 2009 issue of Photon International
- ^ "Highest Silicon Solar Cell Efficiency Ever Reached". 24 October 2008. http://www.sciencedaily.com/releases/2008/10/081023100536.htm. Retrieved 9 December 2009.
- ^ Green, Martin A (April 2002). "Third generation photovoltaics: solar cells for 2020 and beyond". Physica E: Low-dimensional Systems and Nanostructures 14 (1-2): 65–70. doi:10.1016/S1386-9477(02)00361-2.
- ^ a b c "What is the Energy Payback for PV?" (PDF). http://www.nrel.gov/docs/fy05osti/37322.pdf. Retrieved 2009-12-23.
- ^ Highest silicon solar cell efficiency ever reached
- ^ Würfel, Peter (2005) [2005]. Physics of solar cells. Weinheim: Wiley-VCH. ISBN 3-527-40428-7.
- ^ Eduardo Lorenzo (1994). Solar Electricity: Engineering of Photovoltaic Systems. Progensa. ISBN 8486505550. http://books.google.com/books?id=lYc53xZyxZQC&pg=PA78.
- ^ Antonio Luque and Steven Hegedus (2003). Handbook of Photovoltaic Science and Engineering. John Wiley and Sons. ISBN 0471491969. http://books.google.com/books?id=u-bCMhl_JjQC&pg=PT326.
- ^ a b Jenny Nelson (2003). The Physics of Solar Cells. Imperial College Press. ISBN 978-1-86094-340-9. http://www.solarfreaks.com/download/file.php?id=281.
- ^ exp represents the exponential function
- ^ A.G. Aberle and S.R. Wenham and M.A. Green, "A new Method for Accurate Measurements of the Lumped Series Resistance of Solar Cells", Proceedings of the 23rd IEEE Photovoltaic Specialists Conference, p. 113-139, 1993.
- ^ Nielsen, L.D., Distributed Series Resistance Effects in Solar Cells", IEEE Transactions on Electron Devices, Volume 29, Issue 5, p. 821 - 827, 1982.
- ^ ASTM G 173-03, "Standard Tables for Reference Solar Spectral Irradiances: Direct Normal and Hemispherical on 37° Tilted Surface," ASTM International, 2003.
- ^ "Solar Spectral Irradiance: Air Mass 1.5". National Renewable Energy Laboratory. http://rredc.nrel.gov/solar/spectra/am1.5/. Retrieved 2007-12-12.
- ^ Generally, solar cells on the market today do not produce much electricity from ultraviolet light, instead it is either filtered out or absorbed by the cell, heating the cell. That heat is wasted energy and could even lead to overheating of the cell. This can result in damage to the cell due to lattice vibrations that create defects in the crystalline material.
- ^ Cheng-Hsiao Wu and Richard Williams (1983). "Limiting efficiencies for multiple energy-gap quantum devices". J. Appl. Phys. 54: 6721. doi:10.1063/1.331859.
- ^ "UD-led team sets solar cell record, joins DuPont on $100 million project". udel.edu/PR/UDaily. 2007-07-24. http://www.udel.edu/PR/UDaily/2008/jul/solar072307.html. Retrieved 2007-07-24.
- ^ "Silicon Solar Cells with Screen-Printed Front Side Metallization Exceeding 19% Efficiency". http://www.ise.fraunhofer.de/veroeffentlichungen/konferenzbeitraege/2007/22nd-european-photovoltaic-solar-energy-conference-and-exhibition-milano-italy-2007/silicon-solar-cells-with-screen-printed-front-side-metallization-exceeding-19-efficiency.
- ^ M. Ito, K. Kato, K. Komoto, et al. (2008). "A comparative study on cost and life-cycle analysis for 100 MW very large-scale PV (VLS-PV) systems in deserts using m-Si, a-Si, CdTe, and CIS modules". Progress in Photovoltaics: Research and Applications 16: 17–30. doi:10.1002/pip.770.
- ^ K. L. Chopra, P. D. Paulson, and V. Dutta (2004). "Thin-film solar cells: An overview Progress in Photovoltaics". Research and Applications 12: 69–92.
- ^ "Net Energy Analysis For Sustainable Energy Production From Silicon Based Solar Cells" (PDF). http://jupiter.clarion.edu/~jpearce/Papers/netenergy.pdf. Retrieved 2008-12-30.
- ^ Corkish, Richard (1997). "Can Solar Cells Ever Recapture the Energy Invested in their Manufacture?". Solar Progress 18 (2): 16–17. http://www.csudh.edu/oliver/smt310-handouts/solarpan/pvpayback.htm.
- ^ "String ribbon silicon solar cells with 17.8% efficiency". http://www.ece.gatech.edu/research/UCEP/papers/3world/STRING%20RIBBON%20SILICON%20SOLAR%20CELLS%20WITH%2017.8%25%20EFFICIENCY.pdf.
- ^ a b Fthenakis, Vasilis M. (August 2004). "Life cycle impact analysis of cadmium in CdTe PV production" (PDF). Renewable and Sustainable Energy Reviews 8: 303–334. doi:10.1016/j.rser.2003.12.001. http://www.firstsolar.com/pdf/Brookhaven_Life_Cycle_Analysis.pdf.
- ^ "Thin film CuInSe2/Cd(Zn)S Heterojunction Solar Cell : Characterization and Modeling", Murat Nezir Eron, PhD. Theseis, Drexel University, 1984, Philadelphia
- ^ "NREL Sets New CIGS Thin Film Efficiency Record (March 30, 2008)". http://www.solarbuzz.com/news/NewsNATE50.htm. (A better citation would be preferred here. You can help Wikipedia by providing one.)
- ^ "Indium". http://minerals.usgs.gov/minerals/pubs/commodity/indium/indiumcs06.pdf.
- ^ Tuttle et el. (2005). Design Considerations and Implementation of Very-Large Scale Manufacturing of CIGS Solar Cells and Related Products. 20th European Photovoltaic Solar Energy Conference and Exhibition. (A better citation would be preferred here. You can help Wikipedia by providing one.)
- ^ R. M. Swanson, "The Promise of Concentrators," Progress in Photovoltaics: Res. Appl. 8, pp. 93-111 (2000).
- ^ http://www.spectrolab.com/DataSheets/TerCel/tercell.pdf
- ^ Spectrolab - Frequently Asked Questions
- ^ New world record for Nijmegen solar cell (dutch)
- ^ http://www.foxbusiness.com/story/markets/industries/finance/solarmer-breaks-world-records-plastic-solar-technology/ Fox Business News
- ^ Mayer, A et al. (2007). "Polymer-based solar cells". Materials Today 10 (11): 28. doi:10.1016/S1369-7021(07)70276-6.
- ^ R.W. Collins, A.S. Ferlauto, G.M. Ferreira, C. Chen, J. Koh, R.J. Koval, Y. Lee, J.M. Pearce, and C. R. Wronski, Evolution of microstructure and phase in amorphous, protocrystalline, and microcrystalline silicon studied by real time spectroscopic ellipsometry, Solar Energy Materials and Solar Cells, 78(1-4), pp. 143-180, 2003.
- ^ J. M. Pearce, N. Podraza, R. W. Collins, M.M. Al-Jassim, K.M. Jones, J. Deng, and C. R. Wronski (2007). "Optimization of Open-Circuit Voltage in Amorphous Silicon Solar Cells with Mixed Phase (Amorphous + Nanocrystalline) p-Type Contacts of Low Nanocrystalline Content". Journal of Applied Physics 101: 114301. http://me.queensu.ca/people/pearce/publications/documents/t14.pdf.
- ^ P. I. Widenborg and A. G. Aberle, "Polycrystalline silicon thin-film solar cells on AIT-textured glass superstrates," Advances in OptoElectronics, vol. 2007, September 2007.
- ^ M. L. Terry, A. Straub, D. Inns, D. Y. Song, and A. G. Aberle, "Large open-circuit voltage improvement by rapid thermal annealing of evaporated solid-phase-crystallized thin-film silicon solar cells on glass," Applied Physics Letters, vol. 86, p. 3, April 2005.
- ^ http://www.nrel.gov/news/press/release.cfm/release_id=10
- ^ http://www.nrel.gov/ncpv/new_in_cpv.html
- ^ "World-leading mega scale station for Victoria" (PDF). Solar Systems Pty Ltd.. http://www.solarsystems.com.au/documents/SolarSystemsMediaRelease.pdf.
- ^ http://www.electronicsweekly.com/Articles/2009/11/05/47342/solar-cells-can-significantly-extend-mobile-battery-life-sharp.htm
- ^ http://www.renewableenergyworld.com/rea/news/article/2010/01/glitter-sized-solar-photovoltaics-produce-competitive-results?cmpid=WNL-Wednesday-January6-2010
- ^ Newswise Science News|Slicing Solar Power Costs with New Wafer-Cutting Method
- ^ Nohira T, Yasuda K, Ito Y (2003). "Pinpoint and bulk electrochemical reduction of insulating silicon dioxide to silicon". Nat Mater 2 (6): 397–401. doi:10.1038/nmat900. PMID 12754498.
- ^ Jin X, Gao P, Wang D, Hu X, Chen GZ (2004). "Electrochemical preparation of silicon and its alloys from solid oxides in molten calcium chloride". Angew. Chem. Int. Ed. Engl. 43 (6): 733–6. doi:10.1002/anie.200352786. PMID 14755706.
- ^ a b "Sliver Technology Research at the Australian National University". http://solar.anu.edu.au/research/sliver.php.
- ^ M. A. Green, "Consolidation of Thin-film Photovoltaic Technology: The Coming Decade of Opportunity," Progress in Photovoltaics: Research and Applications, vol. 14, pp. 383-392, August 2006.
- ^ P. A. Basore, "CSG-1: Manufacturing a New Polycrystalline Silicon PV Technology," in Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, Hawaii, 2006, pp. 2089-2093.
- ^ M. A. Green, P. A. Basore, N. Chang, D. Clugston, R. Egan, R. Evans, D. Hogg, S. Jarnason, M. Keevers, P. Lasswell, J. O'Sullivan, U. Schubert, A. Turner, S. R. Wenham, and T. Young, "Crystalline silicon on glass (CSG) thin-film solar cell modules," Solar Energy, vol. 77, pp. 857-863, 2004.
- ^ V. Terrazzoni-Daudrix, F.-J. Haug, C. Ballif, et al., "The European Project Flexcellence Roll to Roll Technology for the Production of High Efficiency Low Cost Thin Film Solar Cells," in Proc. of the 21st European Photovoltaic Solar Energy Conference, 4-8 September 2006, pp. 1669-1672.
- ^ NREL: Feature Story - Photovoltaics Innovations Win 2 R&D 100 Awards
- ^ Emcore Corporation|Fiber Optics · Solar Power
- ^ "Peter Weiss". "Quantum-Dot Leap". Science News Online. http://www.sciencenews.org/view/feature/id/7397/title/Quantum-Dot_Leap. Retrieved 2005-06-17.
- ^ R. M. Swanson, "A Vision for Crystalline Silicon Photovoltaics," Progress in Photovoltaics: Research and Applications, vol. 14, pp. 443-453, August 2006.
- ^ IBM Press room - 2007-10-30 IBM Pioneers Process to Turn Waste into Solar Energy - United States
- ^ MicroContinuum, Inc
- ^ J. Yamaura et al. (2003). "Ultraviolet light selective photodiode based on an organic–inorganic heterostructure". Appl. Phys. Lett. 83: 2097. doi:10.1063/1.1610793.
- ^ 3D Solar Cells Boost Efficiency While Reducing Size, Weight and Complexity of Photovoltaic Arrays
- ^ http://www.physorg.com/news131730850.html
- ^ http://prl.aps.org/abstract/PRL/v100/i20/e207402
- ^ S.A. Kalogirou, Y. Tripanagnostopoulos (2006). "Hybrid PV/T solar systems for domestic hot water and electricity production". Energy Conversion and Management 47 (18-19): 3368. doi:10.1016/j.enconman.2006.01.012.
- ^ Solar Cell Production Jumps 50 Percent in 2007
- ^ "High Growth Reported for the Global Photovoltaic Industry". Reuters. 2009-03-10. http://www.reuters.com/article/pressRelease/idUS171170+03-Mar-2009+BW20090303.
- ^ "First Solar’s Gift to China: How to Build a Solar Farm". GreentechMedia. 2009-09-10. http://www.greentechmedia.com/articles/read/first-solars-gift-to-china-how-to-build-a-solar-farm/.
- ^ "Veeco Make Plans to be First CIGS Thin Film Solar Manufacturer in China". AZoNetwork. 2009-09-10. http://www.azom.com/news.asp?newsID=18880.
- ^ "Boost domestic solar industry". China daily. 2009-09-10. http://www.chinadaily.com.cn/cndy/2009-09/10/content_8674282.htm.
- ^ EERE News: EERE Network News
External links
| Solar energy |
|
| Concepts |
|
|
| Solar power |
|
Thermal
|
|
|
|
Chemical
|
|
|
|
Experimental
|
|
|
|
Concentrators
|
|
|
|
Photovoltaics
|
|
|
|
By country
|
|
|
|
| Distribution |
|
|
| Transport |
|
|
| Other applications |
|
Agriculture
|
|
|
|
Lighting
|
|
|
|
Process heat
|
|
|
|
Cooking
|
|
|
|
Disinfection
|
|
|
|
Desalination
|
|
|
|
Water heating
|
|
|
|
Wikis
Quiz
Map
Misc
volts.
Search
