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Examples
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Using concentrated sunlight focused onto a small 5 mm² multi-junction solar cell made out of GaInP/GaInAs/Ge (gallium indium phosphide, gallium indium arsenide on a germanium substrate (whew!)).
Sustainable Design Update » Blog Archive » New Record Solar Cell 2009
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But regardless, there are multi-junction solar cells in production that have trebled the efficiency you claimed.
Hydrogen Cars, Arnold Kling | EconLog | Library of Economics and Liberty 2009
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Ballard is currently offering a fuel cell generator for commercial and industrial usage, and with advances in solar collection with multi-junction solar cells as well as the potential for phosporic acid fuel cells for residential and industrial use, Air Quality can certainly be improved.
Hydrogen Cars, Arnold Kling | EconLog | Library of Economics and Liberty 2009
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Their maximum theoretical efficiency is well below available multi-junction efficiency.
Thin Film Solar Companies Raise Hundreds of Millions in Financing - Bits Blog - NYTimes.com 2008
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Most, if not all, orbiting satellites use multi-junction technologies because they are lighter and produce more power.
Thin Film Solar Companies Raise Hundreds of Millions in Financing - Bits Blog - NYTimes.com 2008
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With a beginning-of-life BOL conversion efficiency in the order of 30% and the option for a patented, onboard monolithic bypass diode, EMCORE's industry leading multi-junction solar cells can provide the highest available power to interplanetary spacecrafts and earth-orbiting satellites.
unknown title 2011
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The multi-junction solar cells are nearly 40 percent efficient at converting the light into electricity, or about double the efficiency of traditional solar power panels, according to Cogentrix and the DOE.
unknown title 2011
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Production of the space-qualified multi-junction solar cells will take place at EMCORE's state-of-the-art manufacturing facilities located in Albuquerque, New Mexico.
unknown title 2011
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To optimize electricity harvest from different parts of the solar spectrum, thin films can be layered on top of each other to create a more efficient multi-junction product.
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Following continual development to achieve multi-junction cells at even higher efficiency, the newly restructured company is now driving toward volume production and a product launch is expected later this year.
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