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Thin-Film Solar Cell Efficiency Exceeds 20 Percent

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DÜBENDORF, Switzerland, Jan. 24, 2013 — Thin-film solar cells on flexible polymer foils, based on copper indium gallium (di)selenide (CIGS), have set an efficiency record of 20.4 percent for converting sunlight into electricity. This is the fifth consecutive record for scientists at Empa, the Swiss Federal Laboratory for Materials Science and Technology, beating their May 2011 feat of 18.7 percent (See: Flexible Solar Cells Set Efficiency Record). “We have now — finally — managed to close the ‘efficiency gap’ to solar cells based on polycrystalline silicon wafers or CIGS thin-film cells on...Read full article

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    Published: January 2013
    Ayodhya TiwariCIGSEmpaenergyenergy conversion efficiencyEuropeEuropean Union Framework ProgrammesFlisomFraunhofer Institute for Solar Energy SystemsFraunhofer ISEGermanyGian-Luca Bonagreen photonicsindustrialphotovoltaicspolycrystalline silicon solar cellsResearch & Technologyroll-to-roll manufacturingsilicon solar cellsSwiss Federal Laboratories for Materials Science and TechnologySwiss National Science FoundationSwitzerlandthe Commission for Technology and Innovationthe Swiss Federal Office of Energythin-film solar cells

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