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| Keywords: PVeff(rev160420).jpg en Conversion efficiencies of best research solar cells worldwide from 1976 through 2016 for various photovoltaic technologies Efficiencies determined by certified agencies/laboratories 2016-04-20 04 42 40 National Renewable Energy Laboratory NREL Golden CO Sarah Kurtz and Keith Emery other versions PD-USGov Uncategorized 2016 April 20 | ||||
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