Keywords: PVeff(rev150317).jpg en Conversion efficiencies of best research solar cells worldwide from 1976 through 2015 for various photovoltaic technologies Efficiencies determined by certified agencies/laboratories 2015-03-17 08 20 46 National Renewable Energy Laboratory NREL Golden CO Greg Wilson and Keith Emery other versions PD-USGov Uploaded with UploadWizard Uncategorized 2015 March 18 |