Keywords: PVeff(rev150601).jpg en Conversion efficiencies of best research solar cells worldwide from 1976 through 2015 for various photovoltaic technologies Efficiencies determined by certified agencies/laboratories 2015-06-01 03 17 15 National Renewable Energy Laboratory NREL Golden CO Sarah Kurtz and Keith Emery other versions PD-USGov Uploaded with UploadWizard Uncategorized 2015 June 1 |