Keywords: PVeff(rev141218).jpg BadJPEG en Conversion efficiencies of best research solar cells worldwide from 1976 through 2015 for various photovoltaic technologies Efficiencies determined by certified agencies/laboratories 2014-12-18 04 07 20 National Renewable Energy Laboratory NREL Golden CO Greg Wilson and Keith Emery other versions PD-USGov Uploaded with UploadWizard NREL best efficiency |