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| Keywords: PVeff(rev141208).jpg en Conversion efficiencies of best research solar cells worldwide from 1976 through 2014 for various photovoltaic technologies Efficiencies determined by certified agencies/laboratories 2014-12-08 06 33 16 National Renewable Energy Laboratory NREL Golden CO Greg Wilson and Keith Emery other versions PD-USGov Uploaded with UploadWizard NREL best efficiency | ||||
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