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File:PVeff(rev120404).jpg

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English: Conversion efficiencies of best research solar cells worldwide from 1976 through 2012 for various photovoltaic technoloiges. Efficiencies determined by certified agencies/laboratories.
Date
Source National Renewable Energy Laboratory (NREL), Golden, CO
Author Lawrence L. Kazmerski

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Public domain This image is a work of a United States Department of Energy (or predecessor organization) employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

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current16:06, 4 April 2012Thumbnail for version as of 16:06, 4 April 20123,931 × 2,424 (3.55 MB)Dgwinner (talk | contribs)

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