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Spectrally-engineered solar thermal photovoltaic devices

United States Patent

9,929,690
March 27, 2018
View the Complete Patent at the US Patent & Trademark Office
A solar thermal photovoltaic device, and method of forming same, includes a solar absorber and a spectrally selective emitter formed on either side of a thermally conductive substrate. The solar absorber is configured to absorb incident solar radiation. The solar absorber and the spectrally selective emitter are configured with an optimized emitter-to-absorber area ratio. The solar thermal photovoltaic device also includes a photovoltaic cell in thermal communication with the spectrally selective emitter. The spectrally selective emitter is configured to permit high emittance for energies above a bandgap of the photovoltaic cell and configured to permit low emittance for energies below the bandgap.
Lenert; Andrej (Ann Arbor, MI), Bierman; David (Cambridge, MA), Chan; Walker (Princeton, NJ), Celanovic; Ivan (Cambridge, MA), Soljacic; Marin (Belmont, MA), Wang; Evelyn N. (Cambridge, MA), Nam; Young Suk (Yongin, KR), McEnaney; Kenneth (Cornish, NH), Kraemer; Daniel (Providence, RI), Chen; Gang (Carlisle, MA)
Massachusetts Institute of Technology (Cambridge, MA)
14/ 529,578
20160164451
October 31, 2014
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with Government support under Contract Nos. DE-SC0001299 and DE-FG02-09ER46577 awarded by the Department of Energy and under Contract No. W911NF-13-D-0001 awarded by the Army Research Office. The Government has certain rights in the invention.