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Abstract

A spectrum manipulation device and method for increasing an energy conversion efficiency of a photovoltaic cell arrangement, the device including: (a) a black body adapted to absorb an input electromagnetic energy having an input energy flux spectrum, and to emit a first output electromagnetic energy having a different, output energy flux spectrum; (b) a transparent cover, adapted to thermally insulate the black body from an ambient environment, and to receive light and direct the light towards the black body; (c) an optical device, facing the black body, and adapted to: (i) receive the first output energy and emit a second output electromagnetic energy having a narrow, modified energy flux spectrum, with respect to the output energy flux spectrum, and (ii) recycle some of the first output electromagnetic energy to the black body; (d) a photovoltaic cell having a photon absorption surface, disposed to be in optical communication with the optical device, and (e) a housing containing the black body and the optical device, and adapted to thermally insulate the black body and to fix a position of the black body with respect to the optical device, the optical device further adapted to direct the second output energy towards the photon absorption surface.

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First Claim