LIGHT HARVESTING PHOTOVOLTAIC DEVICE
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United States of America Patent
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Issued Date -
Jul 14, 2016
app pub date -
Aug 15, 2014
filing date -
Aug 15, 2013
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Abstract
The invention concerns a photoelectric conversion device comprising: at least one photoconversion element comprising at least one organic photoconversion layer or an inorganic layer comprising quantum dots or perovskites; at least a first grating structure arranged on a first side of the photoconversion element; and at least a second grating structure arranged on a second side of the photoconversion element; wherein said at least a first grating structure is arranged so as to direct a near-infra-red light portion of light incident on said first grating structure into said photoconversion element, the said at least a second grating structure being arranged to reflect at least a part of said near-infra-red light portion back into said photoconversion element and to pass visible light out of the photoelectric conversion device.
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