Batteries: thermoelectric and photoelectric – Photoelectric – Panel or array
Patent
1996-12-12
1999-05-11
Chapman, Mark
Batteries: thermoelectric and photoelectric
Photoelectric
Panel or array
H01L25/00
Patent
active
059024178
ABSTRACT:
A photovoltaic device uses a spectrally selective photon partitioner such as a reflector to partition incoming sunlight which is directed towards different solar cells, depending upon its energy. Solar cells having low and high energy band gaps are used, in which low energy photons are imaged towards that cell having the lower energy band gap, whereas high energy photons are imaged towards the higher energy band gap cell. By more directly imaging photons towards those cells in which they are converted to electricity, absorption losses due to free carriers in the semiconductor layers are reduced. The spectrally selective photon partitioner allows semiconductor layers having different lattice spacings to be optically coupled.
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Lillington David R.
Miller Stephen C.
Chapman Mark
Duraiswamy V. D.
Hughes Electornics Corporation
Sales M. W.
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