Batteries: thermoelectric and photoelectric – Photoelectric – Cells
Patent
1990-11-07
1992-03-24
Weisstuch, Aaron
Batteries: thermoelectric and photoelectric
Photoelectric
Cells
136255, 136256, H01L 3106
Patent
active
050984829
ABSTRACT:
An improved vertical junction solar cell wherein the vertical junctions are formed by a plurality of grooves etched in the silicon wafer of the solar cell. The grooves define a plurality of walls having a top surface and side surfaces and a plurality of groove bottoms therebetween. In order to increase radiation resistance in such vertical junction solar cells, a focusing coverslide is provided which retracts or reflects incident light onto only the top surfaces of the walls and away from the grooved bottoms. It has been discovered that the majority of the radiation degradation in vertical junction solar cells occurs as a result of incident light impinging on the grooved bottoms, which are less resistant to radiation than are the top walls. Thus, the present invention provides a vertical junction solar cell with greatly increased radiation resistivity.
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Solarex Corporation
Weisstuch Aaron
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