Photovoltaic cell and process
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United States of America Patent
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Dec 31, 1991
Grant Date -
N/A
app pub date -
Aug 27, 1990
filing date -
Aug 27, 1990
priority date (Note) -
Expired
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Abstract
An improved photovoltaic cell and a process of making it are disclosed. Essentially, the process merges the technology of ESB with the phenomenon of total internal reflection to provide a photovoltaic cell of improved conversion efficiency and comprising a solar cell formed of a semiconductor material and provided with a front contact, a cover plate formed of a glass having a thermal expansion coefficient matching that of the semiconductor material, with the back surface of the cover plate provided with a plurality of V-grooves overlying the front contact and being electrostatically bonded to the solar cell. The V-grooves serve both as clearance slots for the front contact and its converging facets as reflecting surfaces to direct incident light onto the cell's surfaces in between the front contact grid lines.
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