PHOTOVOLTAIC DEVICE AND METHOD OF ITS FABRICATION
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United States of America Patent
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Issued Date -
Jan 3, 2013
app pub date -
Oct 11, 2010
filing date -
Dec 16, 2009
priority date (Note) -
Abandoned
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Abstract
A photovoltaic device is presented including one or more cell units. The photovoltaic device comprises a semiconductor substrate having a patterned light collecting surface defining an array of spaced-apart substantially parallel first grooves. Each of these first grooves has a bottom portion, comprising a bottom surface and side walls extending from the bottom portion and being substantially perpendicular to the surface of the device. A heavily doped semiconductor layer in the form of spaced-apart regions is located at the bottom surfaces of the first grooves respectively. Further improvement of performance is obtained by deposition of thin metal lines on top of the heavily doped spaced apart lines.
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