Solar cell with trench through pn junction
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United States of America Patent
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-
Jan 29, 1991
Issued Date -
N/A
app pub date -
Jun 30, 1989
filing date -
May 13, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A solar cell fabrication procedure is described in which a trench is cut in the substrate so as to electrically isolate front and back regions of a flat solar cell. The trench is preferably cut around the perimeter of the rear side of the cell. The trench is preferably formed by an excimer laser which may be used to ablate a trench without diffusing conductive material deeper into the cell.
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