PHOTOVOLTAIC CELL WITH SEMICONDUCTOR FINGERS
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United States of America Patent
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Issued Date -
Feb 3, 2011
app pub date -
Jul 30, 2010
filing date -
Jul 30, 2009
priority date (Note) -
Abandoned
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Abstract
A photovoltaic cell has a semiconductor substrate formed from semiconductor material doped by a first dopant type, and a doped region over at least a portion of the substrate. The doped region is doped by a second dopant type that is opposite to that of the first dopant type to form an emitter. Moreover, the doped region is doped to a region dopant level. In addition to the substrate and emitter, the cell also has a plurality of semiconductor fingers formed on the emitter, a plurality of busbars formed from a conductor and intersecting the plurality of semiconductor fingers, and a plurality of tabs soldered to the busbars. The fingers are doped by the second dopant type to have a second dopant level, which is greater than the region dopant level.
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