BIFACIAL SOLAR CELLS WITH BACK SURFACE DOPING
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United States of America Patent
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Issued Date -
Aug 22, 2013
app pub date -
Mar 25, 2013
filing date -
May 1, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A simplified manufacturing process and the resultant bifacial solar cell (BSC) are provided, the simplified manufacturing process reducing manufacturing costs. The BSC includes an active region located on the front surface of the substrate, formed for example by a phosphorous diffusion step. The back surface includes a doped region, the doped region having the same conductivity as the substrate but with a higher doping level. Contact grids are formed, for example by screen printing. Front junction isolation is accomplished using a laser scribe.
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