Semiconductor device manufacturing: process – Having integral power source
Reexamination Certificate
2010-10-05
2011-12-27
Coleman, W. David (Department: 2823)
Semiconductor device manufacturing: process
Having integral power source
C438S689000, C216S097000, C136S261000
Reexamination Certificate
active
08084280
ABSTRACT:
A method of manufacturing a solar cell wherein a pre-cleaning step is completed prior to a saw damage removal step and prior to texturization, thereby resulting in the subsequently formed textured surface to have a more homogeneous textural morphology. In one aspect, the invention is a method comprising: a) applying a pre-cleaning solution to an as-cut surface of a crystalline silicon substrate to remove surface contaminants, thereby converting the as-cut surface to a pre-cleaned surface, the as-cut surface formed by a sawing process to create the crystalline silicon substrate; b) applying a first etching solution to the pre-cleaned surface to remove physical damage caused during the sawing process, thereby converting the pre-cleaned surface into a prepared surface; c) applying a second etching solution to the prepared surface to texturize the prepared surface, thereby converting the prepared surface into a texturized surface; and d) forming at least one solar cell on the texturized surface of the crystalline silicon substrate.
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Chen Gim-Syang
Kashkoush Ismail
Akrion Systems LLC
Coleman W. David
The Belles Group P.C.
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