METHOD OF IN-LINE DIFFUSION FOR SOLAR CELLS
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United States of America Patent
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app pub date -
May 22, 2015
filing date -
Apr 12, 2013
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Abandoned
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Abstract
A method is provided for the simultaneous diffusion of dopants of different types on respective sides of a solar cell wafer in a single stage process. The dopants are applied to respective sides of the wafer in wet chemical form preferably by pad printing. The doping materials can be applied to the entire wafer surface or effective area thereof, or can be applied in a pattern to suit the intended solar cell configuration. In a typical embodiment, the dopants are boron and phosphorus.
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