CONDITIONING COMPOSITIONS FOR SOLAR CELLS
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United States of America Patent
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Issued Date -
Jul 26, 2012
app pub date -
Jan 20, 2012
filing date -
Jan 20, 2011
priority date (Note) -
Abandoned
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Abstract
Method of using improved compositions for conditioning silicon surfaces during the manufacture of photovoltaic devices. Used for removing particles, organic contamination, and unwanted metals from these surfaces. Also used for removing a thin layer of silicon as required for damage removal or texturing. These conditioning and surface preparation compositions comprise one or more water soluble strongly basic components capable of producing a pH greater than 10, one or more water soluble organic amines, one or more chelating agents, and water.
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