METHOD FOR PRODUCTION OF PHOTOVOLTAIC WAFERS AND ABRASIVE SLURRY
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United States of America Patent
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Issued Date -
Sep 5, 2013
app pub date -
Oct 5, 2011
filing date -
Oct 8, 2010
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a method for production of photovoltaic wafers and abrasive slurries for multi-wire sawing of wafers for photovoltaic applications, and more specific to abrasive slurries which are easy to remove from the wafers after sawing, where the abrasive slurry comprises one part recycled abrasive slurry, an alkali in sufficient amount to provide a pH in the abrasive slurry mixture in the range from 6.0 to 9.0, and one part novel abrasive slurry in an amount sufficient to provide an ion content in the abrasive slurry mixture to provide an electric conductivity of less than 50 μS/cm.
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