Method for producing multicrystalline silicon substrate for solar cells
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United States of America Patent
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Nov 14, 2006
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app pub date -
Dec 3, 2004
filing date -
Jun 6, 2002
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Abstract
Disclosed is a method for producing a multicrystalline silicon substrate for solar cells comprising: a metal deposition step for depositing such metal particles as platinum and silver on the surface of the substrate by electroless-plating chloroplatinic acid or silver perchlorate; a boring step for subjecting the substrate surface to etching in a solution containing at least one of hydrofluoric acid and hydrogen peroxide; and a step for removing a stain layer by immersing the substrate into an alkaline solution. A multicrystalline silicon substrate having a lower reflectance is provided at a lower cost.
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