Method for manufacturing crystalline silicon substrate for solar cell, method for manufacturing crystalline silicon solar cell, and method for manufacturing crystalline silicon solar cell module
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United States of America Patent
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Jun 25, 2019
Grant Date -
Mar 1, 2018
app pub date -
Jan 22, 2016
filing date -
Mar 24, 2015
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Abstract
The method for manufacturing a crystalline silicon substrate for a solar cell includes: forming a texture on the surface of a single-crystalline silicon substrate by bringing an alkali solution and the surface of the single-crystalline silicon substrate into contact with each other; bringing an acidic solution and the surface of the single-crystalline silicon substrate into contact with each other to perform an acid treatment thereon; and then by bringing ozone water and the surface of the single-crystalline silicon substrate into contact with each other to perform an ozone treatment thereon. One aspect of embodiment is that the acidic solution used for the acid treatment is hydrochloric acid. Another aspect of embodiment is that the ozone treatment is performed by immersing the single-crystalline silicon substrate into the ozone water bath.
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