发明名称 |
METHOD FOR MANUFACTURING OF SILICON, SILICON, AND SOLAR CELL |
摘要 |
The present invention provides a silicon manufacturing method for purifying silicon metal to manufacture solar cell silicon by reducing boron contained as impurities in the silicon metal. The present invention provides a silicon manufacturing method including preparing a mixture containing both silicon in a molten state and a molten salt, introducing a gas containing a chlorine atom into the mixture, and introducing moisture vapor together with the chlorine-atom containing gas. The chlorine-atom containing gas may preferably be a chlorine gas or silicon tetrachloride. The molten salt may preferably be composed of a mixture containing at least silicon dioxide and calcium oxide, and the mixture may additionally contain calcium fluoride.
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申请公布号 |
US2010202954(A1) |
申请公布日期 |
2010.08.12 |
申请号 |
US20090413563 |
申请日期 |
2009.03.29 |
申请人 |
SHIN-ETSU CHEMICAL CO., LTD. |
发明人 |
YAMADA MOTOYUKI;HATAYAMA KAZUHISA |
分类号 |
C01B33/023;C01B33/02 |
主分类号 |
C01B33/023 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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