| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing an inexpensive high purity Si source material in a large amount for a solar battery substrate. SOLUTION: The method for manufacturing Si is carried out by using slag on molten Si to migrate impurities in Si to the slag for purification, wherein high purity Si is produced by exposing the slag to reduced pressure. COPYRIGHT: (C)2007,JPO&INPIT
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