| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-purity silicon production method which, in producing a high-purity Si from SiO, reduces impurities in produced Si to a level required by Si for a solar cell substrate, simply at a low cost. SOLUTION: The method produces silicon from silicon monoxide by a disproportionation reaction. By melting the silicon produced by the disproportionation reaction and keeping the melt under a reduced pressure, low-boiling impurities in the silicon are removed, yielding high-purity silicon. COPYRIGHT: (C)2005,JPO&NCIPI
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