| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Outline of Final Research Achievements |
With the recent progress of photovoltaics and solar cell industries, new production process of solar-grade silicon with high productivity is required. In this work, a silicon production process based on a thermite reaction of silicon oxide, which includes simultaneous reduction and refining reactions, was investigated. Through the observation of the silicon products and analysis on in-situ temperature measurement using a thermocouple and a pyrometer, it was found that the produced silicon was melting during the reduction and the temperature was higher than its melting point. The distribution of the impurity elements between the silicon and the oxide byproduct phases was analyzed.
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