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Purification of metallurgical silicon up to solar grade |
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| Authors: | N Yuge H Baba Y Sakaguchi K Nishikawa H Terashima F Aratani |
| Abstract: | A new production process of solar-grade silicon (SOG-Si) for small demand which is made from metallurgical-grade silicon (MG-Si) is proposed here, based on the findings of silicon refining stage in NEDO (New Energy and Industrial Technology Development Organization) Direct Reduction Process. SOG-Si trially produced was made into a multicrystalline cell through NEDO Project and the conversion efficiency was max. 10.9%. |
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