随着光伏市场需求不断增加,满足光伏电池技术经济指标要求的硅材料出现严重短缺,低成本提纯冶金硅至太阳能级硅的工艺技术越来越受到广泛重视.分析了国内外光伏产业的发展现状和趋势,重点介绍了冶金法提纯太阳能级硅工艺中的湿法精炼、定向凝固、真空熔炼、造渣法、电子束精炼和离子束精炼等常用技术的原理与研究现状,并进行了比较分析,展望了应用前景.
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