Purification of metallurgical-grade silicon up to solar grade
Purification of metallurgical-grade silicon up to solar grade
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DOI：
10.1002/pip.372
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发表时间：
2001-05-01
影响因子：
6.7
通讯作者：
Aratani, F
中科院分区：
文献类型：
--
作者：
Yuge, N;Abe, M;Aratani, F
已经对冶金纯化工艺的可行性进行了评估，NEDO（新能源和工业技术开发组织）熔融纯化工艺用于从冶金级硅制造太阳能级硅。设备已开发到中试生产工厂规模。该系统包括用于除磷的电子束炉和用于除硼的等离子体炉。每个熔炉都有一个模具，用于定向凝固以去除金属杂质。整个过程提纯的硅锭中各杂质浓度均达到太阳能级水平，所生产的太阳能级硅具有p型极性，电阻率在0.5-1.5 Ω cm范围内。版权所有（C）2001约翰威利父子有限公司
An estimate has been made of the feasibility of a metallurgical purification process, the NEDO (New Energy and Industrial Technology Development Organization) melt-purification process, for manufacturing solar-grade silicon from metallurgical-grade silicon. Equipment has been developed to pilot manufacturing plant scale. The system comprises an electron-beam furnace for phosphorus removal and a plasma furnace for boron removal. Each furnace has a mold for directional solidification to remove metallic impurities. The concentration of each impurity in the silicon ingot purified through the whole process satisfied the solar-grade level, The Solar-grade silicon produced showed p-type polarity and resistivity within the range 0.5-1.5 Omega cm. Copyright (C) 2001 John Wiley & Sons, Ltd.