![]() |
个人信息Personal Information
副教授
博士生导师
硕士生导师
性别:男
毕业院校:山东大学
学位:博士
所在单位:材料科学与工程学院
学科:材料学. 材料加工工程
办公地点:新三束实验楼209室
联系方式:0411-84709784
电子邮箱:ptli@dlut.edu.cn
冶金法制备太阳能级多晶硅的耦合除杂研究
点击次数:
发表时间:2017-01-01
发表刊物:无机材料学报
所属单位:材料科学与工程学院
卷号:32
期号:3
页面范围:281-286
ISSN号:1000-324X
摘要:Preparation of 6N grade polycrystalline silicon materials using raw materials of industrial silicon was explored by medium melting, directional solidification and electron beam melting. The contents of impurities B and P in the samples are both lower than 0.20 ppmw, while the total content of metal impurity (TM) is less than 0.23 ppmw. Dur-ing the process of removing B by medium melting, a large proportion of Al and Ca is simultaneously removed through the redox reaction. During the process of electron beam melting, volatile impurities including P, Al and Ca are fur-ther effectively removed by using saturated vapor pressure. Meanwhile, other metal impurities are removed by de-creasing beam power, which induces the occurrence of directional solidification. Coupling of metallurgical methods reduces the purification process of polycrystalline silicon, and provides the technical support for continuous and large-scale production.
备注:新增回溯数据