Boron Removal from Metallurgical Silicon using Si-Al-Sn Ternary Alloy

被引：18
作者：
Xu, Fumin [1 ,2 ,3 ]
Wu, Shenrui [1 ,2 ]
Tan, Yi [1 ,2 ]
Li, Jiayan [1 ,2 ]
Li, Yaqiong [1 ,2 ]
Liu, Yao [1 ,2 ]
机构：
[1] Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China
[2] Key Lab Solar Energy Photovolta Liaoning Prov, Dalian, Peoples R China
[3] Univ New S Wales, Sch Photovolta & Renewable Energy Engn, Sydney, NSW, Australia
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2014年 / 49卷 / 02期
关键词：
alloy refining; segregation coefficient; Si-Al-Sn alloy; solar-grade silicon; JANAF THERMOCHEMICAL TABLES; IMPURITY GETTER; GRADE SILICON; EQUILIBRIUM DISTRIBUTION; LIQUID-PHASES; 3RD EDITION; PURIFICATION; IRON; SOLIDIFICATION; PHOSPHORUS;
D O I：
10.1080/01496395.2013.817423
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Numerous studies have searched for methods of Si refining for the production of photovoltaic cells to alleviate the global shortage of solar-grade Si. An alloy refining progress with a Si-Al-Sn melt was developed in this paper. To elucidate the relationship between Sn and B, the interaction parameter between them at 1173K was determined as 2506 +/- 143. This result indicated the strongly repulsive force between Sn and B. Thermodynamic analysis and experiments showed that the purification efficiency of Si-Al-Sn alloy weakened with increased Sn content in the melt.
引用
收藏
页码：305 / 310
页数：6
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