论文类型：期刊论文
发表刊物：SEPARATION SCIENCE AND TECHNOLOGY
收录刊物：EI、SCIE
卷号：49
期号：2
页面范围：305-310
ISSN号：0149-6395
关键字：alloy refining; segregation coefficient; Si-Al-Sn alloy; solar-grade silicon
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.