Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2014-01-22

Journal: SEPARATION SCIENCE AND TECHNOLOGY

Included Journals: EI、SCIE

Volume: 49

Issue: 2

Page Number: 305-310

ISSN: 0149-6395

Key Words: alloy refining; segregation coefficient; Si-Al-Sn alloy; solar-grade silicon

Abstract: 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.