Development of silicon purification by strong radiation catalysis method

doi:10.1088/1674-1056/19/11/118105

中国物理B ›› 2010, Vol. 19 ›› Issue (11): 118105-110301.doi: 10.1088/1674-1056/19/11/118105

Development of silicon purification by strong radiation catalysis method

何祚庥¹, 陈应天², 林晨星³, 林文汉³

(1)Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China; (2)Southern University of Science and Technology, Shenzhen 518055, China;Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China; Yangzhou University, Yangzhou 225009, China; Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China; (3)Yangzhou University, Yangzhou 225009, China

出版日期:2010-11-15 发布日期:2010-11-15

Development of silicon purification by strong radiation catalysis method

Chen Ying-Tian(陈应天)^a)b)c)†, Ho Tso-Hsiu(何祚庥)^c), Lim Chern-Sing(林晨星)^b), and Lim Boon Han(林文汉)^b)

^a Southern University of Science and Technology, Shenzhen 518055, China; ^b Yangzhou University, Yangzhou 225009, China; ^cInstitute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China

Online:2010-11-15 Published:2010-11-15

摘要/Abstract

摘要： Using a new type of solar furnace and a specially designed induction furnace，cost effective and highly efficient purification of metallurgical silicon into solar grade silicon can be achieved. It is realized by a new method for extracting boron from silicon with the aid of photo-chemical effect. In this article, we discussed the postulated principle of strong radiation catalysis and the recent development in practice. Starting from ordinary metallurgical silicon, we achieved a purification result of 0.12 ppmw to 0.3 ppmw of boron impurity in silicon by only single pass of a low cost and simple process, the major obstacle to make `cheap' solar grade silicon feedstock in industry is thus removed.

Abstract: Using a new type of solar furnace and a specially designed induction furnace，cost effective and highly efficient purification of metallurgical silicon into solar grade silicon can be achieved. It is realized by a new method for extracting boron from silicon with the aid of photo-chemical effect. In this article, we discussed the postulated principle of strong radiation catalysis and the recent development in practice. Starting from ordinary metallurgical silicon, we achieved a purification result of 0.12 ppmw to 0.3 ppmw of boron impurity in silicon by only single pass of a low cost and simple process, the major obstacle to make `cheap' solar grade silicon feedstock in industry is thus removed.

Key words: silicon purification, strong radiation catalysis, boron removal, solar furnace

中图分类号: (Photochemistry)

82.50.-m

89.20.Bb (Industrial and technological research and development)

陈应天, 何祚庥, 林晨星, 林文汉. Development of silicon purification by strong radiation catalysis method[J]. 中国物理B, 2010, 19(11): 118105-110301.

Chen Ying-Tian(陈应天), Ho Tso-Hsiu(何祚庥), Lim Chern-Sing(林晨星), and Lim Boon Han(林文汉). Development of silicon purification by strong radiation catalysis method[J]. Chin. Phys. B, 2010, 19(11): 118105-110301.

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[7]	Liu Z P 2006 Journal of University of Science and Technology of China 36 1245
[8]	Teixeira L A V, Tokuda Y, Yoko T and Morita K 2009 ISIJ International 49 777 endfootnotesize

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Development of silicon purification by strong radiation catalysis method

Development of silicon purification by strong radiation catalysis method

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