Method for producing silicon for use in solar cells

Details Method for producing silicon for use in solar cells Method for producing silicon for use in solar cells

1998-03-23

2000-07-18

Nguyen, Ngoc-Yen

Chemistry of inorganic compounds

Silicon or compound thereof

Elemental silicon

423348, C01B 3302, C01B 33037

Patent

active

060903619

ABSTRACT:
Method for producing highly purified silicon for use in solar cells by a single solidification purification, pouring silicon into a mold and gradually fractionally solidifying it while solidifying the liquid surface, followed by purifying the solidified silicon by zone melting or continuous casting using an electromagnetic mold, or by zone melting in combination with continuous casting, and optionally causing directional solidification to concentrate impurities, leaching and recycling.

REFERENCES:
patent: 4242307 (1980-12-01), Fally
patent: 4247528 (1981-01-01), Dosaj et al.
patent: 4304763 (1981-12-01), Dietl
patent: 4379777 (1983-04-01), Boulos
patent: 4643833 (1987-02-01), Aulich et al.

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