Process and apparatus for the cyclical manufacture of...

Details Process and apparatus for the cyclical manufacture of... Process and apparatus for the cyclical manufacture of...

C - Chemistry, Metallurgy

30

B

148/3.7

C30B 11/00 (2006.01) C30B 29/06 (2006.01)

Patent

CA 1263293

PROCESS AND APPARATUS FOR THE CYCLICAL MANUFACTURE OF SILICON SHAPE ARTICLES ABSTRACT OF THE DISCLOSURE A process and apparatus for the manufacture of silicon blocks having a columnar structure comprising monocrystalline crystal zones having a crystallographic preferred orientation. In a casting process, each mold filled with molten silicon is transferred, before the silicon has solidified completely, to a separate crystallization station where the silicon can then crystallize completely. During this process, the exposed surface of the silicon is maintained in a molten state until the end of the solidification process has almost been reached. The process allows the various, necessary steps to be carried out simultaneously and yields high-quality solar cell base material.

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