Process and apparatus for the cyclical manufacture of silicon shaped articles
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United States of America Patent
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Sep 6, 1988
Grant Date -
N/A
app pub date -
Jun 26, 1985
filing date -
Jul 25, 1984
priority date (Note) -
Expired
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Abstract
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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