Method for producing silicon for use in solar cells
US6090361A · kind A · utility
21Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1998 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Mar 23, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B15/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.