Method for processing silicon powder to obtain silicon crystals
US8273176B2 · kind B2 · utility
3Cited by
14References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2011 |
| Grant date | Sep 25, 2012 |
| Priority date | — |
| Expiry date | Jun 13, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T117/1092
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Embodiments of the present invention relate to a process for obtaining silicon crystals from silicon. The method includes contacting silicon powder with a solvent metal to provide a mixture containing silicon, melting the silicon under submersion to provide a first molten liquid, contacting the first molten liquid with a first gas to provide dross and a second molten liquid, separating the dross and the second molten liquid, cooling the second molten liquid to form first silicon crystals and a first mother liquid and separating the first silicon crystals and the first mother liquid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.