Process for the production of silicon

US4525334A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Peter Woditsch · Krefeld, DE
• Martin Abels · Krefeld, DE
• Berthold Brazel · Krefeld, DE

Key dates

• Filing date: Mar 13, 1984
• Grant date: Jun 25, 1985
• Expiry date: Mar 13, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B33/033
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A process for the production of silicon comprising reacting a gaseous silicon compound of the formula SiH.sub.n X.sub.4-n, wherein X is halogen and n is 0 to 3, with aluminum in solid state. The resulting silicon can be highly pure and will have the particle size of the aluminum feed, making it especially useful for production of solar cells.