Process for the production of solar silicon

US4919913A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Gunter Kurz · Goldkronach, DE
• Martin Abels · Krefeld, DE
• Ingo Schwirtlich · Miltenberg, DE
• Peter Woditsch · Krefeld, DE

Key dates

• Filing date: Jul 3, 1989
• Grant date: Apr 24, 1990
• Expiry date: Jul 3, 2009

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S423/12
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The process for producing silicon suitable for use in solar cells is improved by reacting a gaseous silicon compound with aluminum wherein a finely dispersed molten surface of pure aluminum or an aluminum/silicon alloy is intensively contacted with the gaseous silicon compound during the reaction.