Photovoltaic cells from silicon kerf

US6780665B2 · kind B2 · utility

Inventors

• Romain Billiet · Tualatin, US
• Hanh Nguyen · Bukit Mertajam, MY

Key dates

• Filing date: Aug 23, 2002
• Grant date: Aug 24, 2004
• Expiry date: Oct 11, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The disclosure describes an economical and environmentally benign method to recover crystalline silicon metal kerf from wiresaw slurries and to shape and sinter said recovered crystalline silicon kerf into thin-layer PV cell configurations with enhanced surface texture for metallization and reduced optical reflection losses.