Solar cell and method for manufacturing a solar cell

US5704992A · kind A · utility

Inventors

• Gerhard Willeke · Konstanz, DE
• Peter Fath · Ilsenburg, DE

Key dates

• Filing date: Mar 26, 1996
• Grant date: Jan 6, 1998
• Expiry date: Mar 26, 2016

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S438/959
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A solar cell comprising a substrate on which grooves are formed on the from and back sides thereof. The grooves on the front side are disposed in order to inscribe an angle with respect to the grooves on the back side. The intersection of the grooves on the from side and the back side form a plurality of through holes which form a grid pattern. Also disclosed is a method for producing a flat component with a grid of through holes (7). To produce the through holes (7), a plurality of generally equidistant, parallel V-shaped grooves (8) are formed on the from and back sides of a wafer. The grooves (8) on the two sides inscribe an angle relative to one another and are sufficiently deep for the through holes (7) to be automatically created at the intersections of grooves (8). The method is suitable for producing high efficiency solar cells.