Efficiency in antireflective coating layers for solar cells

US8723021B2 · kind B2 · utility

Assignee

• International Business Machines Corporation · US

Inventors

• Harold J. Hovel · Katonah, US
• Rainer Krause · Hochheim, DE
• Zhengwen Li · Danbury, US
• Huilong Zhu · Poughkeepsie, US

Key dates

• Filing date: Mar 9, 2012
• Grant date: May 13, 2014
• Expiry date: Mar 9, 2032

Classification

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

Abstract

A solar cell includes a substrate having an N-region and a P-region, a first anti-reflective layer disposed on the substrate, a metallic contact disposed on the first anti-reflective layer, a second anti-reflective layer disposed on the first anti-reflective layer and the metallic contact, and a region partially defined by the first anti-reflective layer and the second anti-reflective layer having diffused metallic contact material operative to form a conductive path to the substrate through the first anti-reflective layer, the metallic contact, and the second anti-reflective layer.