Layer system for thin-film solar cells having an NaxIn1SyClz buffer layer

US9871155B2 · kind B2 · utility

Assignee

• Bengbu Design & Research Institute for Glass Industry · CN

Inventors

• Thomas HAPP · Birkenfeld, DE
• Stefan Jost · Munich, DE
• Jörg Palm · Birkenfeld, DE
• Stephan Pohlner · Birkenfeld, DE
• Thomas DALIBOR · Herrsching am Ammersee, DE
• Roland Dietmüller · Birkenfeld, DE

Key dates

• Filing date: Jun 19, 2013
• Grant date: Jan 16, 2018
• Expiry date: Jun 19, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50

Abstract

The present invention relates to a layer system (1) for thin-film solar cells with an absorber layer (4) that contains a chalcogenide compound semiconductor and a buffer layer (5) that is arranged on the absorber layer (4), wherein the buffer layer (5) contains NaxIn1SyClz with 0.05≦x<0.2 or 0.2<x≦0.5, 1≦y≦2, and 0.6≦x/z ≦1.4.