摘要 |
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. |