Publication Date:
2014-07-11
Description:
The reason why so-called wide-bandgap CuIn 1−x Ga x Se 2 (CIGSe with x 〉 0.4) based solar cells show hindered performance compared with theoretical expectations is still a matter of debate. In the present Letter, atom probe tomography studies of CuIn 1−x Ga x Se 2 polycrystalline thin films with x varying from 0 to 1 are reported. These investigations confirm that the grain boundaries (GBs) of low gallium containing ( x 0.8) are Cu-enriched compared with GI. For intermediate gallium contents (0.4
Print ISSN:
0003-6951
Electronic ISSN:
1077-3118
Topics:
Physics
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