Table 4.
Chemical composition of the Cu2ZnGeS4 single crystals.
| Sample | Cu at.% | Zn at.% | Ge at.% | Cu/(Zn + Ge) | Zn/Ge |
|---|---|---|---|---|---|
| #1 | 24.1 | 12.6 | 13.3 | 0.93 | 0.95 |
| #2 | 25.4 | 13.0 | 11.6 | 1.03 | 1.12 |
| #3 | 24.1 | 12.4 | 13.5 | 0.93 | 0.92 |
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