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Direct and indirect optical band gaps and activation energy for PVC and PVC/ZnS/Mn polymers prepared at different temperatures.
| Sample | Direct Eg (eV) | Indirect Eg (eV) | EA (eV) |
|---|---|---|---|
| Undoped PVC | 5.41 | 4.52 | 0.174 |
| Doped PVC with ZnS/Mn prepared at | |||
| 300 °C | 4.56 | 3.63 | 0.187 |
| 400 °C | 4.61 | 3.8 | 0.165 |
| 500 °C | 4.67 | 4.08 | 0.185 |
