Calculated values of band gaps and Urbach energy.
| Sample | E gd (eV) | E gi (eV) | E u (eV) |
|---|---|---|---|
| [DMA]2ZnCl4 | 1.91 | 4.29 | 2.19 |
| [DMA]2ZnBr4 | 4.76 | 5.34 | 0.36 |
| [DMA]2CoCl4 | 1.77 | 3.84 | 1.81 |
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