Table 1.
The activation energy, conductivity at fixed frequencies and optical parameters values of (PVA)0.7(NaBr)0.3(H3PO4)xM films.
| H3PO4 concentration (M) | Activation energy (eV) | Conductivity at room temperature (S/cm) |
Optical parameters (eV) |
|||
|---|---|---|---|---|---|---|
| 100 Hz | 1 kHz | 100 kHz | Band gap energy | Band tail width | ||
| 0.00 | 0.63 | 1.74E−06 | 2.02E−06 | 6.23E−06 | 3.57 | 0.34 |
| 0.85 | 0.52 | 3.90E−05 | 4.13E−05 | 4.44E−05 | 3.52 | 0.49 |
| 1.7 | 0.44 | 1.08E−04 | 1.27E−04 | 1.45E−04 | 3.47 | 0.56 |
| 3.4 | 0.37 | 9.84E−04 | 1.24E−03 | 1.82E−03 | 3.44 | 0.62 |
| 5.1 | 0.19 | 3.26E−03 | 4.30E−03 | 6.43E−03 | 3.36 | 0.68 |