| Solvents
T (˚C) | Toluene | CB | THF |
| Eg (eV) | Eg (eV) | Eg (eV) | |
| 50 | 1.68 | 1.69 | 1.67 |
| 80 | 1.67 | 1.67 | 1.68 |
| 100 | 1.69 | 1.70 | 1.67 |
| 120 | 1.72 | 1.72 | 1.69 |
| 150 | 1.68 | 1.72 | 1.67 |