Table 1.
HOMO and LUMO levels of PCBM changed by electron irradiation as a function of electron fluence
| Ep, red(1) | Eon, red (1) | LUMO | Ep, ox | Eon, ox | HOMO | |
|---|---|---|---|---|---|---|
| PCBM | -1.11 | -0.98 | -3.70 | 1.76 | 1.50 | -6.18 |
| PCBM (3.6 × 1016 cm-2) | -1.22 | -1.09 | -3.59 | 1.79 | 1.55 | -6.23 |
| PCBM (7.2 × 1016 cm-2) | -1.41 | -1.18 | -3.50 | 1.86 | 1.56 | -6.24 |
| PCBM (1.44 × 1017 cm-2) | -1.49 | -1.28 | -3.40 | 1.94 | 1.57 | -6.25 |
The first reduction and oxidation peak potentials (voltage vs. Ag/Ag+), onset potentials, and LUMO and HOMO level (electron volts) of electron-irradiated PCBM at different fluences.