| Polarization | Activation Energy | |
| Shallowtraps (77 K < T< 160 K) | Deeptraps (200 K < T< 300 K) | |
| 0 V | 23 ± 4 meV | 0.28 ± 0.06 eV |
| −1 V | 66 ± 16 meV | 0.21 ± 0.02 eV |
| −2 V | 55 ± 5 meV | 0.21 ± 0.02 eV |
| −3 V | 35 ± 6 meV | 0.17 ± 0.02 eV |
| −4 V | 33 ± 5 meV | 0.15 ± 0.02 eV |