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| Material | Ionization energy level (monolayer), eV ± 0.03 eV | Ionization energy level (film), eV ± 0.03 eV | Electron affinity (film), eV ± 0.05 eV | Energy gap, eV ± 0.03 eV |
|---|---|---|---|---|
| 2 | 5.70 | 6.35 | 2.45 | 3.90 |
| 4 | 5.61 | 6.44 | 2.72 | 3.72 |
| 7 | 5.65 | 6.34 | 2.51 | 3.83 |
| 11 | 5.99 | 5.96 | 2.33 | 3.63 |
