Table 2. Parameters Used to Construct the VRBE Diagram for RE2O2S with U = 6.37 eVa.
| sample | Eex | ECT(Eu3+) | ECT(Ti4+) | EV | EC | ETb3+ | EPr3+ |
|---|---|---|---|---|---|---|---|
| La2O2S | 4.57 | 3.61 | 3.79 | –7.38 | –2.44 | –6.57 | –6.75 |
| Gd2O2S | 4.66 | 3.72 | 3.65 | –7.49 | –2.46 | –6.57 | –6.75 |
| Y2O2S | 4.67 | 3.75 | 3.53 | –7.52 | –2.48 | –6.57 | –6.75 |
| Lu2O2S | 4.66 | 3.77 | 3.44 | –7.54 | –2.51 | –6.57 | –6.75 |
All numbers are in eV.