Table 1 Summary of the calculated energy gaps.
From: Pressure-controlled luminescence in fast-response barium fluoride crystals
Pressure (GPa) | Crystal phase | Ev−c (eV) | Ec−v (eV) | Ec−c (eV) | ΔEv (eV) |
|---|---|---|---|---|---|
0.1 | Cubic | 7.044 (indirect) | 5.947 (indirect) | 14.544 (indirect) | 1.56 |
0.6 | Cubic | 7.145 (indirect) | 5.763 (indirect) | 14.533 (indirect) | 1.60 |
1.4 | Cubic | 7.086 (indirect) | 5.872 (indirect) | 14.539 (indirect) | 1.61 |
2.0 | Cubic | 7.123 (indirect) | 5.803 (indirect) | 14.534 (indirect) | 1.65 |
3.7 | Cubic | 7.143 (indirect) | 5.632 (indirect) | 14.451 (indirect) | 1.67 |
3.7 | Orthorhombic | 7.280 (direct) | 5.372 (indirect) | 14.761 (indirect) | 2.11 |
4.5 | Orthorhombic | 7.334 (direct) | 4.992 (indirect) | 14.597 (indirect) | 2.27 |
5.0 | Orthorhombic | 7.322 (indirect) | 5.124 (indirect) | 14.657 (indirect) | 2.21 |
6.4 | Orthorhombic | 7.336 (indirect) | 5.149 (indirect) | 14.698 (indirect) | 2.21 |
7.3 | Orthorhombic | 7.428 (indirect) | 4.848 (indirect) | 14.668 (indirect) | 2.39 |
8.7 | Orthorhombic | 7.478 (indirect) | 4.613 (indirect) | 14.639 (indirect) | 2.55 |
