Optical and thermal properties and device performances of Cz-DPVI, Cz-DMPVI, Cz-DEPVI and TPA-DEPVI.
| Emitters | Cz-DPVI | Cz-DMPVI | Cz-DEPVI | TPA-DEPVI |
|---|---|---|---|---|
| λ ab (nm) (sol/film) | 252, 320, 356/323, 360 | 254, 328, 360/330, 364 | 260, 331, 366/334, 372 | 255, 332, 368/335, 370 |
| λ em (nm) (sol/film) | 390, 408/412, 420 | 399, 415/420, 432 | 401, 428/410, 440 | 409, 432/415, 449 |
| T g/Td5 (°C) | 163/521 | 174/546 | 195/566 | 190/558 |
| ϕ (soln/film) | 0.76/0.83 | 0.80/0.89 | 0.82/0.91 | 0.78/0.86 |
| HOMO/LUMO (eV) | −5.60/−2.58 | −5.59/−2.61 | −5.46/−2.70 | −5.50/−2.65 |
| E g (eV) | 3.02 | 2.93 | 2.76 | 2.85 |
| E S/ET (eV) | 2.62/2.34 | 2.74/2.40 | 2.88/2.49 | 2.80/2.46 |
| τ (ns) | 1.83 | 1.92 | 2.32 | 2.10 |
| k r × 108 (s−1) | 4.15 | 4.17 | 3.53 | 3.71 |
| k nr × 108 (s−1) | 1.31 | 1.03 | 0.78 | 1.05 |
| V 1000 (V) | 3.4 | 3.2 | 2.8 | 2.9 |
| L (cd m−2) | 13 629 | 13 841 | 13 955 | 13 856 |
| η ex (%) | 4.6 | 4.9 | 6.9 | 5.7 |
| η c (cd A−1) | 4.9 | 5.4 | 6.0 | 5.7 |
| η p (lm W−1) | 4.3 | 5.0 | 5.4 | 5.2 |
| CIE (x, y) | 0.15, 0.08 | 0.15, 0.08 | 0.15, 0.06 | 0.15, 0.07 |
| EL (nm) | 419 | 430 | 439 | 442 |
| η IOE (%)a | 22.0 | 23.0 | 24.5 | 23.5 |
| η S | 26.5 | 25.8 | 26.9 | 27.3 |