Table 1.
Summary of CsPbCl0.9Br2.1 perovskite LEDs with different ratios of PEABr
| PEABr ratio | VT (V) | EL peak (nm) | Max. L. (cd m−2) | Max. CE (cd A−1) | Max. EQE (%) | FWHM (nm) | CIE |
|---|---|---|---|---|---|---|---|
| 0% | 3.5 | 487 | 177 | 0.07 | 0.05 | 20 | (0.112,0.289) |
| 40% | 3.5 | 485 | 293 | 0.12 | 0.10 | 23 | (0.105,0.254) |
| 60% | 3.3 | 484 | 892 | 0.52 | 0.46 | 21 | (0.093,0.222) |
| 80% | 3.2 | 483 | 1278 | 1.43 | 1.25 | 21 | (0.096,0.204) |
| 100% | 3.1 | 480 | 965 | 3.90 | 3.60 | 21 | (0.101,0.155) |
| 120% | 3.3 | 478 | 304 | 2.69 | 2.88 | 24 | (0.113,0.149) |
LED light-emitting diode, PEABr phenylethylammonium bromide, VT turn-on voltage, CE current efficiency, EQE external quantum efficiency, FWHM full-width at half-maximum, CIE Commission Internationale de l’Eclairage