Table 1.
Summary of performances of studied top emitting OLEDs. (at 103 cd/m2).
| Mixing ratio (wt%) of Device series I, II, III | Operating Voltage (V) | Current density (mA/cm2) | Current efficiency (cd/A) | Power efficiency (lm/W) | EQE (%) | CIE x | CIE y | Roll-off (%) | t95 (hrs) |
|---|---|---|---|---|---|---|---|---|---|
| PTZP-PCZ:DP-BCZ | |||||||||
| 2:8 | 5.7 | 18.8 | 47.8 | 26.2 | 11.4 | 0.283 | 0.684 | 0% | 165 |
| 3:7 | 5.2 | 13.2 | 68.4 | 41.6 | 16.5 | 0.259 | 0.699 | 2% | 469 |
| 4:6 | 4.7 | 9.3 | 96.8 | 64.4 | 23.1 | 0.261 | 0.699 | 8% | 739 |
| 5:5 | 4.7 | 8.7 | 103.0 | 68.4 | 24.7 | 0.252 | 0.705 | 5% | 365 |
| 6:4 | 4.8 | 8.6 | 105.1 | 69.5 | 25.0 | 0.255 | 0.703 | 15% | 263 |
| 7:3 | 4.7 | 9.0 | 100.2 | 67.4 | 24.2 | 0.242 | 0.710 | 17% | 206 |
| 8:2 | 4.8 | 9.4 | 96.2 | 62.9 | 23.2 | 0.242 | 0.711 | 21% | 182 |
| 10:0 | 5.3 | 11.4 | 79.1 | 46.5 | 18.7 | 0.252 | 0.706 | 34% | 98 |
| PTZP-BCZ:BPP-BCZ | |||||||||
| 2:8 | 5.7 | 20.0 | 45.0 | 24.6 | 11.0 | 0.271 | 0.693 | 25% | 80 |
| 3:7 | 5.0 | 12.4 | 72.4 | 45.1 | 17.4 | 0.262 | 0.700 | 8% | 281 |
| 4:6 | 4.7 | 10.2 | 88.2 | 59.3 | 21.5 | 0.239 | 0.712 | 13% | 453 |
| 5:5 | 4.6 | 9.7 | 93.1 | 64.1 | 22.8 | 0.232 | 0.717 | 14% | 440 |
| 6:4 | 4.8 | 10.3 | 87.5 | 57.5 | 22.0 | 0.216 | 0.723 | 18% | 284 |
| 7:3 | 4.7 | 10.5 | 86.1 | 57.7 | 21.7 | 0.211 | 0.725 | 19% | 145 |
| 8:2 | 4.8 | 10.8 | 83.0 | 54.1 | 21.2 | 0.208 | 0.726 | 20% | 80 |
| 10:0 | 5.2 | 10.6 | 70.8 | 42.4 | 17.7 | 0.209 | 0.727 | 20% | 41 |
| BTPP-PCZ:BPP-BCZ | |||||||||
| 2:8 | 5.9 | 21.8 | 45.9 | 24.4 | 10.9 | 0.310 | 0.664 | 2% | 92 |
| 3:7 | 5.3 | 15.1 | 66.1 | 39.3 | 15.7 | 0.293 | 0.677 | 6% | 291 |
| 4:6 | 5.0 | 12.4 | 80.9 | 51.2 | 19.3 | 0.281 | 0.685 | 12% | 437 |
| 5:5 | 4.8 | 11.3 | 88.7 | 57.9 | 21.1 | 0.279 | 0.687 | 14% | 531 |
| 6:4 | 4.7 | 11.6 | 86.6 | 57.6 | 21.0 | 0.259 | 0.699 | 17% | 473 |
| 7:3 | 4.8 | 12.1 | 82.8 | 54.8 | 20.0 | 0.260 | 0.698 | 22% | 353 |
| 8:2 | 4.8 | 13.0 | 76.8 | 50.1 | 18.6 | 0.256 | 0.701 | 28% | 273 |
| 10:0 | 5.1 | 15.3 | 65.3 | 40.5 | 15.8 | 0.253 | 0.703 | 41% | 90 |