| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1440478 | Synthetic Metals | 2015 | 6 Pages |
•A series of carbazole containing DCN were synthesized as potential OLED dopants.•DCN3 displayed a clear delayed fluorescence component with a lifetime of 3.26 μs.•A twisted structure between donor and acceptor may facilitate a long lifetime.•OLED device of DCN3 showed excellent device performances with PE of 15.26 Cd/A.•It shows the maximum EQE of 13.33%, and brightness of 1526 Cd/m2.
Dicyanophenyl derivatives, DCN1–3, were rationally synthesized and their thermally activated delayed fluorescence properties were investigated. OLED devices were further fabricated using DCN1–3. Particularly DCN3 (5-{3,6-di(9H-carbazole-9-yl)-9H-carbazol-9-yl}isophthalonitrile) showed excellent device performances employing TADF mechanism with power efficiency of 15.26Cd/A, luminous efficiency of 8.14 lm/W, the maximum external quantum efficiency of 13.33%, and brightness of 1526 Cd/m2.
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