| 초록 |
We synthesized 3,3-bicarbazole derivatives as host material for high-efficiency blue phosphorescent organic light emitting diodes. The 3,3-bicarbazole moiety derived compounds showed high current density and good charge transport property, due to C-C covalent bonding between carbazole units and molecular packing, respectively. Furthermore it has high triplet energy above 2.8eV that is suitable for blue phosphorescent organic light emitting diodes. Therefore, we successfully synthesized 3,3-bicarbazole derivative host materials which showed good thermal stability and device performances. |
