| 초록 |
A series of new host materials with carbazolylcarbazole and dibenzothiophene groups were synthesized for blue phosphorescent organic light-emitting diodes (PHOLEDs). Especially, we applied biphenyl linker to understand the effect of aromatic linkers on photophysicals properties as well as the device performances of a blue emitting Ir(dbi)3phosphorescent dopant for comparison with the properties of 1,3-bis(N-carbazolyl)benzene (mCBP). As a result, those materials worked as efficiency and long lifetime host materials for blue PhOLEDs and prolonged the lifetime by more than fivefold compared with that of mCBP. |
