| 초록 |
In this work, high triplet energy host materials, 9-([1,1':2',1''-terphenyl]-3-yl)-9H-carbazole (PC2-Ph) and 9-(2'-(pyridin-3-yl)-[1,1'-biphenyl]-3-yl)-9H-carbazole (PC2-Py), were synthesized as host materials for blue phosphorescent organic light emitting diodes(OLED). Phenyl and pyridine ring were coupled with biphenylcarbazole at ortho position to obtain high triplet energy. PC2-Ph and PC2-Py showed bipolar charge transport properties and maximum quantum efficiencies of 16.2% and 17.7% as blue PHOLED host materials. |
