| 초록 |
Six compounds introducing various side groups were designed and synthesized: 6,12-bis(30,50-diphenylphenyl)chrysene (TP-C-TP), 6-(30,50-diphenylphenyl)-12-(3,5-diphenylbiphenyl-400-yl)chrysene (TP-C-TPB) and 6,12-bis(300,500-diphenylbiphenyl-40-yl)chrysene (TPB-C-TPB), which contained bulky aromatic side groups; and N,N,N0 ,N0-tetraphenyl-chrysene-6,12-diamine (DPA-C-DPA), [12-(4-diphenylamino-phenyl)-chrysen-6-yl]-diphenylamine (DPA-C-TPA) and 6,12-bis[4-(diphenylamino)phenyl]chrysene (TPA-C-TPA), which contained aromatic amine groups, were designed to afford improved hole injection properties. The use of TP-C-TPB in a non-doped OLED device resulted in ultra-deep-blue emission with an EQE of 4.02% and Commission Internationale de L’Eclairage coordinates CIE x, y of (0.154, 0.042). The use of TPA-C-TPA, which includes an aromatic amine side group, afforded an excellent EQE of 4.83% and excellent color coordinates CIE x, y of (0.147, 0.077). |
