Phenothiazine dioxide based high triplet energy host materials for blue phosphorescent organic light-emitting diodes
作者:In Ho Lee、Jun Yeob Lee
DOI:10.1039/c5ra19722h
日期:——
Donor–acceptor type high triplet energy host materials were derived from a phenothiazine dioxide based electron transport moiety and a carbazole based hole transport moiety. Three phenothiazine dioxide type materials, 10-(3,5-di(9H-carbazol-9-yl)phenyl)-10H-phenothiazine 5,5-dioxide (DCzPO), 10-(3′,5′-di(9H-carbazol-9-yl)-[1,1′-biphenyl]-3-yl)-10H-phenothiazine 5,5-dioxide (DCzmPPO), and 10-(3′,5′
供体-受体型高三重态能量主体材料来自基于吩噻二嗪的电子传输部分和基于咔唑的空穴传输部分。三种二氧化吩噻嗪类材料,10-(3,5-二(9 H-咔唑-9-基)苯基)-10 H-吩噻嗪5,5-二氧化物(DCzPO),10-(3',5'-di (9 H-咔唑-9-基)-[1,1'-联苯] -3-基)-10 H-吩噻嗪5,5-二氧化物(DCzmPPO)和10-(3',5'-di( 9 H-咔唑-9-基)-[1,1'-联苯] -4-基)-10 H-吩噻嗪5,5-二氧化物(DCzpPPO),可以有效地传输空穴和电子,并显示出高三重态能量,可用于蓝色磷光有机发光二极管。基于DCzPO,DCzmPPO和DCzpPPO主机的蓝色设备的设备优化可以实现24.3%的高EQE。