Universal polymeric bipolar hosts for highly efficient solution-processable blue and green thermally activated delayed fluorescence OLEDs
作者:Jinhyo Hwang、Chae Yeong Kim、Hyunchul Kang、Ji-Eun Jeong、Han Young Woo、Min Ju Cho、Sungnam Park、Dong Hoon Choi
DOI:10.1039/d0tc04366d
日期:——
exhibited high triplet energies (T1 = 3.04 eV for P(NmCP) and 3.05 eV for P(mCP)), which were sufficiently high to realize blue and green TADF-OLEDs. In brief, solution-processed OLEDs with an emissive layer bearing P(NmCP) as a bipolar electron host exhibited remarkable performance with a maximum current efficiency (CE), power efficiency (PE), and external quantum efficiency (EQE) of 70.36 cd A−1, 63.15 lm
在这项研究中,合成了两种聚合物主体材料P(NmCP)和P(mCP),并获得了高性能的天蓝色和绿色热激活延迟荧光有机发光二极管(TADF-OLED)。简单的结构聚合物主体是通过将一个吡啶基团成的核心设计的P(NMCP)和给电子基苯基成的芯P(MCP) 。所述两种聚合物的主机显示出高三重态能量(Ť 1 = 3.04电子伏特为P(NMCP)和3.05电子伏特为P(MCP) ),这是足够高以实现蓝色和绿色TADF-的OLED。简而言之,溶液处理的OLED的发光层带有P(NmCP)作为双极电子宿主表现出显着的性能与70.36 CD A的最大电流效率(CE),功率效率(PE),和外部量子效率(EQE)-1,63.15流明w ^ -1,和20.07%,分别在绿色发射装置。在蓝色发射器件中,我们获得了最大CE,PE,和27.13光盘的EQE -1,22.30流明w ^ -1分别和10.70%。具有如此高的T