A novel luminophor and host polymer from fluorene-carbazole derivatives for preparing solution-processed non-doped blue and closed-white light devices
作者:Jing Sun、Tiaomei Zhang、Xiaoqing Liao、Kexiang Wang、Minna Hou、Dongyu Wu、Yanqin Miao、Hua Wang、Bingshe Xu
DOI:10.1016/j.tet.2018.01.028
日期:2018.3
prepared by solution process to characterize the electroluminescent (EL) properties of PF2Cz. In non-doped devices, PF2Cz acted as blue emitter which exhibited a Commission Internation de L'Eclairage (CIE) coordinate of (0.164, 0.102) and a external quantum efficiency (EQE) values of 1.28%. Moreover, the doped phosphorescent devices utilized PF2Cz as host material obtained a closed-white light emission
设计和合成了一种新型的蓝色发光聚合物,该聚合物是通过共轭的9,9-二辛基芴和9-(6-(9H-咔唑-9-基)己基)-9H-咔唑合成的,并命名为PF2Cz。它在膜中的408和429 nm处表现出高的热稳定性,良好的膜形态和深蓝色发射峰。PF2Cz的三重态能级(E T = 2.30 eV)也得到了改善。非掺杂和掺杂器件均通过溶液法制备,以表征PF2Cz的电致发光(EL)特性。在未掺杂的器件中,PF2Cz用作蓝色发射器,其国际照明委员会(CIE)坐标为(0.164,0.102),外部量子效率(EQE)值为1.28%。此外,利用PF 2 C 2作为主体材料的掺杂磷光器件获得了掺杂剂含量为1重量%的封闭白光发射。所有这些结果表明,芴-咔唑衍生物可能是合成蓝光和主体有机半导体的一种有前途的分子设计策略。