Carbazolylphosphines and carbazolylphosphine oxides: facilely synthesized host materials with tunable mobilities and high triplet energy levels for blue phosphorescent OLEDs
作者:Zifeng Zhao、Gang Yu、Qiaowen Chang、Xiaochen Liu、Yang Liu、Liding Wang、Zhiwei Liu、Zuqiang Bian、Weiping Liu、Chunhui Huang
DOI:10.1039/c7tc01594a
日期:——
High triplet energy level (ET)and balanced carrier mobility are critical factors for host materials in efficient blue phosphorescent organic light-emitting diodes (PHOLEDs). Herein, we report the facile synthesis of four compounds, dicarbazolylphenylphosphine (DCPP), dicarbazolylphenylphosphine oxide (DCPPO), tricarbazolylphosphine (TCP), and tricarbazolylphosphine oxide (TCPO), and their application
高三重态能级(Ë Ť)和平衡的载流子迁移是用于基质材料中高效蓝色磷光有机发光二极管(PHOLED中)的关键因素。本文中,我们报道了四种化合物的简便合成,二咔唑基苯基膦(DCPP),二咔唑基苯基膦氧化物(DCPPO),三咔唑基膦(TCP)和三咔唑基膦氧化物(TCPO),以及它们作为经典蓝色磷光发射体bis [2-]的主体材料的应用。 (4,6-二氟苯基)吡啶基-C 2,N ](吡啶并)铱(III)(FIrpic)。四种化合物显示出高达3.0 eV的高E T和可调的电子迁移率。我们制造了四种具有ITO / MoO 3(1 nm)/简单结构的OLED。N,N'-二咔唑-3,5-苯(mCP):MoO 3(20 wt。%,10 nm)/ mCP(30 nm)/主体:FIrpic(7 wt。%,20 nm)/ 1,3 1,5-三(间-吡啶-3-基-苯基)苯(TmPyPB,40 nm)/ LiF(1 nm)/