A host material consisting of phosphinic amide for efficient sky-blue phosphorescent organic light-emitting diodes

被引:5
作者
Wu, Fu-Peng
Xie, Yue-Min
Cui, Lin-Song
Liu, Xiang-Yang
Li, Qian
Jiang, Zuo-Quan [1 ]
Liao, Liang-Sheng
机构
[1] Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Peoples R China
关键词
Bipolar host material; Phosphinic amide; Resonance effect; Phosphorescence; Organic light-emitting diodes; BIPOLAR HOST; TRIPLET ENERGY; RED ELECTROPHOSPHORESCENCE; OXIDE HOST; CARBAZOLE; DEVICES; GREEN; DERIVATIVES; FLUORENE; DESIGN;
D O I
10.1016/j.synthmet.2015.03.023
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
A new bipolar host material (PBCz-PO) consisting a phosphinic amide is developed to show a resonance effect. It possesses quite high triplet energy (2.76 eV), and this high triplet energy make it suitable to be blue host in phosphorescent organic light-emitting diodes (PHOLEDs). The device with PBCz-PO as a host and Firpic as a dopant achieved a maximum current efficiency (eta(c)) of 31.5 cd/A, a maximum power efficiency (eta(p)) of 31.0 Im/W and a maximum external quantum efficiency (EQE) of 13.4% as well as low driving voltage. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:11 / 17
页数:7
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