CN-carbazole modified diphenylsilane-type high triplet energy hosts for blue phosphorescent organic light-emitting diodes

被引：5
|
作者：
Yun, Ju Hui [1 ]
Han, Si Hyun [1 ]
Lee, Jun Yeob [1 ]
机构：
[1] Sungkyunkwan Univ, Sch Chem Engn, 2066 Seobu Ro, Suwon 440746, Gyeonggi Do, South Korea
来源：
ORGANIC ELECTRONICS | 2018年 / 62卷
基金：
新加坡国家研究基金会;
关键词：
Host; Blue device; Phosphorescent device; Organic light-emitting diodes; Efficiency; EXTERNAL QUANTUM EFFICIENCY; LOW-DRIVING-VOLTAGE; ELECTROPHOSPHORESCENT DEVICES; ROLL-OFF; 30-PERCENT; DERIVATIVES; DOPANT; OLEDS;
D O I：
10.1016/j.orgel.2018.08.028
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Diphenylsilane-derived high triplet energy host materials were developed by coupling diphenylsilane with CN-modified carbazoles. Two host materials with two CN-modified carbazoles or one CN-modified carbazole were synthesized, and their photophysical and device behavior were investigated. The host materials delivered a high triplet energy over 3.00 eV, a high glass transition temperature over 130 degrees C, ambipolar charge transport, and high external quantum efficiency over 20% as hosts of deep blue-emitting Ir emitters.
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页码：342 / 350
页数：9
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