Tetraphenylsilane-Based High Triplet Energy Host Materials for Blue Phosphorescent Organic Light-Emitting Diodes

被引：45

作者：

Cho, Yong Joo ^{[1
]}

Lee, Jun Yeob ^{[1
]}

机构：

[1] Dankook Univ 126, Dept Polymer Sci & Engn, Yongin 448701, Gyeonggi, South Korea

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2011年 / 115卷 / 20期

关键词：

HIGH-EFFICIENCY; PHOSPHINE OXIDE; DEVICES; ELECTROPHOSPHORESCENCE; COMPLEXES; OLEDS;

D O I：

10.1021/jp201851e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A high triplet energy host material based on a tetraphenylsilane core, (4-((4-(9H-carbazol-9-yl)phenyl)diphenylsil)phenyl)-diphenylphosphine oxide (TSPC), was synthesized as the bipolar host material for blue phosphorescent organic light-emitting diodes (PHOLEDs). A diphenylphosphine oxide group and a carbazole group were attached to the tetraphenylsilane core to improve the hole and electron transport properties while keeping the high triplet energy of the core structure. TSPC was effective as the host material for blue PHOLEDs, achieving a high external quantum efficiency of 22.0% with a color coordinate of (0.14, 0.18).

引用

页码：10272 / 10276

页数：5

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