De Novo Design of Silicon-Bridged Molecule Towards a Bipolar Host: All-Phosphor White Organic Light-Emitting Devices Exhibiting High Efficiency and Low Efficiency Roll-Off

被引：141
作者：
Gong, Shaolong [1 ]
Chen, Yonghua [2 ]
Yang, Chuluo [1 ]
Zhong, Cheng [1 ]
Qin, Jingui [1 ]
Ma, Dongge [2 ]
机构：
[1] Wuhan Univ, Hubei Key Lab Organ & Polymer Optoelect Mat, Dept Chem, Wuhan 430072, Peoples R China
[2] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
来源：
ADVANCED MATERIALS | 2010年 / 22卷 / 47期
基金：
中国国家自然科学基金;
关键词：
ELECTROPHOSPHORESCENT DEVICES; BLUE; GREEN; OLEDS; DIODES; TRIPHENYLAMINE; HYBRID; LAYER; LEDS;
D O I：
10.1002/adma.201002732
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A molecular design strategy for a bipolar host material is demonstrated by incorporating both electron donor and electron acceptor into a silicon-bridged structure. A two-color, all phosphor and single-emitting-layer white OLED hosted by the new bipolar compound p-BISiTPA is fabricated. The device displays a high efficiency, with eta(c, max) of 51.8 cd A(-1) eta(p, max) of 42.7 lm W-1 and eta(ext, max) of 19.1%. Furthermore, the eta(ext) is still as high as 17.4% at the luminance of 1000 cd m(-2), with a rather low roll-off value of 8.9%.
引用
收藏
页码：5370 / +
页数：5
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