Silane coupling di-carbazoles with high triplet energy as host materials for highly efficient blue phosphorescent devices

被引：63

作者：

Hu, Dehua ^{[1
]}

Lu, Ping ^{[1
]}

Wang, Chunlei ^{[1
]}

Liu, He ^{[1
]}

Wang, Huan ^{[1
]}

Wang, Zhiming ^{[1
]}

Fei, Teng ^{[1
]}

Gu, Xin ^{[1
]}

Ma, Yuguang ^{[1
]}

机构：

[1] Jilin Univ, State Key Lab Supramol Struct & Mat, Changchun, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2009年 / 19卷 / 34期

基金：

美国国家科学基金会;

关键词：

LIGHT-EMITTING-DIODES; ORGANIC ELECTROLUMINESCENT DEVICES; ELECTROPHOSPHORESCENT DEVICES; CONJUGATED POLYMERS; COMPLEXES; EMISSION; GREEN; MOLECULES; FLUORENE; EMITTERS;

D O I：

10.1039/b906782e

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：

We report the synthesis and characterization of two high triplet energy compounds bis(4-(9-carbazolyl)phenyl)dimethylsilane (DMSiCBP) and bis(4-(9-carbazolyl) phenyl)diphenylsilane (DPSiCBP), which can be used as the host materials for blue phosphorescent devices. Triplet energy of both DMSiCBP and DPSiCBP arrive at a level of 3.0 eV, which is significantly higher than the commonly used host materials for blue phosphorescence, such as CBP(2.6 eV) and mCP(2.9 eV). The DPSiCBP is fully-amorphous with a higher glass transition temperature of 120 degrees C, and excellent morphologically stability based on DSC analysis and annealing atomic force microscopy (AFM) investigation. The phosphorescent EL devices, employing DPSiCBP doped with blue iridium complex Firpic as the emitting layer, show the maximum brightness of 12130 cd/m(2) and maximum luminous efficiency of 6.5 cd/A, which is superior to those of CBP-based devices.

引用

页码：6143 / 6148

页数：6

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