Peripheral Cyanohexyl Substituent in Wide Bandgap Polymer: Increase the Electron Injection Property for Blue Phosphorescence Light Emitting Device

被引：11

作者：

Hu, Dehua ^{[1
]}

Cheng, Gang ^{[2
]}

Lu, Ping ^{[1
]}

Liu, He ^{[1
]}

Shen, Fangzhong ^{[1
]}

Li, Fenghong ^{[1
]}

Lv, Ying ^{[1
]}

Dong, Wenyue ^{[1
]}

Ma, Yuguang ^{[1
]}

机构：

[1] Jilin Univ, State Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China

[2] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Peoples R China

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2011年 / 32卷 / 18期

基金：

美国国家科学基金会;

关键词：

cyano group; host; phorphosrescence; polymer; wide bandgap; HIGHLY EFFICIENT; TETRAPHENYLSILANE DERIVATIVES; CONJUGATED COPOLYMER; MAIN-CHAIN; HOST; ELECTROLUMINESCENCE; DIODES; OXADIAZOLE; FLUORENE; PENDANT;

D O I：

10.1002/marc.201100179

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Novel blue phosphor host, PCNCzSi, using 3,6-linked carbazole with delta-pi tetraphenylsilane segment as the main chain modified by peripheral cyanohexyl group was designed. The Si-carbazole backbone entitles the polymer with wide bandgap, high E-T and good hole transporting ability. The introduction of peripheral CN group with high electron affinity enhances the electron injecting property of the polymer revealed by electron-only device and UPS measurement. Highly efficient spin-coated phosphorescent polymer light-emitting device, using PCNCzSi as the host for blue iridium complex, FIrpic, was realized. The maximum luminous efficiency and maximum external quantum efficiency of the device were 15 cd/A and 6.7%, respectively, which are very high values for blue phosphorescent device using polymers as hosts as known.

引用

页码：1467 / 1471

页数：5

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