Radical-Based Organic Light-Emitting Diodes with Maximum External Quantum Efficiency of 10.6%

被引：39

作者：

Cui, Zhiyuan ^{[1
]}

Ye, Shaofeng ^{[2
]}

Wang, Lu ^{[1
]}

Guo, Hanqing ^{[1
]}

Obolda, Ablikim ^{[1
]}

Dong, Shengzhi ^{[1
]}

Chen, Yingxin ^{[1
]}

Ai, Xin ^{[1
]}

Abdurahman, Alim ^{[1
]}

Zhang, Ming ^{[1
]}

Wang, Lei ^{[2
]}

Li, Feng ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, State Key Lab Supramol Struct & Mat, Qianjin Ave 2699, Changchun 130012, Jilin, Peoples R China

[2] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2018年 / 9卷 / 22期

基金：

中国国家自然科学基金;

关键词：

CARBAZOLE; MAGNETISM; EMISSION; ADDUCTS; POLYMER; SINGLE; CHARGE; RATIO;

D O I：

10.1021/acs.jpclett.8b03019

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 new luminescent radical, tris-2,4,6-trichlorophenylmethy1-1,5-diazarcarbazole (TTM-DACz), was synthesized and characterized. The photoluminescence quantum yield of TTM-DACz in solid 1,3,5-tris(1-phenyl-1H-benzimidazol-2-yl)benzene matrix film (5 wt %) is as high as 57.0%. Organic light-emitting diodes (OLEDs) employing TTM-DACz as the emitter were fabricated. By rational design of the device structure and host guest doping system, external quantum efficiency (EQE) of up to 10.6% of the optimized device with a red CIE chromaticity of (0.62, 0.36) was obtained, which is among the highest values for red OLEDs using nonphosphorescent materials as the emitters. This work will accelerate the development of luminescent radical materials for high-performance OLEDs.

引用

页码：6644 / 6648

页数：9

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