Synthesis, characterization, and electroluminescence properties of a donor-acceptor type molecule for highly efficient non-doped green organic light-emitting diodes

被引：22

作者：

Ahn, Soyeong ^{[1
]}

Cha, Yong-Bum ^{[2
]}

Kim, Mansu ^{[1
]}

Ahn, Kwang-Hyun ^{[2
]}

Kim, Young Chul ^{[1
]}

机构：

[1] Kyung Hee Univ, Dept Chem Engn, Yongin 446701, Gyeonggi Do, South Korea

[2] Kyung Hee Univ, Dept Appl Chem, Yongin 446701, Gyeonggi Do, South Korea

来源：

SYNTHETIC METALS | 2015年 / 199卷

基金：

新加坡国家研究基金会;

关键词：

Donor-acceptor molecules; Intramolecular charge transfer (ICT); Phenylphenothiazine; Biphenylbenzimidazole; Organic light-emitting diodes; ELECTROCHEMICAL PROPERTIES; BLUE; PHENOTHIAZINE; EMISSION; DEVICES; FLUORESCENCE; PHOTOPHYSICS; TRANSPORT; STRENGTH; LAYER;

D O I：

10.1016/j.synthmet.2014.11.005

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We synthesized a new donor-acceptor type (D-A type) green fluorescent emitter, 3,7-bis(1-(biphenyl-4-yl)-1H-benzo[d]imidazole-2-yl)-10-phenyl-10H-phenothiazine (PhBBPP), which consists of phenylphenothiazine as an electron donor and biphenylbenzimidazole as an acceptor. Its thermal and photophysical properties, and energy band structure were studied, and also organic light-emitting diodes (OLEDs) with various device structures were fabricated using PhBBPP as an emitting layer. The optimized OLED device with a structure of [ITO/NPB (40 nm)/PhBBPP (30 nm)/TPBi (30 nm)/Alq3 (10 nm)/LiF (1 nm)/ Al (100 nm)] showed a turn-on voltage of 3.4V, a luminous efficiency of 12.1 cd/A, and an external quantum efficiency of 4.0% at 100 cd/m(2) with a maximum luminance of 8200 cd/m(2). (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：8 / 13

页数：6

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