Highly efficient undoped deep-blue electroluminescent device based on a novel pyrene derivative

被引：13

作者：

Wang, Zhiqiang ^{[1
]}

Xu, Chen ^{[1
]}

Wang, Weizhou ^{[1
]}

Fu, Weijun ^{[1
]}

Niu, Lianbin ^{[2
]}

Ji, Baoming ^{[1
]}

机构：

[1] Luoyang Normal Univ, Coll Chem & Chem Engn, Luoyang 471022, Peoples R China

[2] Chongqing Normal Univ, Coll Phys & Informat Technol, Chongqing 400047, Peoples R China

来源：

SOLID-STATE ELECTRONICS | 2010年 / 54卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Pyrene derivative; Deep-blue emission; Organic light emitting diodes; Electronic structure; LIGHT-EMITTING-DIODES; DEGRADATION MECHANISM; AGGREGATION; EMITTERS;

D O I：

10.1016/j.sse.2010.01.021

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel pyrene derivative 1,6-bis(9,9-dimethylfluorenyl)pyrene (DFP) was synthesized and characterized by H-1 NMR spectrum, high resolution mass spectrum and elemental analysis. DEP exhibits bright blue emission both in solution and in solid thin film. Theoretical calculations show that the material has a non-coplanar structure and a high HOMO energy level. The undoped device based on DEP shows a stable deep-blue emission at 456 nm under different voltage (up to 10 V). The 1931 CIE coordinates (x = 0.15, y = 0.12) of the device are very close to the National Television Standards Committee's (NTSC) blue standard. The device achieves a maximum external quantum efficiency of 4.3% (current efficiency of 3.06 cd A(-1)) at 19.8 mA cm(-2) with a luminance of 607 cd m(-2). (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：524 / 526

页数：3

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