Novel heterofluorene-based hosts for highly efficient blue electrophosphorescence at low operating voltages

被引：30

作者：

Chen, Run-Feng ^{[2
]}

Xie, Guo-Hua ^{[1
]}

Zhao, Yi ^{[1
]}

Zhang, Sheng-Lan ^{[2
]}

Yin, Jun ^{[2
]}

Liu, Shi-Yong ^{[1
]}

Huang, Wei ^{[2
]}

机构：

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

[2] NUPT, IAM, Key Lab Organ Elect & Informat Displays KOLED, Nanjing 210046, Peoples R China

来源：

ORGANIC ELECTRONICS | 2011年 / 12卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Organic light-emitting diodes; Host material; Heterofluorene; LIGHT-EMITTING-DIODES; OPTOELECTRONIC PROPERTIES; CONJUGATED COPOLYMER; TRANSPORT; POLYMER; PERFORMANCE; GAP;

D O I：

10.1016/j.orgel.2011.05.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel concept for molecular design of blue host materials for phosphorescent OLEDs (PHOLEDs) by combining carbazole and heterofluorene via structurally mimicking 4,4'-N,N'-dicarbazole-biphenyl (CBP) was presented. The carbazole end-capped heterofluorenes (CzHFs) prepared accordingly in high yields, were found to be ideal hosts for blue PHOLEDs. At the brightness level of 1000 and 5000 cd m (2), the driving voltages are still lower than 4.5 V with the external quantum efficiencies retain as high as 18.1% and 16.8% respectively. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.

引用

页码：1619 / 1624

页数：6

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