Tunable electroluminescent color for 2,5-diphenyl-1,4-distyrylbenzene with two trans-double bonds

被引：20

作者：

Cheng, G ^{[1
]}

Zhang, YF

Zhao, Y

Liu, SY

Xie, ZQ

Xia, H

Hanif, M

Ma, YG

机构：

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

[2] Jilin Univ, Minist Educ, Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2005年 / 87卷 / 01期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.1994950

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Exciplex emission is observed in electroluminescent (EL) spectrum of an organic light-emitting device (OLED), where 2, 5-diphenyl -1, 4-distyrylbenzene with two trans-double bonds (trans-DPDSB), (8-hydroxyquinoline) aluminum, and N,N'-diphenyl-N,N'-bis(1-naphthyl)-(1,1'-biphenyl)-4,4'-diamine (NPB) are used as light-emitting, electron-transporting, and hole-transporting layers, respectively. This emission can be dramatically weakened by inserting a hole-injecting layer of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonic acid) between the hole-transporting layer and the anode. Consequently, EL color of this OLED is tuned from white to blue. This phenomenon may result from the improvement of hole injection, which shifts the major recombination zone from the NPB/trans-DPDSB interface to the trans-DPDSB layer. (c) 2005 American Institute of Physics.

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页数：3

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