Electric Field-Tuned Polymer Amplified Spontaneous Emission

被引：1

作者：

Li, Sheng ^{[1
,2
,3
,4
,5
,6
]}

Zhuang, Li-Qing ^{[1
]}

George, Thomas F. ^{[4
,5
,6
]}

机构：

[1] Zhejiang Normal Univ, Dept Phys, Hangzhou 321004, Zhejiang, Peoples R China

[2] Fudan Univ, State Key Lab Surface Phys, Shanghai 200433, Peoples R China

[3] Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China

[4] Univ Missouri, Off Chancellor, St Louis, MO 63121 USA

[5] Univ Missouri, Ctr Nanosci, Dept Chem & Biochem, St Louis, MO 63121 USA

[6] Univ Missouri, Ctr Nanosci, Dept Phys & Astron, St Louis, MO 63121 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2012年 / 159卷 / 03期

基金：

美国国家科学基金会;

关键词：

LIGHT-EMITTING-DIODES; CONJUGATED POLYMERS; CONDUCTING POLYMER; THIN-FILMS; LASERS; ELECTROLUMINESCENCE; LUMINESCENCE; EFFICIENCY; DYE;

D O I：

10.1149/2.001203jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

After an external laser pulse/beam is used to pump a conjugated polymer, such as poly(phenylene vinylene) (PPV), the continuous optical pumping reverses the electron populations in a polymer light-emitting diode, leading to amplified spontaneous emission (ASE). This is accompanied by localized lattice distortion along the polymer chain due to the excitation of a singlet exciton. With the application of an electric field along the polymer, the inversion of electron population is weakened. Once the strength of the applied electric field exceeds a certain threshold, it leads to the aberrance of the localization contributed by the excitation of exciton, which not only forbids the electron transition, but quenches the ASE. (C) 2011 The Electrochemical Society. [DOI: 10.1149/2.001203jes] All rights reserved.

引用

页码：P29 / P34

页数：6

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