Effect of electric field on the photoluminescence of polymer-inorganic nanoparticle composites

被引：18

作者：

Aleshin, Andrey N. ^{[1
]}

Shcherbakov, Igor P. ^{[1
]}

Alexandrova, Elena L. ^{[1
]}

Lebedev, Energue A. ^{[1
]}

机构：

[1] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

来源：

SOLID STATE COMMUNICATIONS | 2008年 / 146卷 / 3-4期

基金：

俄罗斯基础研究基金会;

关键词：

polymers; elastomers; and plastics; thin films; optical properties; tunnelling;

D O I：

10.1016/j.ssc.2008.01.040

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on the effect of electric field on the photoluminescence (PL) from a composite consisting of a BEHP-co-MEH-PPV conjugated polymer mixed with ZnO nanoparticles. We have found that in the absence of electric field PL emission from the BEHP-co-MEH-PPV-ZnO composite has two maxima in the blue and green-yellow regions. Application of a voltage bias to planar gold electrodes suppresses the green yellow emission and shifts the only PL emission maximum towards the blue region. Current-voltage characteristics of the BEHP-co-MEH-PPV-ZnO composite exhibit the nonlinear behaviour typical of nonhomogeneous polymer-inorganic structures. Generation of excited states in the BEHP-co-MEH-PPV-ZnO structure implies the presence of several radiative recombination mechanisms including formation of polymer-nanoparticle complexes including "exciplex" states and charge transfer between the polymer and nanoparticle that can be controlled by an electric field. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：161 / 165

页数：5

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