Analytical model for photoluminescence quenching via Forster resonant energy transfer in a conjugated polymer doped by energy acceptors

被引：18

作者：

Zapunidi, S. A. ^{[1
]}

Krylova, Yu. V.

Paraschuk, D. Yu.

机构：

[1] Moscow MV Lomonosov State Univ, Ctr Int Laser, Moscow 119991, Russia

来源：

PHYSICAL REVIEW B | 2009年 / 79卷 / 20期

关键词：

doping; excitons; optical polymers; photoluminescence; polymer blends; radiation quenching; spectral line intensity; PHOTOINDUCED ELECTRON-TRANSFER; LIGHT-EMITTING-DIODES; MEH-PPV FILMS; CHARGE PHOTOGENERATION; SOLAR-CELLS; MIGRATION; DYNAMICS; STATE; MORPHOLOGY; VINYLENE);

D O I：

10.1103/PhysRevB.79.205208

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An analytical model of quenching of steady-state photoluminescence (PL) via Forster resonant energy transfer (FRET) in blends of a conjugated polymer and low-molecular energy acceptors is presented. The normalized PL intensity as an analytical function of acceptor concentration is obtained in the case of homogeneous polymer-acceptor blend. This function has only two parameters depending on the Forster radii of energy transfer between the polymer conjugated segments (intrapolymer) and between a conjugated segment and an energy acceptor. The intrapolymer exciton migration can enhance PL quenching up to 60% as derived as an asymptote of the model. The model excellently fits the experimental data on quenching of soluble polyphenylenevinylene PL in blends with trinitrofluorenone.

引用

页数：10

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