Delayed electroluminescence via triplet-triplet annihilation in light emitting diodes based on poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene]

被引：44

作者：

Sinha, S ^{[1
]}

Monkman, AP ^{[1
]}

机构：

[1] Univ Durham, Dept Phys, Organ Electroact Mat Res Grp, Durham DH1 3LE, England

来源：

APPLIED PHYSICS LETTERS | 2003年 / 82卷 / 26期

关键词：

D O I：

10.1063/1.1588733

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A spectroscopically resolved delayed electrofluorescence is observed from poly[2-methoxy-5-(2(')-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) thin film at low temperature. From the measurements of the delayed fluorescence intensities at a particular delay time as well as the decay kinetics of the delayed fluorescence spectra at different temperatures, we conclude that the delayed fluorescence is generated via triplet-triplet annihilation. It is suggested that the triplet state of MEH-PPV thin film has a lifetime much shorter than that of polyfluorene thin film, which is consistent with the triplet energies of these polymers. (C) 2003 American Institute of Physics.

引用

页码：4651 / 4653

页数：3

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