Current-induced fluorescence quenching in organic light-emitting diodes

被引：150

作者：

Young, RH ^{[1
]}

Tang, CW

Marchetti, AP

机构：

[1] Univ Rochester, Dept Chem, Rochester, NY 14627 USA

[2] Eastman Kodak Co, Elect Imaging Prod, Res & Dev, Rochester, NY 14650 USA

[3] Eastman Kodak Co, Res & Dev, Imaging Mat & Media, Rochester, NY 14652 USA

来源：

APPLIED PHYSICS LETTERS | 2002年 / 80卷 / 05期

关键词：

D O I：

10.1063/1.1445271

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electroluminescence quantum efficiency of organic light-emitting diodes with a doped Alq [tris(8-quinolinolato)aluminum] emitting layer is found to decrease markedly with increasing current density. This phenomenon was investigated using multilayer device structures permitting bipolar or unipolar carrier transport, and luminescence measurements with simultaneous optical and electrical excitation. The loss of electroluminescence quantum efficiency is attributed to the quenching of the singlet-excited state of the dopant by a cationic species. (C) 2002 American Institute of Physics.

引用

页码：874 / 876

页数：3

共 17 条

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ADACHI C, 1988, JPN J APPL PHYS, V27, P269

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