Exciton dynamics in organic semiconductor devices: Investigation of exciton-charge carrier interactions as revealed by photoluminescence responses

被引：26

作者：

Ichikawa, M ^{[1
]}

Naitou, R ^{[1
]}

Koyama, T ^{[1
]}

Taniguchi, Y ^{[1
]}

机构：

[1] Shinshu Univ, Fac Text Sci & Technol, Dept Funct Polymer Sci, Ueda, Nagano 3868567, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 2001年 / 40卷 / 10A期

关键词：

exciton dynamics; exciton-charge interaction; exciton quenching; organic semiconductor device; organic light-emitting diode;

D O I：

10.1143/JJAP.40.L1068

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We measured the photoluminescence decay curves of an organic semiconductor device when the device was electrically driven, and we investigated its exciton dynamics when there were a large number of electrons. The device consisted of a transparent electrode (indium tin oxide), a tris (8-quinolinolato) aluminum layer (Alq, 100 nm), and a metal cathode (Mg:Ag or Al, 200 nm). It was demonstrated experimentally that a singlet exciton of Alq was quenched by electrons through a bimolecular process. The rate constant of the PL quenching was estimated to be of the order of 10(-9) similar to 10(-10) cm(3)/s.

引用

页码：L1068 / L1070

页数：3

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