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Title: Modifications of the exciton lifetime and internal quantum efficiency for organic light-emitting devices with a weak/strong microcavity
Authors: Chen, Xue-Wen
Choy, Wallace C. H.
Liang, C. J.
Wai, Ping-kong Alexander
He, Sailing
Subjects: Excitons
Organic light emitting diodes
Radiative lifetimes
Surface plasmon resonance
Issue Date: 26-Nov-2007
Publisher: American Institute of Physics
Source: Applied physics letters, 26 Nov. 2007, v. 91, no. 22, 221112, p. 1-3.
Abstract: A comprehensive analysis is given on the modifications of the exciton lifetime and internal quantum efficiency (η[sub int]) for organic light-emitting devices (OLEDs). A linear relation is derived between the exciton lifetime and ηint, which is difficult to measure directly. The internal quantum efficiency can thus be estimated easily through the measurement of the exciton lifetime. The exciton lifetimes for OLEDs with weak or strong microcavity are studied experimentally and theoretically. The modification of the exciton lifetime is well explained through the microcavity effect and surface plasmon resonance. An excellent agreement between the experimental and theoretical results is achieved.
Rights: © 2007 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in X.-W. Chen et al., Appl. Phys. Lett. 91, 221112 (2007) and may be found at
Type: Journal/Magazine Article
DOI: 10.1063/1.2819610
ISSN: 0003-6951 (print)
1077-3118 (online)
Appears in Collections:EIE Journal/Magazine Articles

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