Modifications of the exciton lifetime and internal quantum efficiency for organic light-emitting devices with a weak/strong microcavity

Xue Wen Chen, Wallace C.H. Choy, C. J. Liang, Ping Kong Alexander Wai, Sailing He

Research output: Journal article publicationJournal articleAcademic researchpeer-review

27 Citations (Scopus)

Abstract

A comprehensive analysis is given on the modifications of the exciton lifetime and internal quantum efficiency (int) for organic light-emitting devices (OLEDs). A linear relation is derived between the exciton lifetime and int, 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.
Original languageEnglish
Article number221112
JournalApplied Physics Letters
Volume91
Issue number22
DOIs
Publication statusPublished - 6 Dec 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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