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Journal of Photonics for Energy • Open Access

Comprehensive efficiency analysis of organic light-emitting devices
Author(s): Daniel S. Setz; Tobias Schmidt; Michael Flämmich; Stefan Nowy; Jörg Frischeisen; Benjamin C. Krummacher; Thomas D. Dobbertin; Karsten Heuser; Dirk Michaelis; Norbert Danz; Wolfgang Brütting; Albrecht Winnacker

Paper Abstract

We focus on the determination of the internal luminescence quantum efficiency of a green-emitting organic light-emitting diode (OLED). By considering different geometrical configurations of OLED thin-film stacks, we elucidate the role of the internal luminescence quantum efficiency of the emitter in the thin-film microcavity. Combining optical simulations with experimental results, a comprehensive efficiency analysis is performed. Here the electroluminescence of a set of OLEDs is characterized. Additionally, the devices are characterized using time-resolved photoluminescence measurements. The experimental data are analyzed using optical simulations. This analysis leads to a quantification of internal luminescence quantum efficiency and allows conclusions about competing mechanisms resulting in nonradiative recombination of charge carriers.

Paper Details

Date Published: 1 January 2011
PDF: 13 pages
J. Photon. Energy. 1(1) 011006 doi: 10.1117/1.3528274
Published in: Journal of Photonics for Energy Volume 1, Issue 1
Show Author Affiliations
Daniel S. Setz, OSRAM Opto Semiconductors GmbH (Germany)
Tobias Schmidt, Univ. Augsburg (Germany)
Michael Flämmich, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Stefan Nowy, Univ. Augsburg (Germany)
Jörg Frischeisen, Univ. Augsburg (Germany)
Benjamin C. Krummacher, OSRAM Opto Semiconductors GmbH (Germany)
Thomas D. Dobbertin, OSRAM Opto Semiconductors GmbH (Germany)
Karsten Heuser, OSRAM Opto Semiconductors GmbH (Germany)
Dirk Michaelis, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Norbert Danz, Fraunhofer-Institut für Angewandte Optik und Feinmechanik (Germany)
Wolfgang Brütting, Univ. Augsburg (Germany)
Albrecht Winnacker, Friedrich-Alexander-Univ. Erlangen-Nürnberg (Germany)


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