Special Section on Organic Light-Emitting Materials and Devices

Comprehensive efficiency analysis of organic light-emitting devices

[+] Author Affiliations
Daniel S. Setz

OSRAM Opto Semiconductors GmbH, OLED-Lighting, 93055 Regensburg, Germany

Tobias D. Schmidt

University of Augsburg, Institute of Physics, Universitätsstraße 1, 86159 Augsburg, Germany

Michael Flämmich

Fraunhofer Institute for Applied Optics and Precision Engineering, 07745 Jena, Germany

Stefan Nowy

University of Augsburg, Institute of Physics, Universitätsstraße 1, 86159 Augsburg, Germany

Jörg Frischeisen

University of Augsburg, Institute of Physics, Universitätsstraße 1, 86159 Augsburg, Germany

Benjamin C. Krummacher

OSRAM Opto Semiconductors GmbH, OLED-Lighting, 93055 Regensburg, Germany

Thomas Dobbertin

OSRAM Opto Semiconductors GmbH, OLED-Lighting, 93055 Regensburg, Germany

Karsten Heuser

OSRAM Opto Semiconductors GmbH, OLED-Lighting, 93055 Regensburg, Germany

Dirk Michaelis

Fraunhofer Institute for Applied Optics and Precision Engineering, 07745 Jena, Germany

Norbert Danz

Fraunhofer Institute for Applied Optics and Precision Engineering, 07745 Jena, Germany

Wolfgang Brütting

University of Augsburg, Institute of Physics, Universitätsstraße 1, 86159 Augsburg, Germany

Albrecht Winnacker

Friedrich Alexander University, Materials for Electronics and Energy Technology, Erlangen-Nuremberg, 91058 Erlangen, Germany

J. Photon. Energy. 1(1), 011006 (January 13, 2011). doi:10.1117/1.3528274
History: Received August 13, 2010; Revised November 11, 2010; Accepted November 15, 2010; Published January 13, 2011; Online January 14, 2011
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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.

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© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Daniel S. Setz ; Tobias D. Schmidt ; Michael Flämmich ; Stefan Nowy ; Jörg Frischeisen, et al.
"Comprehensive efficiency analysis of organic light-emitting devices", J. Photon. Energy. 1(1), 011006 (January 13, 2011). ; http://dx.doi.org/10.1117/1.3528274


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