Extracting the emitter orientation in organic light-emitting diodes from external quantum efficiency measurements
- Institute of Physics, University of Augsburg, 86135 Augsburg (Germany)
- OSRAM OLED GmbH, Wernerwerkstrasse 2, 93049 Regensburg (Germany)
- Fraunhofer Institute for Applied Optics and Precision Engineering, 07745 Jena (Germany)
Emitter orientation will play a major role in future applications of organic light-emitting diodes due to its strong impact on the efficiency of the devices. Up to now, determining the orientation of transition dipole moments required elaborate angular-dependent measurements of the light emission pattern. In this paper, we present a simplified and straightforward method to extract the emitter orientation from external quantum efficiency measurements. We demonstrate the validity of the method on three different dye-doped emitting systems.
- OSTI ID:
- 22311221
- Journal Information:
- Applied Physics Letters, Vol. 105, Issue 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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