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Title: Extracting the emitter orientation in organic light-emitting diodes from external quantum efficiency measurements

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.
Authors:
; ; ; ; ;  [1] ; ; ;  [2] ; ;  [3]
  1. Institute of Physics, University of Augsburg, 86135 Augsburg (Germany)
  2. OSRAM OLED GmbH, Wernerwerkstrasse 2, 93049 Regensburg (Germany)
  3. Fraunhofer Institute for Applied Optics and Precision Engineering, 07745 Jena (Germany)
Publication Date:
OSTI Identifier:
22311221
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 4; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DIPOLE MOMENTS; DOPED MATERIALS; EMISSION; LIGHT EMITTING DIODES; ORIENTATION; QUANTUM EFFICIENCY; VISIBLE RADIATION