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Journal of Photonics for Energy • Open Access

Periodic nanostructuring for guided mode extraction in organic light-emitting diodes
Author(s): Julian Hauss; Boris Riedel; Sebastian Gleiss; Ulf Geyer; Uli Lemmer; Martina Gerken

Paper Abstract

We investigated guided mode extraction in organic light-emitting diodes and compare the experimental findings to transfer matrix (T-matrix) and finite difference time domain (FDTD) simulations. To this end, we patterned the indium tin oxide anode with Bragg gratings with lattice constants from 300 to 600 nm and varied the depth of the grating structures. The structuring was done by laser interference lithography and plasma etching. Both techniques allow for a rapid large area processing. We measured angle resolved electroluminescent spectra of the nanostructured devices and reference devices. To obtain the mode distribution in the devices we made use of T-matrix simulations. In addition we performed FDTD simulations of the emission characteristics of the patterned devices. The simulations are in agreement with our experimental findings and give insight into the outcoupling mechanisms.

Paper Details

Date Published: 1 January 2011
PDF: 10 pages
J. Photon. Energy 1(1) 011012 doi: 10.1117/1.3544495
Published in: Journal of Photonics for Energy Volume 1, Issue 1
Show Author Affiliations
Julian Hauss, Karlsruher Institut für Technologie (Germany)
Boris Riedel, Karlsruher Institut für Technologie (Germany)
Sebastian Gleiss, Karlsruher Institut für Technologie (Germany)
Ulf Geyer, Christian-Albrechts-Univ. zu Kiel (Germany)
Uli Lemmer, Karlsruher Institut für Technologie (Germany)
Martina Gerken, Christian-Albrechts-Univ. zu Kiel (Germany)

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