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Proceedings Paper

Optoelectronic devices made from multilayer and molecularly doped organic layers
Author(s): Gerald Meinhardt; Wilhelm Graupner; Gerald Feistritzer; Raoul Schroeder; Emil J. W. List; Alex Pogantsch; Gary Dicker; Benedikt Schlicke; N. Schulte; A. D. Schlueter; Goetz Winter; Michael Hanack; Ullrich Scherf; Klaus Muellen; Guenther Leising
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Paper Abstract

We discuss the photovoltaic and electroluminescence properties of three groups of optoelectronic devices with the following organic materials: (A) single layer devices made of para-hexaphenyl (PHP), pristine methyl-substituted laddertype poly-para-phenylene (mLPPP) and N-(2,6- Diisopropylphenyl)-N'-octylterrylene-3,4,11,12-tetracarboxdiimide- (DOTer) sandwiched between ITO and Al electrodes, (B) mLPPP blended with TiO-phthalocyanine (TiO-Pc) and an aromatic macromolecule, (C) multilayer devices consisting of differently arranged layers made of mLPPP, PHP and DOTer. The motivation for these experiments is the optimization of either charge transfer or energy transfer from one molecular to its neighbor molecule. In order to obtain high photocurrents for photovoltaic applications it is favorable to use a combination of a polymer with electron donor properties and an organic substance with high electron affinity, which provides efficient charge transfer resolution in the creation of polarons. In particular we investigated the influence of the location of the photoactive region on the shape and magnitude of the photocurrent action spectra by performing experiments under electrical and optical bias for different excitation conditions. The best photovoltaic yields were obtained for hetero-structure devices.

Paper Details

Date Published: 18 May 1999
PDF: 12 pages
Proc. SPIE 3623, Organic Photonic Materials and Devices, (18 May 1999); doi: 10.1117/12.348412
Show Author Affiliations
Gerald Meinhardt, Technische Univ. Graz (Austria)
Wilhelm Graupner, Technische Univ. Graz (United States)
Gerald Feistritzer, Technische Univ. Graz (Austria)
Raoul Schroeder, Technische Univ. Graz (United States)
Emil J. W. List, Technische Univ. Graz (Austria)
Alex Pogantsch, Technische Univ. Graz (Austria)
Gary Dicker, Technische Univ. Graz (Austria)
Benedikt Schlicke, Freie Univ. Berlin (Germany)
N. Schulte, Freie Univ. Berlin (Germany)
A. D. Schlueter, Freie Univ. Berlin (Germany)
Goetz Winter, Univ. Tuebingen (Germany)
Michael Hanack, Univ. Tuebingen (Germany)
Ullrich Scherf, Max-Planck-Institut fuer Polymerforschung (Germany)
Klaus Muellen, Max-Planck-Institut fuer Polymerforschung (Germany)
Guenther Leising, Technische Univ. Graz (Austria)

Published in SPIE Proceedings Vol. 3623:
Organic Photonic Materials and Devices
Bernard Kippelen, Editor(s)

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