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Highly Ordered Crystalline Thin Film Bilayers of Para-Hexaphenyl and C60 Grown by Hot Wall Epitaxy

Published online by Cambridge University Press:  21 March 2011

Helmut Sitter ,
Gebhard Matt ,
Andrei Yu. Andreev ,
Christoph J. Brabec ,
Dirk Badt ,
Helmut Neugebauer  and
Niyazi S. Sariciftci
Helmut Sitter
Affiliation:
Institute for Semiconductor- and Solid State Physics, J. Kepler University of Linz
Gebhard Matt
Affiliation:
Christian Doppler Laboratory for Plastic Solar Cells and Institute for Physical Chemistry, J. Kepler University of Linz, Altenbergerstr. 69, A-4040 Linz, Austria
Andrei Yu. Andreev
Affiliation:
Christian Doppler Laboratory for Plastic Solar Cells and Institute for Physical Chemistry, J. Kepler University of Linz, Altenbergerstr. 69, A-4040 Linz, Austria
Christoph J. Brabec
Affiliation:
Christian Doppler Laboratory for Plastic Solar Cells and Institute for Physical Chemistry, J. Kepler University of Linz, Altenbergerstr. 69, A-4040 Linz, Austria
Dirk Badt
Affiliation:
Institute for Biophysics, J. Kepler University of Linz
Helmut Neugebauer
Affiliation:
Christian Doppler Laboratory for Plastic Solar Cells and Institute for Physical Chemistry, J. Kepler University of Linz, Altenbergerstr. 69, A-4040 Linz, Austria
Niyazi S. Sariciftci
Affiliation:
Christian Doppler Laboratory for Plastic Solar Cells and Institute for Physical Chemistry, J. Kepler University of Linz, Altenbergerstr. 69, A-4040 Linz, Austria
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Abstract

This work focuses on single - and bilayers of para - hexaphenyl (PHP) and C60 grown by Hot Wall Epitaxy. A detailed study of the growth process was performed on glass, ITO and (001)- oriented cleaved mica substrates. The ordering of the layers was investigated by X-ray diffraction, showing clear diffraction peaks for layers grown on mica. The PHP layers grown on mica show high optical anisotropy (dichroic ratios up to 14 in emission) according to the polarization dependent photoluminescence experiments. The highly ordered structure is also reflected in the surface morphology of the layer as observed by atomic force microscopy. The epitaxial growth on mica is mirrored by the main alignment of the surface structure to the orientation of the mica substrate.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 598: Symposium BB – Electrical, Optical, & Magenetic Properties...V , 1999 , BB3.39
Copyright
Copyright © Materials Research Society 1999

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