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Infrared Photospectroelectrochemistry of Germanium/Pedot/Electrolyte Interfaces

Published online by Cambridge University Press:  21 March 2011

Helmut Neugebauer ,
Teketel Yohannes  and
N. Serdar Sariciftci
Helmut Neugebauer
Affiliation:
Physical Chemistry, Johannes Kepler University Linz Altenbergerstr. 69, A-4040 Linz, Austria
Teketel Yohannes
Affiliation:
Physical Chemistry, Johannes Kepler University Linz Altenbergerstr. 69, A-4040 Linz, Austria
N. Serdar Sariciftci
Affiliation:
Physical Chemistry, Johannes Kepler University Linz Altenbergerstr. 69, A-4040 Linz, Austria
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Abstract

Difference infrared spectra between illumination and dark of a polyethylenedioxythiophene (PEDOT) covered germanium electrode in contact with the electrolyte solution and under applied potential are shown. The spectra show a different behavior at different redox (doping) states of the polymer. The photoinduced formation of positive charge carriers was found by illumination of the neutral (undoped) form, wheras no significant spectral changes occur in the oxidized (p-doped) and reduced (n-doped) form of PEDOT.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 598: Symposium BB – Electrical, Optical, & Magenetic Properties...V , 1999 , BB3.73
Copyright
Copyright © Materials Research Society 1999

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