https://doi.org/10.1007/s100510051017
Analysis of infrared reflectivity of conducting polymers: example of camphor-sulphonic-acid-doped polyaniline
1
Laboratoire d'Électrodynamique des Matériaux Avancés (Laboratoire de
Recherche Correspondant du CEA LRC M01 ) ,
Université François Rabelais, Parc de Grandmont, 37200 Tours, France
2
CEA/Le Ripault, Département Matériaux, BP 16, 37260 Monts, France
Corresponding author: a gervais@delphi.phys.univ-tours.fr
Received:
11
February
1999
Revised:
26
April
1999
Published online: 15 December 1999
The reflectivity spectrum of a polyaniline CSA-doped in presence of
m-cresol has been measured over the wide wavenumber range of
15-
(0.002-1.1 eV) at room temperature.
Experimental data compare well with similar experiments performed
by another group. The conductivity spectrum of this conducting
polymer has been deduced from the reflectivity spectrum by means
of two methods, Kramers-Kronig transformation and best fit
of an "extended Drude" model to the reflectivity spectrum. Whereas
the deviation from Drude behavior was interpreted in terms of Anderson
localization or by inhomogeneous disorder by other groups, it is
shown here that a different model developed for conducting oxides
that also exhibit non-Drude behavior, applies very well to this
example of conducting polymer.
PACS: 78.30.Jw – Organic compounds, polymers / 72.80.Le – Polymers; organic compounds (including organic semiconductors) / 71.38.+i – Polarons and electron-phonon interactions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1999
