Eur. Phys. J. B 31, 47-52 (2003)
https://doi.org/10.1140/epjb/e2003-00007-9

Doping dependence of infrared conductivity of camphor-sulphonic-acid-doped polyaniline

¹ Laboratoire d'Électrodynamique des Matériaux Avancés (UMR 6157 CNRS/CEA) , 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: 6 February 2002
Revised: 12 August 2002
Published online: 27 January 2003

Abstract

The reflectivity spectrum of a polyaniline CSA-doped in presence of m-cresol has been measured over the wide wavenumber range 25–15,000 cm^-1 (0.003–1.9 eV) for three different doping levels. Since spectra cannot be fitted correctly with the conventional Drude model, several extensions are tested. A model derived from the factorized form of the dielectric response and including the effect of Anderson localization in disordered metals, is proposed and found to yield good fit to data with a satisfactory physical meaning. Data are reduced to a small number of parameters potentially useful for further comparison with other conducting polymers or even other non-Drude conducting media like oxides.