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

  • F. Gervais
  • N. Petit
  • C. Popon
  • P. Buvat

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.

PACS. 78.30.Jw Organic compounds, polymers – 72.80.Le Polymers; organic compounds (including organic semiconductors) – 71.38.+i Polarons and electron-phonon interactions 

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Copyright information

© EDP Sciences, Springer-Verlag 2003

Authors and Affiliations

  • F. Gervais
    • 1
  • N. Petit
    • 1
  • C. Popon
    • 1
  • P. Buvat
    • 2
  1. 1.Laboratoire d'Électrodynamique des Matériaux Avancés, Université François Rabelais, Parc de Grandmont, 37200 Tours FranceFR
  2. 2.CEA/Le Ripault, Département Matériaux, BP 16, 37260 Monts, FranceFR

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