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Analysis of infrared reflectivity of conducting polymers: example of camphor-sulphonic-acid-doped polyaniline

  • N. Petit
  • F. Gervais
  • P. Buvat
  • P. Hourquebie
  • P. Topart
Article

Abstract:

The reflectivity spectrum of a polyaniline CSA-doped in presence of m-cresol has been measured over the wide wavenumber range of 15- 9 000 cm-1 (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 

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Copyright information

© EDP Sciences, Springer-Verlag, Società Italiana di Fisica 1999

Authors and Affiliations

  • N. Petit
    • 1
  • F. Gervais
    • 1
  • P. Buvat
    • 2
  • P. Hourquebie
    • 2
  • P. Topart
    • 2
  1. 1.Laboratoire d'Électrodynamique des Matériaux Avancés (Laboratoire de Recherche Correspondant du CEA LRC M01)Université François RabelaisToursFrance
  2. 2.Département MatériauxCEA/Le RipaultMontsFrance

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