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IMPEDANCE SPECTROSCOPY STUDIES ON DOPED POLYANILINES

D. Hui1, R. Alexandrescu2, M. Chipara3,* , I. Morjan2, Gh. Aldica4, M. D. Chipar2, K. T. Lau5

Affiliation

  1. University of New Orleans, Department of Mechanical Engineering, USA
  2. National Institute for Lasers, Plasma and Radiation Physics, Laser Department, Bucharest, Romania
  3. Radiation Effects Research Program, Indiana University Cyclotron Facility, 2401 Milo S Sampson Lane, Bloomington, Indiana, IN 47403-1398, USA
  4. National Institute of Materials Physics, Magurele, Bucharest, Romania
  5. The Hong Kong Polytechnic University, Department of Mechanical Engineering, Hong Kong, China

Abstract

Impedance spectroscopy studies on polyaniline doped by various amounts of HCl are reported. The measurements were performed at room temperature, over a wide range of frequencies [1000 Hz to 45 MHz]. The experimental data shows that the resistance dominates the AC behavior of polyaniline confirming that the charge transport occurs through an one-dimensional hopping process..

Keywords

Polyaniline, Acide doping, AC electrical conductivity, Variable range hopping.

Submitted at: March 24, 2004
Accepted at: June 22, 2004

Citation

D. Hui, R. Alexandrescu, M. Chipara, I. Morjan, Gh. Aldica, M. D. Chipar, K. T. Lau, IMPEDANCE SPECTROSCOPY STUDIES ON DOPED POLYANILINES, Journal of Optoelectronics and Advanced Materials Vol. 6, Iss. 3, pp. 817-824 (2004)