Journal of Applied Electrochemistry

, Volume 22, Issue 6, pp 522–527 | Cite as

The influence of dopant permeability on electrochromic performance of polypyrrole films

  • H. -T. Chiu
  • J. -S. Lin
  • J. -N. Shiau


Detailed characteristics of the electrochromic performance of polypyrrole films under electrochemical doping and dedoping are studied. The response time for colour change in polypyrrole films depends on the dopant permeability. The change in film colour occurring in the redox reaction of the film is investigated in detail as a function of the dopant electrolyte solution and the thickness of the polypyrrole film. Three colour states for polypyrrole films are demonstrated: yellow green, dark brown, and blue.


Colour Permeability Physical Chemistry Response Time Colour Change 
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Copyright information

© Chapman & Hall 1992

Authors and Affiliations

  • H. -T. Chiu
    • 1
  • J. -S. Lin
    • 1
  • J. -N. Shiau
    • 1
  1. 1.Research Program for Polymers and TextilesNational Taiwan Institute of TechnologyTaipeiTaiwan, ROC

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