A physical interpretation of impedance at conducting polymer/electrolyte junctions

Eleni Stavrinidou, Michele Sessolo, Bjorn Winther Jensen, Sébastien Sanaur, George G. Malliaras*

*この研究の対応する著者

研究成果査読

21 被引用数 (Scopus)

抄録

We monitor the process of dedoping in a planar junction between an electrolyte and a conducting polymer using electrochemical impedance spectroscopy performed during moving front measurements. The impedance spectra are consistent with an equivalent circuit of a time varying resistor in parallel with a capacitor. We show that the resistor corresponds to ion transport in the dedoped region of the film, and can be quantitatively described using ion density and drift mobility obtained from the moving front measurements. The capacitor, on the other hand, does not depend on time and is associated with charge separation at the moving front. This work offers a physical description of the impedance of conducting polymer/electrolyte interfaces based on materials parameters.

本文言語English
論文番号017127
ジャーナルAIP Advances
4
1
DOI
出版ステータスPublished - 2014 1
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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