Understanding volumetric capacitance in conducting polymers

Christopher M. Proctor, Jonathan Rivnay, George G. Malliaras*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

75 Scopus citations

Abstract

Recent measurements in poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) films show that capacitance scales with film volume. We discuss the ramifications of this finding and propose a simple model that describes capacitance in terms of sites in which ions injected from the electrolyte replace holes that are extracted from the film by a metal contact. We propose that volumetric capacitance is inversely proportional to the average distance between these sites.

Original languageEnglish (US)
Pages (from-to)1433-1436
Number of pages4
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume54
Issue number15
DOIs
StatePublished - Aug 1 2016

Keywords

  • bioelectronics
  • conducting polymers
  • electrochemical impedance
  • mixed conductivity
  • organic bioelectronics

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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