Organic electrochemical transistors based on PEDOT with different anionic polyelectrolyte dopants

Sahika Inal, Jonathan Rivnay, Anna I. Hofmann, Ilke Uguz, Muhammad Mumtaz, Dimitrios Katsigiannopoulos, Cyril Brochon, Eric Cloutet, Georges Hadziioannou, George G. Malliaras*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

63 Scopus citations


Recent applications of organic electrochemical transistors (OECTs) in bioelectronics motivate the search for new materials with mixed electronic and ionic conductivity. We investigate the characteristics of a series of poly(3,4-ethylenedioxythiophene) (PEDOT)-based materials with a new class of anionic polyelectrolytes used as dopants and stabilizers, replacing the traditionally used poly(styrene sulfonate) (PSS). We show that the backbone of the polyanion plays a major role in determining device performance, while its molecular weight and the counter ion used during PEDOT synthesis play a less important role. We find that transconductance increases with the degree of swelling of the film, consistent with enhanced ion transport. Finally, we identify a polymer that offers performance close to the state-of-the-art. This work highlights the importance of the polyanion phase as a means to control OECT performance.

Original languageEnglish (US)
Pages (from-to)147-151
Number of pages5
JournalJournal of Polymer Science, Part B: Polymer Physics
Issue number2
StatePublished - Jan 15 2016


  • electrochemical
  • mixed conductivity
  • polyanion
  • transistor

ASJC Scopus subject areas

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


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