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Title: Solvent-induced changes in PEDOT:PSS films for organic electrochemical transistors

Organic electrochemical transistors based on the conducting polymer poly(3,4-ethylenedioxythiophene) doped with poly(styrenesulfonate) (PEDOT:PSS) are of interest for several bioelectronic applications. In this letter, we investigate the changes induced by immersion of PEDOT:PSS films, processed by spin coating from different mixtures, in water and other solvents of different polarities. We found that the film thickness decreases upon immersion in polar solvents, while the electrical conductivity remains unchanged. The decrease in film thickness is minimized via the addition of a cross-linking agent to the mixture used for the spin coating of the films.
Authors:
; ; ; ; ;  [1]
  1. Department of Chemical Engineering, Polytechnique Montreal, Montreal, Qu├ębec H3C 3J7 (Canada)
Publication Date:
OSTI Identifier:
22415242
Resource Type:
Journal Article
Resource Relation:
Journal Name: APL materials; Journal Volume: 3; Journal Issue: 1; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CROSS-LINKING; DOPED MATERIALS; ELECTRIC CONDUCTIVITY; ELECTROCHEMISTRY; FILMS; MIXTURES; ORGANIC POLYMERS; SOLVENTS; SPIN-ON COATING; TRANSISTORS; WATER