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

Journal Article · Thu Jan 01 00:00:00 EST 2015 · APL materials

DOI:https://doi.org/10.1063/1.4905154· OSTI ID:22415242

Zhang, Shiming; Kumar, Prajwal; Nouas, Amel Sarah; Fontaine, Laurie; Tang, Hao; Cicoira, Fabio ^[1]

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1. Department of Chemical Engineering, Polytechnique Montreal, Montreal, Québec H3C 3J7 (Canada)

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.

• OSTI ID: 22415242
• Journal Information: APL materials, Vol. 3, Issue 1; Other Information: (c) 2014 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2166-532X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CROSS-LINKING
DOPED MATERIALS
ELECTRIC CONDUCTIVITY
ELECTROCHEMISTRY
FILMS
MIXTURES
ORGANIC POLYMERS
SOLVENTS
SPIN-ON COATING
TRANSISTORS
WATER