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

By Shiming Zhang, Prajwal Kumar, Amel Sarah Nouas, L. Fontaine, Hao Tang, F. Cicoira. 2015

164 citations recorded by the source corpus.

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.

Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/b7c71cd141484aca9767239aaa3646c9d579b3eb