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Organic Electrochemical Transistors Based on PEDOT with Different Anionic Polyelectrolyte Dopants

Abstract : 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-ethylene-dioxythiophene) (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.
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https://hal.archives-ouvertes.fr/hal-01369641
Contributor : Dominique Richard <>
Submitted on : Wednesday, September 21, 2016 - 12:14:36 PM
Last modification on : Tuesday, May 12, 2020 - 11:04:04 AM

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Sahika Inal, Jonathan Rivnay, Anna I. Hofmann, Ilke Uguz, Muhammad Mumtaz, et al.. Organic Electrochemical Transistors Based on PEDOT with Different Anionic Polyelectrolyte Dopants . Journal of Polymer Science Part B: Polymer Physics, Wiley, 2016, 54 (2), pp.147-151, SI. ⟨10.1002/polb.23938⟩. ⟨hal-01369641⟩

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