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Steady-state and transient behavior of organic electrochemical transistors

Bernards, DA and Malliaras, GG (2007) Steady-state and transient behavior of organic electrochemical transistors. Advanced Functional Materials, 17. pp. 3538-3544. ISSN 1616-301X

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In recent years, organic electrochemical transistors (OECTs) have emerged as attractive devices for a variety of applications, particularly in the area of sensing. While the electrical characteristics of OECTs are analogous to those of conventional organic field effect transistors, appropriate models for OECTs have not yet been developed. In particular, little is known about the transient characteristics of OECTs, which are determined by a complex interplay between ionic and electronic motion. In this paper a simple model is presented that reproduces the steady-state and transient response of OECTs by considering these devices in terms of an ionic and an electronic circuit. A simple analytical expression is derived that can be used to fit steady-state OECT characteristics. For the transient regime, comparison with experimental data allowed an estimation of the hole mobility in poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate). This work paves the way for rational optimization of OECTs. © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.

Item Type: Article
Depositing User: Cron Job
Date Deposited: 10 Sep 2017 20:11
Last Modified: 12 Jul 2018 01:43