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Effect of the gate electrode on the response of organic electrochemical transistors (Articolo in rivista)

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Effect of the gate electrode on the response of organic electrochemical transistors (Articolo in rivista) (literal)

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Giuseppe Tarabella1, Clara Santato2, Sang Yoon Yang3, Salvatore Iannotta4, George G. Malliaras5, and Fabio Cicoira1,3 (2010)
Effect of the gate electrode on the response of organic electrochemical transistors
in Applied physics letters; American Institute Of Physics (AIP), Melville (Stati Uniti d'America)
(literal)

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Giuseppe Tarabella1, Clara Santato2, Sang Yoon Yang3, Salvatore Iannotta4, George G. Malliaras5, and Fabio Cicoira1,3 (literal)

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Rivista

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In: Applied Physics Letters, vol. 97 (12) article n. 123304. AIP, 2010. (literal)

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1 CNR-IFN, via alla Cascata 56/c, 38123 Trento, Italy 2 Département de Génie Physique, École Polytechnique de Montréal, 2500 chemin de Polytechnique, Montréal, Québec H3T 1J4, Canada 3 Department of Materials Science and Engineering, Cornell University, Ithaca, New York 14853, USA 4 CNR-IMEM, Parco Area delle Scienze 37/A, 43100 Parma, Italy 5 Centre Microélectronique de Provence, École Nationale Supérieure des Mines de Saint Etienne, 880 route de Mimet, 13541 Gardanne, France (literal)

Titolo

Effect of the gate electrode on the response of organic electrochemical transistors (literal)

Abstract

Organic electrochemical transistors (OECTs) are attracting a great deal of interest for biosensing and bioelectronics applications. However, their device physics is not yet well-understood. In this paper, we focus on the effect of the gate electrode material on the response of OECTs. We studied OECTs made from the conducting polymer poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate), and which utilized halide electrolytes. We demonstrate that OECTs with Ag gate electrodes show larger current modulation compared to OECTs with Pt gate electrodes. This effect is due to a change in the OECT regime of operation from capacitive, in case of a Pt gate electrode, to Faradaic, in the case of an Ag electrode. (literal)

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