Naslov
The non-ideal organic electrochemical transistors impedance

Autori
Pecqueur, Sébastien ; Lončarić, Ivor ; Zlatić, Vinko ; Vuillaume, Dominique ; Crljen, Željko

Izvornik
Organic electronics (1566-1199) 71 (2019); 14-23

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Modeling ; Equivalent circuit ; Ion sensing

Sažetak
Organic electrochemical transistors offer powerful functionalities for biosensors and neuro-inspired electronics, with still much to understand on the time-dependent behavior of this electrochemical device. Here, we report on distributed-element modeling of the impedance of such micro-fabricated device, systematically performed under a large concentration variation for KCl(aq) and CaCl2(aq). We propose a new model which takes into account three main deviations to ideality, that were systematically observed, caused by both the materials and the device complexity, over large frequency range (1 Hz– 1 MHz). More than introducing more freedom degree, the introduction of these non-redundant parameters and the study of their behaviors as function of the electrolyte concentration and applied voltage give a more detailed picture of the OECT working principles. This optimized model can be further useful for improving OECT performances in many applications (e.g. biosensors, neuro-inspired devices, …) and circuit simulations.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA