Hysteresis in Organic Electrochemical Transistors: Distinction of Capacitive and Inductive Effects
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comunitat-uji-handle2:10234/160292
comunitat-uji-handle3:10234/160293
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Title
Hysteresis in Organic Electrochemical Transistors: Distinction of Capacitive and Inductive EffectsAuthor (s)
Date
2023-12-14Publisher
American Chemical Society; American Chemical SocietyISSN
1948-7185Bibliographic citation
Bisquert, J. Hysteresis in Organic Electrochemical Transistors: Distinction of Capacitive and Inductive Effects. J. Phys. Chem. Lett. 2023, 14, 49, 10951–10958. https://doi.org/10.1021/acs.jpclett.3c03062Type
info:eu-repo/semantics/articlePublisher version
https://pubs.acs.org/doi/full/10.1021/acs.jpclett.3c03062Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
Organic electrochemical transistors (OECTs) are effective devices for neuromorphic applications, bioelectronics, and sensors. Numerous reports in the literature show persistent dynamical hysteresis effects in the ... [+]
Organic electrochemical transistors (OECTs) are effective devices for neuromorphic applications, bioelectronics, and sensors. Numerous reports in the literature show persistent dynamical hysteresis effects in the current–voltage curves, attributed to the slow ionic charging of the channel under the applied gate voltage. Here we present a model that considers the dominant electrical and electrochemical operation aspects of the device based on a thermodynamic function of ion insertion. We identify the volume capacitance as the derivative of the thermodynamic function, associated with the chemical capacitance of the ionic–electronic film. The dynamical analysis shows that the system contains both capacitive and inductive hysteresis effects. The inductor response, which can be observed in impedance spectroscopy, is associated with ionic diffusion from the surface to fill the channel up to the equilibrium value. The model reveals the multiple dynamical features associated with specific kinetic relaxations that control the transient and impedance response of the OCET. [-]
Is part of
Journal of Physical Chemistry Letters, 2023, vol. 14, no 49Funder Name
European Research Council
Project code
info:eu-repo/grantAgreement/EC/HE/101097688
Project title or grant
PeroSpiker: Perovskite Spiking Neurons for Intelligent Networks
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Copyright © 2023 The Author. Published by American Chemical Society. This publication is licensed under
CC-BY 4.0.
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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