Correlation between Transient Response and Neuromorphic Behavior in Organic Electrochemical Transistors
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Publication Date
2022Journal Title
Advanced Electronic Materials
ISSN
2199-160X
Publisher
Wiley
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Yamamoto, S., Polyravas, A., Han, S., & Malliaras, G. (2022). Correlation between Transient Response and Neuromorphic Behavior in Organic Electrochemical Transistors. Advanced Electronic Materials https://doi.org/10.1002/aelm.202101186
Abstract
We examine the factors controlling the neuromorphic response of organic electrochemical transistors (OECTs). In these devices, the gate voltage is used to supply the pre-synaptic input, while the drain current is taken as the post-synaptic output. We analyze the behavior of devices made from polymer blends of a mixed conductor (PEDOT:PSS) and an ion conductor (PSSNa). The experimental results highlight that the post-synaptic response timescale depends on the size of ion in the electrolyte. Modeling shows that the neuromorphic response is controlled by the transient response of the ionic circuit of the OECT. These insights on device response time pave the way for a more rational design of OECT-based neuromorphic devices.
Keywords
neuromorphic devices, organic electrochemical transistors, transient responses
Identifiers
External DOI: https://doi.org/10.1002/aelm.202101186
This record's URL: https://www.repository.cam.ac.uk/handle/1810/331960
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