Mimicking associative learning using an ion-trapping non-volatile synaptic organic electrochemical transistor
Xudong Ji,
Bryan D. Paulsen,
Gary K. K. Chik,
Ruiheng Wu,
Yuyang Yin,
Paddy K. L. Chan () and
Jonathan Rivnay ()
Additional contact information
Xudong Ji: The University of Hong Kong
Bryan D. Paulsen: Northwestern University
Gary K. K. Chik: The University of Hong Kong
Ruiheng Wu: Northwestern University
Yuyang Yin: The University of Hong Kong
Paddy K. L. Chan: The University of Hong Kong
Jonathan Rivnay: Northwestern University
Nature Communications, 2021, vol. 12, issue 1, 1-12
Abstract:
Abstract Associative learning, a critical learning principle to improve an individual’s adaptability, has been emulated by few organic electrochemical devices. However, complicated bias schemes, high write voltages, as well as process irreversibility hinder the further development of associative learning circuits. Here, by adopting a poly(3,4-ethylenedioxythiophene):tosylate/Polytetrahydrofuran composite as the active channel, we present a non-volatile organic electrochemical transistor that shows a write bias less than 0.8 V and retention time longer than 200 min without decoupling the write and read operations. By incorporating a pressure sensor and a photoresistor, a neuromorphic circuit is demonstrated with the ability to associate two physical inputs (light and pressure) instead of normally demonstrated electrical inputs in other associative learning circuits. To unravel the non-volatility of this material, ultraviolet-visible-near-infrared spectroscopy, X-ray photoelectron spectroscopy and grazing-incidence wide-angle X-ray scattering are used to characterize the oxidation level variation, compositional change, and the structural modulation of the poly(3,4-ethylenedioxythiophene):tosylate/Polytetrahydrofuran films in various conductance states. The implementation of the associative learning circuit as well as the understanding of the non-volatile material represent critical advances for organic electrochemical devices in neuromorphic applications.
Date: 2021
References: Add references at CitEc
Citations: View citations in EconPapers (13)
Downloads: (external link)
https://www.nature.com/articles/s41467-021-22680-5 Abstract (text/html)
Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.
Export reference: BibTeX
RIS (EndNote, ProCite, RefMan)
HTML/Text
Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-22680-5
Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/
DOI: 10.1038/s41467-021-22680-5
Access Statistics for this article
Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie
More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().