Controlling Transport and Trapping in Organic Mixed Ionic/Electronic Conductors for Applications in Bioelectronic Circuits and Neuromorphic Devices
Jonathan Rivnay a, Xudong Ji a
a Northwestern University
Materials for Sustainable Development Conference (MATSUS)
Proceedings of nanoGe Spring Meeting 2022 (NSM22)
#OMIECs22. Organic mixed-ionic-electronic conductors and their application in Emerging Technologies
Online, Spain, 2022 March 7th - 11th
Organizers: Aristide Gumyusenge and Alexander Giovannitti
Invited Speaker, Xudong Ji, presentation 121
DOI: https://doi.org/10.29363/nanoge.nsm.2022.121
Publication date: 7th February 2022

Organic mixed ionic/electronic conductors (OMIECs) have gained considerable interest in bioelectronics, power electronics, circuits and neuromorphic computing. These organic, often polymer-based, semiconductors rely on a combination of ionic transport, electronic transport, and high volumetric charge storage capacity. Growth in this field has produced a vast library of new materials and an expanding suit of new or improved device implementation strategies. In this talk, we highlight recent synthetic and processing approaches used to tailor electrochemical device properties and stability, as well as new device concepts enabled by such advances. Control of ionic transport and trapping for example presents a promising avenue towards the development of non-volatile electrochemical transistors. We show that additives in prototypical conducting polymers can lead to neuromorphic function which can mimic basic neural function. The need for deeper fundamental studies to solve persistent barriers in OMIECs is also addressed.

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