Mixed conduction in conjugated polymers devices
George Malliaras a
a University of Cambridge, Department of Engineering, UK, JJ Thomson Avenue, 9, Cambridge, United Kingdom
Materials for Sustainable Development Conference (MATSUS)
Proceedings of nanoGe Spring Meeting 2022 (NSM22)
#FUN-OrgBio22. Fundamentals of Organic Bioelectronic Devices
Online, Spain, 2022 March 7th - 11th
Organizers: Eleni Stavrinidou and Annalisa Bonfiglio
Invited Speaker, George Malliaras, presentation 021
DOI: https://doi.org/10.29363/nanoge.nsm.2022.021
Publication date: 7th February 2022

Conjugated polymers have found a fertile field of application in bioelectronics. Their ability to change doping state after injection of ions from an electrolyte (the so-called electrochemical doping process) makes them versatile transducers of ionic-to-electronic conduction. This process is at the heart of most bioelectronic devices. I will present a device-level description of this process, where electronic and ionic carrier injection/extraction is followed by bipolar transport and compensation, and discuss the role of extrinsic processes including electrolysis and charge transfer to species in the electrolyte. Experiments and simulations will show the relative importance of these processes in typical materials systems.

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