Integration of organic electrochemical transistors with implantable probes

by S. Han, A.G. Polyravas, S. Wustoni, S. Inal, G.G. Malliaras
Year:2021 DOI: 10.1002/admt.202100763

Bibliography

Integration of organic electrochemical transistors with implantable probes
S. Han, A.G. Polyravas, S. Wustoni, S. Inal, G.G. Malliaras
Advanced Materials Technologies, 2100763, 2021

Abstract

Organic electrochemical transistors (OECTs) are widely used as amplifying transducers of biological signals due to their high transconductance and biocompatibility. For implantable applications that penetrate into tissue, OECTs need to be integrated onto narrow probes. The scarcity of real estate necessitates the use of small local gate electrodes and narrow interconnects. This work shows that both of these factors lead to a decrease in the maximum transconductance and an increase in gate voltage required to attain this maximum. This work further shows that coating the gate electrode with a thick conducting polymer improves performance. These findings help guide the development of efficient OECTs on implantable probes.

Keywords

Implantable electrodes Organic electrochemical transistors Transconductance
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