CUED Publications database

High-Performance Vertical Organic Electrochemical Transistors.

Donahue, MJ and Williamson, A and Strakosas, X and Friedlein, JT and McLeod, RR and Gleskova, H and Malliaras, GG (2017) High-Performance Vertical Organic Electrochemical Transistors. Adv Mater.

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Abstract

Organic electrochemical transistors (OECTs) are promising transducers for biointerfacing due to their high transconductance, biocompatibility, and availability in a variety of form factors. Most OECTs reported to date, however, utilize rather large channels, limiting the transistor performance and resulting in a low transistor density. This is typically a consequence of limitations associated with traditional fabrication methods and with 2D substrates. Here, the fabrication and characterization of OECTs with vertically stacked contacts, which overcome these limitations, is reported. The resulting vertical transistors exhibit a reduced footprint, increased intrinsic transconductance of up to 57 mS, and a geometry-normalized transconductance of 814 S m-1 . The fabrication process is straightforward and compatible with sensitive organic materials, and allows exceptional control over the transistor channel length. This novel 3D fabrication method is particularly suited for applications where high density is needed, such as in implantable devices.

Item Type: Article
Uncontrolled Keywords: device density electrochemical transistors organic bioelectronics transconductance vertical
Subjects: UNSPECIFIED
Divisions: UNSPECIFIED
Depositing User: Cron Job
Date Deposited: 30 Jan 2018 01:21
Last Modified: 12 Apr 2021 20:34
DOI: 10.1002/adma.201705031