Stable operating windows for polythiophene organic electrochemical transistors

Scott T. Keene, Luke W. Gatecliff, Sophia L. Bidinger, Maximilian Moser, Iain McCulloch, George G. Malliaras

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Organic electrochemical transistors (OECTs) have emerged as a promising platform for biosensing, electrophysiology, and neuromorphic devices. However, OECTs are often limited by the stability of the channel materials. Here, we systematically investigate the stability of OECT channels under varied operating voltage ranges. We find that OECT materials can be operated with high stability when the voltage range is reduced. We show that repeated full voltage cycling degrades device performance. The results indicate that to maximize stability, OECTs should either be operated in the saturation regime to maximize current gain (transconductance) or in the subthreshold regime to maximize the on/off ratio. Graphical abstract: (Figure presented.)

Original languageEnglish (US)
Pages (from-to)158-166
Number of pages9
JournalMRS Communications
Volume14
Issue number2
DOIs
StatePublished - Apr 2024
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Materials Science

Keywords

  • Bioelectronic
  • Devices
  • Electrical properties
  • Ionic conductor
  • Polymer

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