Nanoscale Ion-Doped Polymer Transistors

Quentin Thiburce, Alexander Giovannitti, Iain McCulloch, Alasdair J. Campbell*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Organic transistors with submicron dimensions have been shown to deviate from the expected behavior due to a variety of so-called "short-channel" effects, resulting in nonlinear output characteristics and a lack of current saturation, considerably limiting their use. Using an electrochemically doped polymer in which ions are dynamically injected and removed from the bulk of the semiconductor, we show that devices with nanoscale channel lengths down to 50 nm exhibit output curves with well-defined linear and saturation regimes. Additionally, they show very large on-currents on par with their microscale counterparts, large on-to-off ratios of 10 8 , and record-high width-normalized transconductances above 10 S m -1 . We believe this work paves the way for the fabrication of high-gain, high-current polymer integrated circuits such as sensor arrays operating at voltages below |1 V| and prepared using simple solution-processing methods.

Original languageEnglish (US)
Pages (from-to)1712-1718
Number of pages7
JournalNano Letters
Volume19
Issue number3
DOIs
StatePublished - Mar 13 2019

Keywords

  • Organic electronics
  • conjugated polymer
  • ion gel
  • large transconductance
  • organic electrochemical transistor (OECT)
  • short-channel transistor

ASJC Scopus subject areas

  • General Chemistry
  • Condensed Matter Physics
  • Mechanical Engineering
  • Bioengineering
  • General Materials Science

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