Inkjetted crystalline single monolayer oligothiophene OTFTs

Paul C. Chang*, Steven E. Molesa, Amanda R. Murphy, Jean Frechet, Vivek Subramanian

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Crystalline monolayer films of a novel organic semiconducting material were deposited as the active layer for organic thin-film transistors (OTFTs) via inkjet printing. Devices exhibited field-effect mobilities up to 0.07 cm2/V · s and on/off ratios > 108, surpassing values measured for devices cast with thicker films of the same material. The printed monolayer devices exhibited superior subthreshold characteristics with less hysteresis, and defect and trap densities are improved over thicker film analogs. These results show that solution deposition techniques such as inkjet printing can result in the monolayer crystalline thin films that are requisite for near-ideal electrostatics in OTFTs.

Original languageEnglish (US)
Pages (from-to)594-600
Number of pages7
JournalIEEE Transactions on Electron Devices
Volume53
Issue number4
DOIs
StatePublished - Apr 1 2006

Keywords

  • Inkjet
  • Monolayer
  • Oligothiophene
  • Organic thin-film transistor (OTFT)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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