Polymer field-effect transistors fabricated by the sequential gravure printing of polythiophene, two insulator layers, and a metal ink gate

Monika M. Voigt, Alexander Cuite, Dae Young Chung, Rizwan U.A. Khan, Alasdair J. Campbell, Donal D.C. Bradley, Fanshun Meng, Joachim H.G. Steinke, Steve Tierney, Lain McCulloch, Huguette Penxten, Laurence Luisen, Olivier Douheret, Jean Manca, Ulrike Brokmann, Karin Sönnichsen, Dagmar Hülsenberg, Wolfgang Bock, Cecile Barron, Nicolas BlanckaertSimon Springer, Joachim Grupp, Alan Mcsley

Research output: Contribution to journalArticlepeer-review

114 Scopus citations

Abstract

The mass production technique of gravure contact printing is used to fabricate state-of-the art polymer field-effect transistors (FETs). Using plastic substrates with prepatterned indium tin oxide source and drain contacts as required for display applications, four different layers are sequentially gravureprinted; the semiconductor poly(3-hexylthiophene-2,S-diyl) (P3HT), two insulator layers, and an Ag gate. A Crosslin kable insulator and an Ag ink are developed which are both printable and highly robust Printing in ambient and using this bottom-contact/top-gate geometry, an on/off ratio of >10 4 and a mobility of 0.04 cm2 V-1 s-1 are achieved. This rivals the best top-gate polymer FETs fabricated with these materials. Printing using low concentration, low viscosity ink formulations, and different P3HT molecular weights is demonstrated. The printing speed of 40 m min-1 on a flexible polymer substrate demonstrates that very high-volume, reel-to-reel production of organic electronic devices is possible. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA.
Original languageEnglish (US)
Pages (from-to)239-246
Number of pages8
JournalAdvanced Functional Materials
Volume20
Issue number2
DOIs
StatePublished - Jan 22 2010
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Electrochemistry

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