Modification of gold source and drain electrodes by self-assembled monolayer in staggered n- and p-channel organic thin film transistors

Damien Boudinet, Mohamed Benwadih, Yabing Qi, Stéphane Altazin, Jean Marie Verilhac, Michael Kroger, Christophe Serbutoviez, Romain Gwoziecki, Romain Coppard, Gilles Le Blevennec, Antoine Kahn, Gilles Horowitz

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92 Scopus citations

Abstract

We report on the effect of the deposition of self-assembled monolayers (SAMs) on the source and drain electrodes on the contact resistance and mobility in organic thin film transistors (OTFTs). Ultraviolet photoelectron spectroscopy (UPS) shows a variation of the work function of the electrodes depending on the SAM. OTFTs were fabricated with solution processible Polyera ActivInk™ N1400, TIPS-pentacene and TFB, giving access to both polarities of transistors and to both crystalline and amorphous materials. The transfer line method (TLM) was used to separately estimate the contact resistance and mobility. A clear correlation is found between the work function of the modified electrodes and the corresponding contact resistance. The effect on mobility is more puzzling, and tentatively attributed to morphological effects.

Original languageEnglish (US)
Pages (from-to)227-237
Number of pages11
JournalOrganic Electronics
Volume11
Issue number2
DOIs
StatePublished - Feb 2010

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

Keywords

  • Contact resistance
  • Organic thin film transistors
  • Self-assembled monolayer
  • Transfer line method

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    Boudinet, D., Benwadih, M., Qi, Y., Altazin, S., Verilhac, J. M., Kroger, M., Serbutoviez, C., Gwoziecki, R., Coppard, R., Le Blevennec, G., Kahn, A., & Horowitz, G. (2010). Modification of gold source and drain electrodes by self-assembled monolayer in staggered n- and p-channel organic thin film transistors. Organic Electronics, 11(2), 227-237. https://doi.org/10.1016/j.orgel.2009.10.021