Function of interfacial dipole monolayer in organic field effect transistors

  • Wei Ou-Yang*
  • , Martin Weis
  • , Keanchuan Lee
  • , Takaaki Manaka
  • , Mitsumasa Iwamoto
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The effect of interfacial dipole monolayer on carrier injection property of pentacene OFET was studied to understand the origin of contact resistance, which was evaluated from a modified transmission line model. The results showed the contact resistance of pentacene OFET with the dipole monolayer is much higher. This large discrepancy was found due to a small potential drop difference at the interface generated by the dipole monolayer. In addition, the strong local electric field confirmed the reason for the large negative threshold voltage shift. These studies show the importance of local electric field at pentacene-SiO2 interface generated by the dipole monolayer.

Original languageEnglish
Article number04DK10
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume50
Issue number4 PART 2
DOIs
StatePublished - Apr 2011
Externally publishedYes

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