Effect of organic buffer layer on performance of pentacene field-effect transistor fabricated on natural mica gate dielectric

Akira Matsumoto, Ryo Onori, Susumu Ikeda, Koichiro Saiki, Keiji Ueno

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The mobility of pentacene-based organic field-effect transistors (OFETs) fabricated on natural mica substrates has been highly improved using poly (methyl methacrylate) (PMMA) or octadecyltrimethoxysillane (OTMS) as a buffer layer between the mica dielectric and the pentacene active layer. The field-effect mobility increased from 2.4 × 10-3 to 0.14 or 0.31 cm2·V-1·s-1 by inserting the PMMA or OTMS buffer layer, respectively. The suppression of the unfavorable effect of potassium ions using the OTMS buffer layer confirmed the feasibility of using natural mica as a transparent gate dielectric of OFETs.

Original languageEnglish
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume46
Issue number36-40
DOIs
Publication statusPublished - 2007 Oct 12
Externally publishedYes

Keywords

  • Carrier transport
  • Layered material
  • Mica
  • Organic field-effect transistor
  • Pentacene
  • Self-assembled monolayer

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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