Origin of enhanced electrical and conducting properties in pentacene films doped by molybdenum trioxide

Yan Hui Lou, Mei Feng Xu, Lei Zhang, Zhao Kui Wang*, Shigeki Naka, Hiroyuki Okada, Liang Sheng Liao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

57 Scopus citations

Abstract

Molybdenum trioxide (MoO3) doped organic semiconductors have shown attractive applications in organic electric devices. The authors carried out an investigation on the origin of enhanced photoelectric characteristics in MoO3-doped pentacene films. Electrical properties including charge transport, trap density and conductivity in bulk MoO3-doped pentacene films were investigated through fundamental measurements of current-voltage characteristics. Electrical structure and conducting mechanism in MoO 3-doped pentacene films were further evaluated by X-ray diffraction and X-ray photoelectron spectroscopy measurements. The experimental results suggest that the improved conductivity in MoO3-doped pentacene film was partly associated with the increased ratio of low Mo oxidation state (Mo4+) with a fact of better conducting property of MoO2 than that MoO3.

Original languageEnglish
Pages (from-to)2698-2704
Number of pages7
JournalOrganic Electronics
Volume14
Issue number10
DOIs
StatePublished - 2013

Keywords

  • Charge transfer
  • Conductivity
  • Trap density

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Biomaterials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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