Structural analysis of intercalation compounds of pentacene

Takayoshi Ito, Tadaoki Mitani, Taishi Takenobu, Yoshihiro Iwasa

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Pentacene is a well known organic semiconductor because of its high mobility in the field-effect transistor devices, and also because film conductivity can be dramatically increased by electron and hole doping. For chemical and structural identification of the conducting phase, we carried out an intercalation experiment of pentacene with iodine at various iodine/ pentacene ratios. X-ray powder diffraction measurements revealed that there are two stable phases with different iodine concentrations. In the intermediate intercalation phase with the concentration of (pentacene)I2 and high conductivity, I3 - ions are inserted between the neighboring layers of pentacene. The saturation phase with higher iodine concentration is formed mainly of I5 -, associated with a significant lattice expansion.

Original languageEnglish
Pages (from-to)609-613
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Volume65
Issue number2-3
DOIs
Publication statusPublished - 2004 Feb
Externally publishedYes

Keywords

  • A. Organic compounds
  • B. Chemical synthesis
  • C. Raman spectroscopy
  • C. X-ray diffraction
  • D. Crystal structure

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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