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 language | English |
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Pages (from-to) | 609-613 |
Number of pages | 5 |
Journal | Journal of Physics and Chemistry of Solids |
Volume | 65 |
Issue number | 2-3 |
DOIs | |
Publication status | Published - 2004 Feb |
Externally published | Yes |
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