Vibrational properties of perfluoropentacene thin film
| Autor: | Satoshi Kera, Marius Toader, Dietrich R. T. Zahn, Nobuo Ueno, K. Fujii, Cameliu Himcinschi |
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| Rok vydání: | 2009 |
| Předmět: |
Radiation
Materials science Electron energy loss spectroscopy Analytical chemistry High resolution electron energy loss spectroscopy Condensed Matter Physics Atomic and Molecular Physics and Optics Spectral line Electronic Optical and Magnetic Materials Condensed Matter::Materials Science symbols.namesake chemistry.chemical_compound chemistry Highly oriented pyrolytic graphite Perfluoropentacene symbols Molecule Physical and Theoretical Chemistry Thin film Raman spectroscopy Spectroscopy |
| Zdroj: | Journal of Electron Spectroscopy and Related Phenomena. 174:65-69 |
| ISSN: | 0368-2048 |
| Popis: | We have studied the vibrational properties of perfluoropentacene (PFP) thin films on highly oriented pyrolytic graphite (HOPG) substrates by high-resolution electron energy loss spectroscopy (HREELS) and Raman spectroscopy. The HREELS spectra showed slight but clear increase in the vibrational energies with increasing film thickness as well as with decreasing temperature of the multilayer films. In the polarization-dependent Raman spectra of a multilayer film, the depolarization ratios of all detected vibrations with the Ag irreducible representation were found to be larger than 1, indicating that the molecular structure is distorted in the multilayer. Both results suggest that there is a fairly strong intermolecular interaction in PFP multilayer films. |
| Databáze: | OpenAIRE |
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