Low-frequency dielectric properties of two aromatic hydrocarbons
- 30 June 1988
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 21 (18) , 3447-3465
- https://doi.org/10.1088/0022-3719/21/18/010
Abstract
In order to discuss the link between the dielectric properties of organic molecular crystals and some of their other electrical properties, the dielectric responses of two aromatic hydrocarbons, p-terphenyl and tetrabenzofulvalene, have been measured. It is shown that the dielectric properties of both p-terphenyl and tetrabenzofulvalene are strongly dependent on the structure of the samples. A peak in the dielectric loss curves due to relaxations of charge carriers among traps has been found in both crystalline and disordered samples. Two kinds of low-frequency dispersion were found in disordered samples, both being dependent on injection of carriers from electrodes. It is shown that there is a link between release of charge carriers from traps and strong dispersion in tetrabenzofulvalene. A simple discussion of some of the experimental results is presented in terms of the many-body theory of dielectric losses in solids.Keywords
This publication has 21 references indexed in Scilit:
- Structure-dependent dielectric response of p-terphenyl thin filmsThin Solid Films, 1987
- Interpretation of the dielectric properties of p-terphenylJournal of Physics C: Solid State Physics, 1987
- Dielectric response ofp-terphenylJournal of Materials Science, 1986
- Dielectric relaxation in p-terphenyl crystalsMaterials Science and Engineering, 1986
- A link between the drift mobility and dielectric losses in some organic compounds: computer simulationJournal of Physics C: Solid State Physics, 1986
- Low Frequency Dielectric Properties of Some Organic MaterialsPhysica Status Solidi (a), 1986
- A cluster approach to the structure of imperfect materials and their relaxation spectroscopyProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1983
- Non-exponential decay in dielectrics and dynamics of correlated systemsNature, 1979
- Some electrical properties of polycrystalline tetracene layersThin Solid Films, 1979
- Exalted Distortion Polarizations of Some Colored HydrocarbonsJournal of the American Chemical Society, 1953