2003
DOI: 10.1016/j.vacuum.2003.08.008
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Conduction and dielectric polarization in Se thin films

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Cited by 35 publications
(9 citation statements)
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“…At low frequencies, the interactions between the dipoles were high while this interaction was weakened with increasing frequency yielding in a remarkable reduction in dielectric loss [42]. Regarding the polarization mechanism, it can be emphasized that interface polarization is dominant at lower frequencies while other mechanisms such as electronic and ionic exist at higher frequencies [43][44][45]. At high frequency, the imaginary part of permittivity becomes less sensitive to both frequency and temperature and tended to be stabilized as reported earlier [46].…”
Section: Conductivity and Permitivity Measurementsmentioning
confidence: 99%
“…At low frequencies, the interactions between the dipoles were high while this interaction was weakened with increasing frequency yielding in a remarkable reduction in dielectric loss [42]. Regarding the polarization mechanism, it can be emphasized that interface polarization is dominant at lower frequencies while other mechanisms such as electronic and ionic exist at higher frequencies [43][44][45]. At high frequency, the imaginary part of permittivity becomes less sensitive to both frequency and temperature and tended to be stabilized as reported earlier [46].…”
Section: Conductivity and Permitivity Measurementsmentioning
confidence: 99%
“…The increase of exciton activation energy in nanosemiconductors due to 3 r (K j ) reduction would significantly influence optical absorption and transport properties of the devices. Both the ac conductivity and dielectric susceptibility of amorphous Se films drop with thickness in the range of 15e850 [599]. The complex dielectric constant decreases when the frequency is increased and the temperature is decreased in the range of 300 and 350 K. Carrier motion is suggested to be the dominant mechanism in both ac polarization and dc conduction.…”
Section: Introductionmentioning
confidence: 96%
“…Increasing thickness shows increasing effect on dielectric constant as shown in Fig.1. The number of dipoles increases with increasing thickness [19]. In both temperature processes it is observed that there are two relaxation regions in the investigated frequency range.…”
Section: Resultsmentioning
confidence: 73%