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2005 | 108 | 6 | 985-996
Article title

Effect of Heat Treatment on the ac Conductivity and Dielectric Properties of Ag_{33}Sb_{31}Se_{36} Thin Films

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EN
Abstracts
EN
The effect of heat treatment on the ac conductivity and dielectric properties of the melt quenched and thermally evaporated Ag_{33}Sb_{31}Se_{36} chalcogenide system are reported for the first time. The results of the alternating current conductivity σ_{ac}, the dielectric constantε_1, and the dielectric lossε_2 of the Ag_{33}Sb_{31}Se_{36} thin film samples are presented over the temperature range 303-373 K and the frequency range 0.1-100 kHz. The temperature dependence of the ac conductivity σ_{ac}(ω) and the frequency exponent s are discussed with the aim of the correlated barrier hopping model. Values of σ_{ac}(ω),ε_1, and ε_2 were found to increase with the increase in the annealing temperature due to the reduction of the number of unsaturated defects which decrease the density of localized states in the band structure.
Keywords
Contributors
  • Physics Department, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv108n605kz
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