Characteristics of Dielectric Behavior and AC Electrical Conductivity of Bulk Antimony Sulfide (Sb2S3) | ||
| Arab Journal of Nuclear Sciences and Applications | ||
| Article 11, Volume 53, Issue 4, October 2020, Pages 93-101 PDF (830.88 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ajnsa.2020.27596.1344 | ||
| Authors | ||
| hamed El-Sayed1; Hend Ali* 2; gehan salem3; Mohamed Mahmoud1 | ||
| 1Physics Department, Faculty of Education, Ain Shams University, Cairo, Egypt. | ||
| 2physic department, faculty of education , Ain shams university, Cairo, Egypt | ||
| 3physics , faculty of Education , Ain shams university, Cairo,Egypt | ||
| Abstract | ||
| The structural features and morphology of investigated Sb2S3 powder were analyzed by X-ray diffraction and scanning electron microscope techniques. The dependence of dielectric properties and ac conductivity of bulk Sb2S3 as pellet on both of frequency (102–106 Hz) and temperature (303-393 K) were studied. The dielectric constant (121.2-45.8) and dielectric loss (53.3-0.89) displayed noticeable dependence on frequency and in the investigated range of temperature 303-393 K. The frequency dependence of ac conductivity σac(ω) follows up the power relation; σac(ω) = Gωs. The frequency exponent s, diminished with the rise in temperature, implying that the correlated barrier hopping (CBH) is the predominant conduction mechanism. The ac conductivity exhibited a thermally activated nature. The localized states N(EF) values recorded in order of 1018 eV-1.cm-3 at specific temperatures for frequency of 800 Hz. Activation energy ΔE, calculated at different frequencies indicating a decrease from 117 meV to 89 meV with the increase in the frequency. | ||
| Keywords | ||
| Antimony sulfide; AC electrical conductivity; Dielectric properties; Density of localized states | ||
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