The study of optical parameters and DC conductivity of Se _(100-x)Hg _x thin films

Neetu; Bahishti A.A.; Zulfequar M.

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The study of optical parameters and DC conductivity of Se _(100-x)Hg _x thin films

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Se 100-xHg x bulk samples have been prepared by conventional melt quenching technique. The thin films of the material have been prepared on glass substrate using the thermal evaporation technique. The transmission spectra has been studied to measure the optical constants like absorption coefficient (α), extinction coefficient (K), optical band gap (E _g), Urbach energy (E _e). The DC conductivity (σ _(dc)) of Se _(100-x)Hg _x has been also studied to find the activation energy (Δ ~(Ea)). The optical band gap increases and Urbach energy first increases then decreases with increase in Hg concentration. DC conductivity and activation energy increases with increase in Hg concentration. These materials are found suitable for the optical disk materials and in optoelectronic devices due to their high absorption coefficient and dependence of reflectance on composition.

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来源
《Physica, B. Condensed Matter》 |2012年第18期|3868-3871|共4页
作者
Neetu; Bahishti A.A.; Zulfequar M.;
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作者单位

Department of Physics, Jamia Millia Islamia, New Delhi 110025, India;

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原文格式 PDF
正文语种英语
中图分类物理学;
关键词
Chalcogenides; DC conductivity; Optical properties;

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The study of optical parameters and DC conductivity of Se _(100-x)Hg _x thin films

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