کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1616209 1516371 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optical properties change in Sb40S40Se20 thin films by light-induced effect
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Optical properties change in Sb40S40Se20 thin films by light-induced effect
چکیده انگلیسی

Thin films of Sb40Se20S40 with thickness 1000 nm were prepared by thermal evaporation technique. The amorphous nature of the thin films was verified by X-ray diffractometer. The chemical composition of the deposited thin films was examined by energy dispersive X-ray analysis (EDAX). The changes in optical properties due to the influence of laser radiation on amorphous thin films of Sb40Se20S40 glassy alloy were calculated from absorbance spectra as a function of photon energy in the wavelength region 450–900 nm. Analysis of the optical absorption data shows that the rule of non-direct transitions predominates. It has been observed that laser-irradiation of the films leads to a decrease in optical band gap while increase in absorption coefficient. The decrease in the optical band gap is explained on the basis of change in nature of films due to disorderness. The optical changes are supported by X-ray photoelectron spectroscopy and Raman spectroscopy.


► Amorphous nature of as-prepared and illuminated Sb40Se20S40 films are carried out by XRD.
► The composition of Sb40Se20S40 thin film of 1000 nm was checked by EDAX.
► The non-direct transition is responsible for the optical behavior.
► Laser-irradiation of the films leads to a decrease in optical band gap.
► The optical changes are supported by X-ray photoelectron spectroscopy and Raman spectroscopy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 522, 5 May 2012, Pages 172–177
نویسندگان
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