کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10428587 | 909254 | 2015 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of thermal annealing on the structural and optical properties of amorphous Se75âxTe25Sbx thin films by thermal evaporation method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of thermal annealing on the structural and optical properties of amorphous Se75âxTe25Sbx thin films by thermal evaporation method Effect of thermal annealing on the structural and optical properties of amorphous Se75âxTe25Sbx thin films by thermal evaporation method](/preview/png/10428587.png)
چکیده انگلیسی
Se75âxTe25Sbx (x = 0, 3, 6, and 9) bulk glasses were obtained using conventional melt quenching technique. Thin films of these glasses were prepared by vacuum evaporation technique at a base pressure of 10â6 Torr on to well cleaned glass substrates. a-Se75âxTe25Sbx thin films were annealed at different temperatures below their crystallization temperatures for 2 h. The structure of as prepared and annealed films has been studied by X-ray diffraction. The X-ray pattern indicates that the as-prepared films are amorphous in nature but it shows some polycrystalline structure in amorphous phase after annealing. The optical band gap of as prepared and annealed films as a function of photon energy in the wavelength range 400-1100 nm has been studied. It is found that the optical band gap decreases with increasing annealing temperatures in the present glassy system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 126, Issue 6, March 2015, Pages 635-639
Journal: Optik - International Journal for Light and Electron Optics - Volume 126, Issue 6, March 2015, Pages 635-639
نویسندگان
D.K. Dwivedi, H.P. Pathak, R.K. Shukla, A. Kumar,