کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7124942 | 1461529 | 2014 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis and characterization of Bi doped Se-Te nanostructured thin films
ترجمه فارسی عنوان
سنتز و خصوصیات نانوکامپوزیتهای نانو ساختار بیویدئوپید سدیم
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کلمات کلیدی
نانو کلکوهناید، فیلم نازک، پراش اشعه ایکس، ثابت نوری،
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
کنترل و سیستم های مهندسی
چکیده انگلیسی
The nanostructure formation has been revealed in different types of materials and therefore an increasing interest has been witnessed in recent years to study the amorphous materials. Nano-structured materials show dramatic changes in their structural, optical and electrical characteristics due to the decrease in size below excitonic limit and provide new physical and chemical properties. In the present research work amorphous Se80Te20âxBix (x = 3 and 6) was prepared by melt quenching techniques. Nano-structured thin films of amorphous Se80Te20âxBix have been obtained using physical vapor condensation process on glass/Si wafer substrate. The morphology of amorphous Se80Te20âxBix films was scanned by employing field emission scanning electron microscope (FESEM). The optical absorption and reflection spectra of nano-structured films were inspected by UV/VIS/NIR spectrophotometer. The optical absorption analysis indicates the non-direct transitions predominate in nano-structured Se80Te20âxBix films. The extinction coefficient and absorption coefficient are found to decrease while optical energy band gap and the refractive index increase with Bi contents in Se-Te system.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Measurement - Volume 58, December 2014, Pages 325-329
Journal: Measurement - Volume 58, December 2014, Pages 325-329
نویسندگان
M.A. Alvi, A.A. Al-Ghamdi, Jamal H. Madani,