کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5466412 | 1517991 | 2017 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of temperature dependent optical modes in GexAs35 â xSe65 thin films: Structure specific Raman, FIR and optical absorption spectroscopy
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this article, we quest for understanding the temperature dependent optical modes present in a-GexAs35 â xSe65 thin films. Strikingly, temperature dependent Raman spectra provide direct evidence of softening of AsSe3/2 pyramidal units and Se clusters at higher temperatures. In a stark contrast, GeSe4/2 corner and edge sharing tetrahedral units remain rigid against the temperature variation. Subsequently, FIR measurements at room temperature also provide significant insights on the optical modes in consistent with Raman data. In addition to that, our experimental results present fascinating optical features-thermally and compositionally tunable optical absorption spectra. We found that structural and optical parameters are closely related and help us in understanding the various physico-chemical properties which can eventually contribute to the field of optics and optoelectronics.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 621, 1 January 2017, Pages 76-83
Journal: Thin Solid Films - Volume 621, 1 January 2017, Pages 76-83
نویسندگان
Pritam Khan, Arinjoy Bhattacharya, Abin Joshy, Vasant Sathe, Uday Deshpande, K.V. Adarsh,