کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7900261 1510365 2018 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Optical properties of Pb1 − xSnxSe quantum dots (QDs) in silicate glasses dictated by GeO2 concentrations
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Optical properties of Pb1 − xSnxSe quantum dots (QDs) in silicate glasses dictated by GeO2 concentrations
چکیده انگلیسی
Effects of SnO addition on the optical properties of Pb1 − xSnxSe quantum dots (QDs) were investigated as a function of GeO2 content [GeO2] in germanosilicate glasses. Addition of SnO resulted in a red-shift of the absorption bands from QDs at [GeO2] < 20 mol%, but in a blue-shift at [GeO2] ≥ 20 mol%. Addition of GeO2 to the glass caused a large decrease in its viscosity, so it increased diffusion coefficient (D); as a result the amount of Sn in Pb1 − xSnxSe QDs increased. D of Sn2 + was ~ 560 times higher in the glasses with [GeO2] = 40 mol% than in the glass with no GeO2. The differences in Sn content in QDs affected their bandgap.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 482, 15 February 2018, Pages 177-182
نویسندگان
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