کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5398461 | 1505891 | 2016 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel Sr2LuF7-SiO2 nano-glass-ceramics: Structure and up-conversion luminescence
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Novel transparent nano-glass-ceramics comprising RE-doped Sr2LuF7 nanocrystals have been obtained by thermal treatment of precursor sol-gel glasses. The precipitated Sr2LuF7 nanocrystals with sizes from 4.5 to 11.5Â nm, confirmed by X-Ray Diffraction and Transmission Electron Microscopy images, show a cubic phase structure. The luminescent features of Eu3+ ions, used as structural probes, evidence the distribution of RE ions into the fluoride nanocrystals. Under 980Â nm laser excitation, intense UV, vis and NIR up-conversion emissions were observed and studied in Yb3+-Tm3+, Yb3+-Er3+ and Yb3+-Ho3+ co-doped nano-glass-ceramics. These results suggest considering these nano-glass-ceramics for potential optical applications as high efficient UV up-conversion materials in UV solid state lasers, infrared tuneable phosphors and photonic integrated devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 170, Part 3, February 2016, Pages 789-794
Journal: Journal of Luminescence - Volume 170, Part 3, February 2016, Pages 789-794
نویسندگان
A.C. Yanes, J. del-Castillo, D. Luis, J. Puentes,