کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7990485 | 1516129 | 2018 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Luminescent properties of binary MO-2SiO2 (MÂ = Ca2+, Sr2+, Ba2+) glasses doped with Ce3+, Tb3+ and Dy3+
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Luminescent properties of binary MO-2SiO2 (MÂ = Ca2+, Sr2+, Ba2+) glasses doped with Ce3+, Tb3+ and Dy3+ Luminescent properties of binary MO-2SiO2 (MÂ = Ca2+, Sr2+, Ba2+) glasses doped with Ce3+, Tb3+ and Dy3+](/preview/png/7990485.png)
چکیده انگلیسی
Binary alkali-earth silicate glasses doped with Ce3+, Tb3+, and Dy3+ were obtained by melt-quenching technique and their photo- and radio-luminescence properties were investigated. The disordered structure of the glass is responsible for an inhomogeneous broadening of the electronic radiative 5d1 energy level of Ce3+ due to their localization in several positions with different surroundings, possessing a slightly different local ligand field. The influence of glass matrix composition on the Stokes shift as a function of ionic radius of the cation was shown. The radio-luminescence spectral shapes were related to the simultaneous occurrence of emissions from all Ce3+ configurations with relative weights proportional to their abundance in the glasses. The possibility of excitation of Ce3+ in different localizations was demonstrated and confirmed by the systematic shift of emission from excitation. On the contrary, no shift was observed in the Tb3+ and Dy3+ doped glasses, thanks to the lower effect of ligand field on their radiative electronic levels.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 765, 15 October 2018, Pages 207-212
Journal: Journal of Alloys and Compounds - Volume 765, 15 October 2018, Pages 207-212
نویسندگان
Y. Tratsiak, M. Korjik, A. Fedorov, G. Dosovitsky, O. Akimova, E. Gordienko, M. Fasoli, V. Mechinsky, A. Vedda, F. Moretti, E. Trusova,