کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5441149 | 1510374 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spectroscopic properties of Ce3Â +/Tb3Â + co-doped high silica scintillating glass
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Ce3Â +/Tb3Â + co-doped high silica scintillating glasses were prepared by sintering porous glasses in CO reducing atmosphere. The uniformly distributed nanopores in the prepared glass are quite suitable for absorbing Tb3Â + and Ce3Â + ions due to large specific surface. The main mechanism of absorbing of Tb3Â + and Ce3Â + in high silica glass was hydrogen bonds. The calculated doping concentration of Ce3Â + in the glass is agreed with measured densities, excitation spectrum as well as emission spectrum at room temperature. The emission spectrum proves that the intensity of Tb3Â + could be enhanced by Ce3Â +, and specially the intensity of highest peaks at 543Â nm have been increased to 10 times stronger than those without Ce3Â +. Moreover, with the Ce3Â + concentration increased to 0.2Â mol/L, the luminescence intensity increased to a maximum and then decreased due to the concentration quenching of Ce3Â +. The process of energy transfer between Ce3Â + and Tb3Â + and the concentration quenching were analyzed thoroughly in high silica glass.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 473, 1 October 2017, Pages 54-58
Journal: Journal of Non-Crystalline Solids - Volume 473, 1 October 2017, Pages 54-58
نویسندگان
Qingmin Chen, Jingxin Ding, Guanpeng Yao, Hai Lin, Chun Li, Yanyan Zhou, Fanming Zeng,