کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7839740 | 1505860 | 2018 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of energy transfer mechanism and luminescence properties in Eu3+ and Sm3+ co-doped ZnWO4 phosphors
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
A series of ZnWO4:x%Eu3+, y%Sm3+ phosphors were synthesized by a facile hydrothermal method. The samples were well crystallized in the pure monoclinic wolframite structure with P2/c space group. The produced phosphors have exhibited an intense red emission, moreover, the red emission intensity was enhanced gradually with the increase of the Sm3+ content. The energy transfer (ET) of Sm3+âEu3+ was proved by the photoluminescence (PL) spectra and decay curves. The average lifetime of Eu3+ emission was also decreased from 1.11â¯ms in ZnWO4:5%Eu3+ to 0.90â¯ms in ZnWO4:5%Eu3+, 2%Sm3+, which demonstrates that there exists ET from Sm3+ to Eu3+. These results show that the samarium ions doping greatly enhances the emission dominance of Eu3+ at 617â¯nm.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 202, October 2018, Pages 57-64
Journal: Journal of Luminescence - Volume 202, October 2018, Pages 57-64
نویسندگان
Minzhu Zhao, Yun Liu, Suiyan Ma, Dinghan Liu, Kai Wang,