کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5403621 | 1392762 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Luminescence properties of Ce3+and Tb3+ ions codoped strontium borate phosphate phosphors
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
The Ce3+-activated, Tb3+-activated, and Ce3+ and Tb3+ co-activated phosphors 2SrO-nB2O3-(1ân)P2O5 were synthesized by the solid-state reaction. The structures, photoluminescent spectra and dynamics of them were systemically studied. The results demonstrate that the structure of the samples with n=0.10-0.50 belongs to the hexagonal phase. When n is beyond this range, the structures are the mixed phases of α-Sr2P2O7 and Sr2B2O5. The optimum composition is determined to be n=0.25 for the 2SrO-nB2O3-(1ân)P2O5 phosphors. As n varies from 0.01 to 0.50, the lifetime of Ce3+ ion increases gradually, while the lifetime of Tb3+ ion decreases, indicating that the energy transfer efficiency decreases with the increase of n. The ET efficiency between Ce3+ and Tb3+ in the optimum composition reaches to 70%. The present results demonstrate that the Ce3+ and Tb3+ co-activated hexagonal 2SrO-0.25B2O3-0.75P2O5 powders can possibly be applied as the newly developed green efficient phosphors in the field of lighting and display.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 128, Issue 12, December 2008, Pages 2013-2018
Journal: Journal of Luminescence - Volume 128, Issue 12, December 2008, Pages 2013-2018
نویسندگان
Fang Wang, Hongwei Song, Guohui Pan, Libo Fan, Biao Dong, Lina Liu, Xue Bai, Ruifei Qin, Xinguang Ren, Zhuhong Zheng, Shaozhe Lu,