کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5403290 | 1392756 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparison study of the luminescent properties of the white-light long afterglow phosphors: CaxMgSi2O5+x:Dy3+(x=1, 2, 3)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Comparison study of the luminescent properties of the white-light long afterglow phosphors: CaxMgSi2O5+x:Dy3+(x=1, 2, 3) Comparison study of the luminescent properties of the white-light long afterglow phosphors: CaxMgSi2O5+x:Dy3+(x=1, 2, 3)](/preview/png/5403290.png)
چکیده انگلیسی
A series of Dy3+-doped calcium magnesium silicate phosphors: CaMgSi2O6:Dy3+, Ca2MgSi2O7:Dy3+, and Ca3MgSi2O8:Dy3+ with white long-lasting afterglow were prepared and investigated. The characteristic intra-configurational 4f emissions of Dy3+ were observed in the emission spectra as well as the afterglow spectra under ultraviolet excitation. The combination of the 480Â nm blue emission corresponding to the 4F9/2â6H15/2 transition and the 575Â nm yellow emission corresponding to the 4F9/2â6H13/2 transition yielded white-light emission. The white-coloured afterglow emission can last more than 1Â h for most of the samples under study. The concentration dependence of the ratio of the yellow emission intensity with blue emission intensity was also examined and found to be varied for the different hosts. The thermoluminescence spectra above room temperature are employed for the discussion of the origin of the traps and the mechanism of the persistent luminescence.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 129, Issue 5, May 2009, Pages 531-535
Journal: Journal of Luminescence - Volume 129, Issue 5, May 2009, Pages 531-535
نویسندگان
Yonghu Chen, Xuerui Cheng, Miao Liu, Zeming Qi, Chaoshu Shi,