کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9951545 | 1646487 | 2019 | 18 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Spectroscopic investigations of calcium fluoroapatites doped with Bi3+
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
The spectral and dynamical properties of Bi3+ in the calcium fluorophosphates Ca5(PO4)3F and Ca5(VO4)3F are investigated at room and liquid nitrogen temperature. The data are interpreted at the light of recent semi-empirical models that allow calculating the energy of A-like (isolated Bi3+), D-like (metal-metal charge transfer) and pair-like transitions from the knowledge of the crystal structure of the host lattices. It is concluded that the attribution of the luminescence features to isolated Bi3+ ions is not always an obvious option and that the luminescence can also be very satisfactorily interpreted in terms of charge transfer processes, either within Bi3+- Bi3+ pairs in Ca5(PO4)3F-Bi3+ or within Bi3+- Bi3+ and Bi3+-V5+ pairs in the newly reported Ca5(VO4)3F -Bi3+.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volume 205, January 2019, Pages 237-242
Journal: Journal of Luminescence - Volume 205, January 2019, Pages 237-242
نویسندگان
Philippe Boutinaud,