کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1461012 989614 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photoluminescence properties and energy transfer of a novel bluish-green tunable KSrY(PO4)2:Ce3+, Tb3+ phosphor
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Photoluminescence properties and energy transfer of a novel bluish-green tunable KSrY(PO4)2:Ce3+, Tb3+ phosphor
چکیده انگلیسی

A series of single-phased emission Ce3+/Tb3+-coactivated KSrY(PO4)2 (KSYP) phosphors were synthesized by solid-state reaction. The crystal structures, photoluminescence properties, fluorescence lifetimes and energy transfer of KSYP:Ce3+, Tb3+ were systematically investigated in detail. Wavelength-tunable bluish-green light could be realized by coupling the emission bands centered at 401 and 543 nm ascribed to the contribution from Ce3+ and Tb3+, respectively. Intense green emission was realized in the KSrY0.59(PO4)2:0.01 mol Ce3+, 0.40 mol Tb3+ phosphors on the basis of the high efficiency energy transfer from Ce3+ to Tb3+ with an efficiency of over 68%. The energy transfer mechanism from Ce3+ to Tb3+ in the KSYP host was ascribed to the exchange interaction. These results indicated that the KSYP:Ce3+, Tb3+ phosphors have potential applications in the field of lighting and display due to their effective excitation in the ultraviolet range.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ceramics International - Volume 40, Issue 7, Part B, August 2014, Pages 10407–10413
نویسندگان
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