کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5404180 1505932 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Template synthesis and luminescent properties of nano-sized YAG:Tb phosphors
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Template synthesis and luminescent properties of nano-sized YAG:Tb phosphors
چکیده انگلیسی
Terbium-activated Y3Al5O12 (YAG:Tb) phosphor nanoparticles with homogeneous grain size and crystallinity have been prepared at 700 °C by a novel gel-network coprecipitation route using gelatin as a template. The products were characterized by using TG-DTA, XRD and TEM techniques. The diffraction profile of YAG:Tb nanoparticles could be indexed as a garnet structure and exhibited peak broadening phenomenon, as revealed by X-ray diffraction (XRD) data. The products appeared to be regular spherical or elliptical and sizes ranged from 40 to 55 nm. Furthermore, the photoluminescence spectra of the YAG:Tb nanoparticles were investigated to determine the energy level of electron transition related to luminescence processes. The effects of Tb concentration and the average grain size on the PL spectra were also studied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Luminescence - Volumes 119–120, July–October 2006, Pages 237-241
نویسندگان
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