کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1623174 | 1516412 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Co-precipitation synthesis and photo-luminescence of Y1âxAlO:Eux3+ and (GdyY1ây)0.93AlO3:Eu0.073+ powder phosphors
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
Y1âxAlO3:Eux3+ and (GdyY1ây)0.93AlO3:Eu0.073+ powder phosphors have been synthesized by co-precipitation. When the multi-component hybrid precursors are sintered at 1200 °C for 2 h non-agglomerative powder phosphors can be obtained with particle sizes ranging from 300 nm to 600 nm. Phosphor structure and morphology were examined by X-ray diffraction and field emission scanning electron microscopy. Luminescence spectra of these phosphors have been investigated in order to examine the Eu3+ doping concentration and the host matrix compositional effects on the photoluminescent behaviors. The emission spectra have a strong emission at about 614 nm corresponding to the electric dipole 5D0 â 7F2 transition of Eu3+ in all compounds. The optimum molar concentration for obtaining the highest PL intensity were x = 0.07 and y = 0.7, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 465, Issues 1â2, 6 October 2008, Pages 324-327
Journal: Journal of Alloys and Compounds - Volume 465, Issues 1â2, 6 October 2008, Pages 324-327
نویسندگان
Fang Miao, Hong-Wei Sun, Wei-ping Ma, Song Wang, Jing Zhang,