کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7990079 | 1516125 | 2018 | 38 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical studies of the Ba1-XMgAl10O17:Eux phosphors synthesis by combustion route
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In the present work BaMgAl10O17:Eu phosphors were prepared successfully using the combustion route by employing urea as a fuel. The structural and luminescent properties were measured. The surface areas of the phosphors were found â¼14.8â¯m2/g and the band gap was calculated â¼5.24â¯eV. The crystallite sizes of the synthesis phosphor were found in the order of â¼70â¯nm-650â¯nm. TL studies of the discussed phosphors were carried out under UV (254â¯nm) exposure. The efficient and more intensive TL glow curve was observed under 30-min dose of UV. The TL emission spectra of the Ba0.99MgAl10O17:Eu0.01 phosphor showed the characteristic Eu2+ emission peaks â¼443â¯nm, originating from the electronic transitions 4f65d1â4f7. The phosphors showed strong blue luminescence and 89% quantum efficiency for 8mol% of Eu. Persistence phenomena of the phosphors were discussed using both TL and PL decay properties.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 769, 15 November 2018, Pages 831-842
Journal: Journal of Alloys and Compounds - Volume 769, 15 November 2018, Pages 831-842
نویسندگان
Akshkumar Verma, Ashish Verma, G.V. Bramhe, Ishwar Prasad Sahu,