کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9778190 | 1510574 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A polymer solution process for synthesis of (Y,Gd)3Al5O12:Ce phosphor particles
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سرامیک و کامپوزیت
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چکیده انگلیسی
Cerium-doped yttrium-gadolinium aluminum garnet, (Y,Gd)3Al5O12:Ce, shortened here to (Y,Gd)AG:Ce, was systematically prepared by a polymer complex method, using high molecular weight polyethylene glycol (PEG). Without PEG, only large flakes several micrometers in size containing nearly pure (Y,Gd)AlO3 were obtained. Adding PEG dramatically reduced the particle size. However, the (Y,Gd)AG phase was not obtained by merely adding PEG. Instead, mainly (Y,Gd)2O3 and small amount of Ce2O3 were obtained. Simultaneous use of PEG and a flux (simple salt) such as BF2 resulted in the formation of small YAG particles. The presence of the (Y,Gd)AG phase results in intense yellow-green luminescence. By selecting various heating routes, the fractions of cubic and hexagonal phases were controlled. It was found that the luminescence intensity is proportional to the fraction of cubic phase, and is probably independent of the hexagonal phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 8â9, 1 April 2005, Pages 697-704
Journal: Journal of Non-Crystalline Solids - Volume 351, Issues 8â9, 1 April 2005, Pages 697-704
نویسندگان
Mikrajuddin Abdullah, Kikuo Okuyama, I. Wuled Lenggoro, Syuichi Taya,