کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1536733 996573 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of Sr2+-doping on structure and luminescence properties of BaAl2Si2O8:Eu2+ phosphors
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Effect of Sr2+-doping on structure and luminescence properties of BaAl2Si2O8:Eu2+ phosphors
چکیده انگلیسی

Sr2+ doped BaAl2Si2O8:Eu2+ phosphor was synthesized by chemical co-precipitation method. With the increase of Sr2+ concentration, the phase structure of (Ba0.965 − xSrxEu0.035)Al2Si2O8 changes from hexagonal phase to monoclinic phase owing to large activation energy in SrAl2Si2O8 system. (Ba0.965 − xSrxEu0.035)Al2Si2O8 phosphor exhibits a broad blue band peaking at 425 nm due to the 4f65d–4f7(8S7/2) transition of Eu2+ ions. The emission intensity increases, accompanied by the blue shift of emission maximum from 459 to 417 nm with the Sr2+ doping concentration increasing. The optimal concentration of Sr2+ ion is 40%, and the phosphor shows high color stability in CIE chromaticity diagram. The result indicates that Sr2+ doped phosphor not only can enhance the relative intensity but also can adjust the chromaticity coordinate.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 285, Issue 5, 1 March 2012, Pages 665–668
نویسندگان
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