Article ID Journal Published Year Pages File Type
1536733 Optics Communications 2012 4 Pages PDF
Abstract

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.

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Physical Sciences and Engineering Materials Science Electronic, Optical and Magnetic Materials
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