کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1536733 | 996573 | 2012 | 4 صفحه PDF | دانلود رایگان |

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.
Journal: Optics Communications - Volume 285, Issue 5, 1 March 2012, Pages 665–668