Preparation method for green light-excited long afterglow phosphor with warm color



The invention relates to a preparation method for green light-excited long afterglow phosphor with warm color. All the conventional red phosphors are low in luminous intensity or short in afterglow time, or cause environment pollution, so that the practical requirements cannot be met. Through the adoption of the invention, red phosphor Ba2Zn1-xS3 : xMn2+ excited by green light is coated on the surface of green long afterglow phosphor SrAl2O4 : Eu2+, Dy3+; and the thickness of the red phosphor can be controlled, so as to realize the purpose of efficient warm color long afterglow radiating with green-olivine-yellow-orange-red lights. The preparation method solves the problem that the afterglow time of the conventional directly prepared red phosphors is short, thereby being a new way for preparing warm color long afterglow materials.




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Patent Citations (3)

    Publication numberPublication dateAssigneeTitle
    CN-101081979-ADecember 05, 2007中国科学院上海硅酸盐研究所用于白光发光二极管的氧硫化物荧光粉及其制备方法
    JP-2007063366-AMarch 15, 2007Mitsui Mining & Smelting Co Ltd, 三井金属鉱業株式会社近紫外及び緑色励起用赤色蛍光体及びその製造方法、及び赤色発光素子
    US-2008171229-A1July 17, 2008General Electric CompanyMethod of producing a palette of colors for persistent phosphors and phosphors made by same

NO-Patent Citations (2)

    XINMIN ZHANG等: "Mn2+-doped Ba2ZnS3 phosphor as a potentialluminescent material for white LEDs", 《JOURNAL OF ALLOYS AND COMPOUNDS》, vol. 441, 24 October 2006 (2006-10-24), pages 259 - 262, XP022116780
    YU-FENG LIN等: "Photoluminescent properties of Ba2ZnS3:Mn phosphors", 《JOURNAL OF ALLOYS AND COMPOUNDS》, vol. 421, 19 June 2006 (2006-06-19), pages 268 - 272

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    Publication numberPublication dateAssigneeTitle