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    • 8. 发明公开
    • β형 사이알론 형광체
    • BETA型SIALON荧光物质
    • KR1020070116697A
    • 2007-12-10
    • KR1020077026854
    • 2006-05-10
    • 코쿠리츠켄큐카이하츠호징 붓시쯔 자이료 켄큐키코덴카 주식회사
    • 히로사키나오토에모토히데유키이부키야마마사히로
    • C09K11/59C09K11/64
    • C09K11/0883C09K11/7734Y02B20/181
    • This invention provides a beta-type sialon fluorescent substance that can realize enhanced brightness of a white luminescent diode using blue to ultraviolet light as a light source. The beta-type sialon fluorescent substance comprises beta-type sialon represented by general formula: Si 6-zAlzOzN8-z as a matrix material. In the beta-type sialon fluorescent substance, Eu is present in a solid solution form as a luminescence center. Z in the composition represented by the general formula is not less than 0.24 and not more than 0.42, the content of Eu is 0.05 at% to 0.25 at%, and the content of the beta-type sialon, which dissolves Eu in a solid solution, is not less than 90% by mass. The beta-type sialon fluorescent substance is preferably a powder having an average particle diameter of not less than 1 mum and not more than 20 mum. A white LED having good luminescent characteristics can be realized by using a blue or ultraviolet light emitting diode as an excitation light source which is used in combination with a fluorescent substance that emits yellow or red light.
    • 本发明提供一种β型赛隆荧光物质,其可以实现使用蓝色至紫外光作为光源的白色发光二极管的增强的亮度。 β型赛隆荧光物质包含由通式Si 6-z Al z O z N 8-z作为基质材料表示的β型赛隆。 在β型赛隆荧光物质中,Eu作为发光中心以固溶体形式存在。 Z由通式表示的组成不小于0.24且不大于0.42,Eu的含量为0.05at%至0.25at%,并且将溶解于固溶体中的Eu的β型赛隆的含量 ,不小于90质量%。 β型赛隆荧光体优选为平均粒径为1μm以上20μm以下的粉末。 通过使用蓝色或紫外线发光二极管作为与发出黄色或红色光的荧光物质组合使用的激发光源,可以实现具有良好发光特性的白色LED。