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    • 4. 发明申请
    • BETA TYPE SIALON FLUORESCENT SUBSTANCE
    • BETA型SIALON荧光物质
    • US20090050845A1
    • 2009-02-26
    • US11914272
    • 2006-05-10
    • Naoto HirosakiHideyuki EmotoMasahiro Ibukiyama
    • Naoto HirosakiHideyuki EmotoMasahiro Ibukiyama
    • C09K11/80
    • C09K11/0883C09K11/7734Y02B20/181
    • A β type Sialon fluorescent substance is disclosed that is capable of achieving enhanced brightness of a white light emitting diode using blue to ultraviolet light as a light source. In the fluorescent substance which contains not less than 90% by mass of a β type Sialon composition represented by general formula: Si6-zAlzOzN8-z as a host material wherein z is not less than 0.24 and not more than 0.42, Eu is present dissolved in solid solution as a luminescent center at a content of 0.05 to 0.2% by atom. The β type Sialon fluorescent substance is preferably in the form of a powder having an average particle size of not less than 1 μm and not more than 20 μm. A white LED of good luminescent characteristics can be obtained by using a blue or ultraviolet light emitting diode as a excitation light source in combination with a fluorescent substance that emits yellow or red light.
    • 公开了一种β型赛隆荧光物质,其能够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。 在含有不少于90质量%的由通式Si 6-z Al z O z N 8-z表示的β型Sialon组合物作为主体材料的荧光物质中,其中z不小于0.24且不大于0.42,Eu存在溶解 作为发光中心的固溶体,含量为0.05〜0.2原子%。 β型赛隆荧光物质优选为平均粒径不小于1μm且不大于20μm的粉末形式。 通过使用蓝色或紫外线发光二极管作为激发光源与发出黄色或红色光的荧光物质组合,可以获得良好发光特性的白色LED。