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    • 2. 发明授权
    • Light emitting device
    • 发光装置
    • US08187495B2
    • 2012-05-29
    • US12172428
    • 2008-07-14
    • Hisayoshi DaichoTakeshi IwasakiKiminori Enomoto
    • Hisayoshi DaichoTakeshi IwasakiKiminori Enomoto
    • C09K11/08C09K11/61C09K11/66
    • C09K11/7734C09K11/7739H01L33/502H01L2224/45144H01L2224/48091H01L2224/73265H01L2924/16195H01L2924/00014H01L2924/00
    • A light emitting device is provided. The light emitting device includes a light emitting element that emits ultraviolet light or short-wavelength visible light; and at least one phosphor that is excited by the ultraviolet light or short-wavelength visible light to emit visible light. The at least one phosphor includes a first phosphor including a composition represented by the formula: M1O2.aM2O.bM3X2:M4, where M1 is at least one element selected from the group consisting of Si, Ge, Ti, Zr, and Sn; M2 is at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn; M3 is at least one element selected from the group consisting of Mg, Ca, Sr, Ba, and Zn; X is at least one halogen element; M4 is at least one element essentially including Eu2+ selected from the group consisting of rare-earth elements and Mn; a is in the range of 0.1≦a≦1.3; and b is in the range of 0.1≦b≦0.25.
    • 提供了一种发光器件。 发光器件包括发射紫外光或短波长可见光的发光元件; 以及由紫外线或短波长可见光激发以发射可见光的至少一种荧光体。 所述至少一种荧光体包括第一荧光体,其包含由下式表示的组成:M1O2.aM2O.bM3X2:M4,其中M1为选自由Si,Ge,Ti,Zr和Sn组成的组中的至少一种元素; M2是选自Mg,Ca,Sr,Ba和Zn中的至少一种元素; M3是选自Mg,Ca,Sr,Ba和Zn中的至少一种元素; X是至少一个卤素元素; M4是至少一种元素,其主要包括选自稀土元素和Mn的Eu 2+; a在0.1≦̸ a≦̸ 1.3; b在0.1& nlE; b≦̸ 0.25的范围内。