Phosphor, its preparation method and light emitting devices using the same
    8.
    发明申请
    Phosphor, its preparation method and light emitting devices using the same 有权
    荧光体及其制备方法和使用其的发光装置

    公开(公告)号:US20090050918A1

    公开(公告)日:2009-02-26

    申请号:US12232604

    申请日:2008-09-19

    IPC分类号: H01L33/00 C09K11/79

    摘要: A phosphor can be excited by UV, purple or blue light LED, its preparation method, and light emitting devices incorporating the same. The phosphor contains rare earth, silicon, alkaline-earth metal, halogen, and oxygen, as well as aluminum or gallium. Its General formula of is aLn2O3.MO.bM′2O3.fSiO2.cAXe: dR, wherein Ln is at least one metal element selected from a group consisting of Sc, Y, La, Pr, Nd, Gd, Ho, Yb and Sm; M is at least one metal element selected from a group consisting of Ca, Sr and Ba; M′ is at least one metal element selected from Al and Ga; A is at least one metal element selected from a group consisting of Li, Na, K, Mg, Ca, Sr and Ba; X is at least one element selected from F and Cl; R is at least one metal element selected from a group consisting of Ce, Eu, Tb and Mn; 0.01≦a≦2, 0.35≦b≦4, 0.01≦c≦1, 0.01≦d≦0.3, 0.01≦f≦3, 0.6≦e≦2.4. The phosphor has broad emitting range, high efficiency, better uniformity and stability. A light emitting device is obtained by incorporating the phosphor into a UV, purple or blue light emitting device.

    摘要翻译: 可以通过紫外线,紫色或蓝色光LED,其制备方法和包含该荧光体的发光装置激发荧光体。 荧光体含有稀土,硅,碱土金属,卤素和氧,以及铝或镓。 其通式为aLn2O3.MO.bM'2O3.fSiO2.cAXe:dR,其中Ln是选自Sc,Y,La,Pr,Nd,Gd,Ho,Yb和Sm中的至少一种金属元素 ; M是选自Ca,Sr和Ba中的至少一种金属元素; M'是选自Al和Ga中的至少一种金属元素; A是选自Li,Na,K,Mg,Ca,Sr和Ba中的至少一种金属元素; X是选自F和Cl中的至少一种元素; R是选自Ce,Eu,Tb和Mn中的至少一种金属元素; 0.01 <= a <= 2,0.35 <= b <= 4,0.01 <= c <= 1,0.01 <= d <= 0.3,0.01 <= f <= 3,0.6 <= e <= 2.4。 荧光体具有广泛的发光范围,高效率,更好的均匀性和稳定性。 通过将荧光体掺入UV,紫色或蓝色发光器件中来获得发光器件。