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    Process of forming phosphor particles with core shell structures
    2.
    发明授权
    Process of forming phosphor particles with core shell structures 有权
    形成具有核壳结构的荧光体颗粒的工艺

    公开(公告)号：US09321959B2

    公开(公告)日：2016-04-26

    申请号：US14467087

    申请日：2014-08-25

    Applicant: General Electric Company

    Inventor： Alok Mani Srivastava ,  Holly Ann Comanzo ,  William Winder Beers ,  Samuel Joseph Camardello ,  Digamber Gurudas Porob ,  William Erwin Cohen

    IPC: C09K11/00 ,  C09K11/77 ,  C09K11/08

    CPC classification number: C09K11/7777 ,  C09K11/02 ,  C09K11/0861 ,  C09K11/7778

    Abstract: Processes for producing particles of rare earth-containing phosphor materials, in which the particles have a core-shell structure and the shell has a lower rare earth content than the core. Such a process may include contacting a core particle with a precursor comprising Na(La,Ce,Tb)P2O7 to form a mixture, and then heating the mixture to a temperature sufficient to decompose the Na(La,Ce,Tb)P2O7 to evolve and melt an NaPO3 flux and initiate deposition of a (La,Ce,Tb)PO4 shell on each core particle in the presence of the molten NaPO3 flux.

    Abstract translation: 含有稀土含量的荧光体的粒子的制造方法，其中，粒子具有核 - 壳结构，壳的稀土含量低于核。 这种方法可以包括使核心颗粒与包含Na（La，Ce，Tb）P 2 O 7的前体接触以形成混合物，然后将混合物加热到足以分解Na（La，Ce，Tb）P 2 O 7的温度，以释放出 并熔化NaPO 3助熔剂，并在熔融的NaPO 3助熔剂存在下引发（La，Ce，Tb）PO 4壳体沉积在每个核心颗粒上。

    PROCESSES FOR PREPARING COLOR STABLE MANGANESE-DOPED COMPLEX FLUORIDE PHOSPHORS
    3.
    发明申请
    PROCESSES FOR PREPARING COLOR STABLE MANGANESE-DOPED COMPLEX FLUORIDE PHOSPHORS 有权
    制备颜色稳定的锰酸盐复合氟化物荧光体的方法

    公开(公告)号：US20150166887A1

    公开(公告)日：2015-06-18

    申请号：US14568396

    申请日：2014-12-12

    Applicant: GENERAL ELECTRIC COMPANY

    Inventor： James Edward Murphy ,  William Winder Beers ,  Robert Joseph Lyons ,  Fangming Du

    IPC: C09K11/61 ,  H01L33/50

    CPC classification number: C09K11/616 ,  H01L33/502 ,  H01L33/507 ,  H01L2224/48247 ,  H01L2224/48257 ,  H01L2924/181 ,  H01L2924/00012

    Abstract: A process for preparing a color stable Mn4+ doped complex fluoride phosphor of formula I includes Ax(M(1−m),Mnm)Fy  (I) contacting a first aqueous HF solution comprising (1−m) parts of a compound of formula HxMFy, and a second aqueous HF solution comprising m*n parts of a compound of formula Ax[MnFy], with a third aqueous HF solution comprising (1−n) parts of the compound of formula Ax[MnFy] and a compound of formula AaX, to yield a precipitate comprising the color stable Mn4+ doped complex fluoride phosphor; wherein A is Li, Na, K, Rb, Cs, NR4 or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Hf, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; R is H, lower alkyl, or a combination thereof; X is an anion; a is the absolute value of the charge of the X anion; x is the absolute value of the charge of the [MFy] ion; y is 5, 6 or 7; 0

    Abstract translation: 制备式I的颜色稳定的Mn4 +掺杂复合氟化物荧光体的方法包括与包含（1-m）份式H x M F y的化合物的第一HF水溶液接触的M 1（M（1-m），Mnm） 和包含m * n个分子式Ax [MnFy]化合物的第二HF水溶液与包含（1-n）份式Ax [MnF y]化合物和式AaX化合物的第一HF水溶液 以产生包含颜色稳定的Mn4 +掺杂的复合氟化物荧光体的沉淀物; 其中A为Li，Na，K，Rb，Cs，NR4或其组合; M是Si，Ge，Sn，Ti，Zr，Al，Ga，In，Sc，Hf，Y，La，Nb，Ta，Bi，Gd或它们的组合; R是H，低级烷基或它们的组合; X是阴离子; a是X阴离子电荷的绝对值; x是[MFy]离子的电荷的绝对值; y为5,6或7; 0

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