公开(公告)号：US20180265778A1

公开(公告)日：2018-09-20

申请号：US15709557

申请日：2017-09-20

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Fangming DU ,  James Edward MURPHY ,  Srinivas Prasad SISTA ,  Clark David NELSON ,  Jenna Marie BALDESARE

IPC: C09K11/61 ,  H01L33/50

Abstract: A process for preparing a Mn+4 doped phosphor of formula I includes gradually adding a first solution comprising a source of M and HF and a second solution comprising a source of Mn to a reactor, in the presence of a source of A and an anion selected from phosphate, sulfate, acetate, and combinations thereof, to form a product liquor comprising the Mn+4 doped phosphor. The process also includes gradually discharging the product liquor from the reactor while volume of the product liquor in the reactor remains constant. A is Li, Na, K, Rb, Cs, or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; and y is 5, 6 or 7.

公开(公告)号：US20190292448A1

公开(公告)日：2019-09-26

申请号：US16348763

申请日：2017-11-15

Applicant: GENERAL ELECTRIC COMPANY

Inventor： Digamber Gurudas POROB ,  Prasanth Kumar NAMMALWAR ,  Srinidhi RAMACHANDRA ,  Matthew David BUTTS ,  James Edward MURPHY

IPC: C09K11/02 ,  C09K11/61 ,  H01L33/50

Abstract: A process for coating a phosphor of formula I: Ax[MFy]:Mn4+ includes combining the phosphor of formula I in particulate form with a first solution including a compound of formula II: Ax[MFy] to form a suspension and combining a second solution with the suspension, the second solution including a precursor including an element selected from the group consisting of calcium, strontium, magnesium, yittrium, barium, scandium, lanthanum, and combinations thereof. A population of particles having a core including a phosphor of formula I and a manganese-free composite coating disposed on the core, and a lighting apparatus (10) including the population of particles are also presented.

公开(公告)号：US20180134956A1

公开(公告)日：2018-05-17

申请号：US15566061

申请日：2015-05-18

Applicant: General Electric Company

Inventor： James Edward MURPHY ,  Anant Achyut SETLUR

IPC: C09K11/77 ,  H01L33/50

CPC classification number: C09K11/779 ,  C09K11/7733 ,  C09K11/7773 ,  H01L33/502

Abstract: A process for treating a luminescent halogen-containing material includes contacting the luminescent halogen-containing material with an atmosphere comprising a halogen-containing oxidizing agent for a period of at least about two hours. The luminescent halogen-containing material has a composition other than (i) Ax[MFy]:Mn4+, where A is Li, Na, K, Rb, Cs, or a combination thereof; M is Si, Ge, Sn, Ti, Zr, Al, Ga, In, Sc, Y, La, Nb, Ta, Bi, Gd, or a combination thereof; x is the absolute value of the charge of the [MFy] ion; and y is 5, 6 or 7; (ii) Zn2[MF7]:Mn4+, where M is selected from Al, Ga, In, and combinations thereof; (iii) E[MF6]:Mn4+, where E is selected from Mg, Ca, Sr, Ba, Zn, and combinations thereof; and where M is selected from Ge, Si, Sn, Ti, Zr, and combinations thereof; or (iv) Ba0.65Zr0.35F2.70:Mn4+

公开(公告)号：US20180051207A1

公开(公告)日：2018-02-22

申请号：US15555719

申请日：2016-03-02

Applicant: General Electric Company

Inventor： Digamber Gurudas POROB ,  Anant Achyut SETLER ,  Prasanth Kumar NAMMALWAR ,  James Edward MURPHY

IPC: C09K11/57 ,  C09K11/61 ,  C01B33/10 ,  C01G17/00 ,  C01G23/00 ,  C01G45/00 ,  C25B15/08 ,  C25B1/14

Abstract: A process for synthesizing a Mn4+ doped phosphor of formula I by electrolysis is presented. The process includes electrolyzing a reaction solution comprising a source of manganese, a source of M and a source of A. One aspect relates to a phosphor composition produced by the process. A lighting apparatus including the phosphor composition is also provided. Ax[MFy]:Mn4+ (I) where, A is Li, Na, K, Rb, Cs, 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; x is the absolute value of the charge of the [MFy] ion; and y is 5, 6 or 7.

公开(公告)号：US20160289553A1

公开(公告)日：2016-10-06

申请号：US15171098

申请日：2016-06-02

Applicant: GENERAL ELECTRIC COMPANY

Inventor： William Winder BEERS ,  Jianmin HE ,  Fangming DU ,  James Edward MURPHY ,  William Erwin COHEN ,  Clark David NELSON ,  Cynthia Susan LINK

IPC: C09K11/61 ,  H01L33/50

Abstract: A method includes obtaining particles of a phosphor precursor of formula Ax[MFy]:Mn4+, reducing sizes of the particles of the phosphor precursor by wet milling the particles and annealing the particles that are wet milled by contacting the particles with a fluorine-containing oxidizing agent. Additionally, a manganese doped complex fluoride phosphor prepared by this method is provided. A lighting apparatus and backlight device that include manganese-doped phosphor prepared by this method also are provided.

Abstract translation: 一种方法包括获得式Ax [MFy]：Mn4 +的荧光体前体的颗粒，通过湿磨研磨颗粒来还原荧光体前体颗粒的尺寸，并通过使颗粒与含氟氧化物 代理商 另外，提供了通过该方法制备的锰掺杂复合氟化物荧光体。 还提供了包括通过该方法制备的掺锰磷光体的照明装置和背光装置。