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1. (WO2018089100) CORE-SHELL MATERIALS WITH RED-EMITTING PHOSPHORS

Pub. No.:    WO/2018/089100    International Application No.:    PCT/US2017/051706
Publication Date: Fri May 18 01:59:59 CEST 2018 International Filing Date: Sat Sep 16 01:59:59 CEST 2017
IPC: C09K 11/02
C09K 11/61
C09K 11/77
H01L 33/50
Applicants: GENERAL ELECTRIC COMPANY
Inventors: MURPHY, James Edward
BEERS, William,Winder
COHEN, William Erwin
Title: CORE-SHELL MATERIALS WITH RED-EMITTING PHOSPHORS
Abstract:
A coated phosphors that include a shell comprising a first Mn4+doped phosphor of formula (I) Ax [MFy]:Mn4+directly disposed on a core comprising a second phosphor. The second phosphor is a material other than a compound of formula (I) or formula (II) Ax [MFy]wherein A is, independently at each occurrence, Li, Na, K, Rb, Cs, or a combination thereof; M is, independently at each occurrence, 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.