Title:
COATED RED LINE EMITTING PHOSPHORS
Document Type and Number:
WIPO Patent Application WO/2018/093832
Kind Code:
A3
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.
Inventors:
POROB DIGAMBER (US)
NAMMALWAR PRASANTH (IN)
RAMACHANDRA SRINIDHI (IN)
BUTTS MATTEWS (US)
MURPHY JAMES (US)
NAMMALWAR PRASANTH (IN)
RAMACHANDRA SRINIDHI (IN)
BUTTS MATTEWS (US)
MURPHY JAMES (US)
Application Number:
PCT/US2017/061702
Publication Date:
October 18, 2018
Filing Date:
November 15, 2017
Export Citation:
Assignee:
GEN ELECTRIC (US)
International Classes:
C09K11/59; C09K11/61; H01L33/50; H05B33/14
Domestic Patent References:
| WO2012015581A1 | 2012-02-02 | |||
| WO2007064416A1 | 2007-06-07 |
Foreign References:
| US4829188A | 1989-05-09 | |||
| US20130343997A1 | 2013-12-26 | |||
| US20140327026A1 | 2014-11-06 |
Other References:
See also references of EP 3541891A4
Attorney, Agent or Firm:
DIMAURO, Peter, T. et al. (US)
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