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Title: Color stable manganese-doped phosphors

Abstract

A lighting apparatus capable of emitting white light includes a semiconductor light source; and a phosphor material radiationally coupled to the light source. The phosphor material includes a color-stable Mn.sup.+4 doped phosphor prepared by a process including providing a phosphor of formula I; A.sub.x[MF.sub.y]:Mn.sup.+4 I and contacting the phosphor in particulate form with a saturated solution of a composition of formula II in aqueous hydrofluoric acid; A.sub.x[MF.sub.y]; II wherein A is Li, Na, K, Rb, Cs, NR.sub.4 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; R is H, lower alkyl, or a combination thereof; x is the absolute value of the charge of the [MF.sub.y] ion; and y is 5, 6 or 7. In particular embodiments, M is Si, Ge, Sn, Ti, Zr, or a combination thereof.

Inventors:
; ; ;
Issue Date:
Research Org.:
General Electric Company, Niskayuna, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1130051
Patent Number(s):
8,710,487
Application Number:
13/561,192
Assignee:
General Electric Company (Niskayuna, NY)
DOE Contract Number:  
EE0003251
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 Jul 30
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Lyons, Robert Joseph, Setlur, Anant Achyut, Deshpande, Anirundha Rajendra, and Grigorov, Ljudmil Slavchev. Color stable manganese-doped phosphors. United States: N. p., 2014. Web.
Lyons, Robert Joseph, Setlur, Anant Achyut, Deshpande, Anirundha Rajendra, & Grigorov, Ljudmil Slavchev. Color stable manganese-doped phosphors. United States.
Lyons, Robert Joseph, Setlur, Anant Achyut, Deshpande, Anirundha Rajendra, and Grigorov, Ljudmil Slavchev. Tue . "Color stable manganese-doped phosphors". United States. https://www.osti.gov/servlets/purl/1130051.
@article{osti_1130051,
title = {Color stable manganese-doped phosphors},
author = {Lyons, Robert Joseph and Setlur, Anant Achyut and Deshpande, Anirundha Rajendra and Grigorov, Ljudmil Slavchev},
abstractNote = {A lighting apparatus capable of emitting white light includes a semiconductor light source; and a phosphor material radiationally coupled to the light source. The phosphor material includes a color-stable Mn.sup.+4 doped phosphor prepared by a process including providing a phosphor of formula I; A.sub.x[MF.sub.y]:Mn.sup.+4 I and contacting the phosphor in particulate form with a saturated solution of a composition of formula II in aqueous hydrofluoric acid; A.sub.x[MF.sub.y]; II wherein A is Li, Na, K, Rb, Cs, NR.sub.4 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; R is H, lower alkyl, or a combination thereof; x is the absolute value of the charge of the [MF.sub.y] ion; and y is 5, 6 or 7. In particular embodiments, M is Si, Ge, Sn, Ti, Zr, or a combination thereof.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {4}
}

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Works referenced in this record:

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journal, December 2010

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