Color stable manganese-doped phosphors

Lyons, Robert Joseph; Setlur, Anant Achyut; Deshpande, Anirundha Rajendra; Grigorov, Ljudmil Slavchev

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
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B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
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B29 - working of plastics
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B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
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B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
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C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
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C05 - fertilisers
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C12 - biochemistry
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C14 - skins
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C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
C40 - combinatorial technology
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D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
D99 - subject matter not otherwise provided for in this section
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E01 - construction of roads, railways, or bridges
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F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
F04 - positive - displacement machines for liquids
F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
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F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
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F42 - ammunition
F99 - subject matter not otherwise provided for in this section
G - physics
G01 - measuring
G02 - optics
G03 - photography
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G06 - computing
G07 - checking-devices
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G09 - education
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G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
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Y04 - information or communication technologies having an impact on other technology areas
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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:: Lyons, Robert Joseph; Setlur, Anant Achyut; Deshpande, Anirundha Rajendra; Grigorov, Ljudmil Slavchev

Issue Date:: 2014-04-29

Research Org.:: GE Global Research, Niskayuna, New York (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1130051

Patent Number(s):: 8710487

Application Number:: 13/561,192

Assignee:: General Electric Company (Niskayuna, NY)

Patent Classifications (CPCs):: C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES

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C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
C09K11/617 - {Silicates}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
H01L2224/48091 - Arched
H01L2224/48247 - connecting the wire to a bond pad of the item
H01L2924/00012 - Relevant to the scope of the group, the symbol of which is combined with the symbol of this group
H01L2924/00014 - the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
H01L2924/181 - Encapsulation
H01L33/502 - {Wavelength conversion materials}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
Y02B20/00 - Energy efficient lighting technologies

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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.

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                    Lyons, Robert Joseph, Setlur, Anant Achyut, Deshpande, Anirundha Rajendra, & Grigorov, Ljudmil Slavchev. Color stable manganese-doped phosphors.  United States.

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                    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.

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@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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Patent:

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Works referencing / citing this record:

Color stable red-emitting phosphors
patent, July 2017

Murphy, James Edward; Setlur, Anant Achyut; Garcia, Florencio
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Color stable red-emitting phosphors
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Process for preparing red-emitting phosphors
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Title: Color stable manganese-doped phosphors

Abstract

Citation Formats

Red emitting phosphor materials for use in LED and LCD applications patent, April 2008

Red line emitting phosphor materials for use in LED applications patent, March 2009

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Semiconductor Light-Emitting Device as Well as Image Display and Liquid Crystal Display Employing the Same patent-application, April 2010

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Photoluminescent properties of cubic K2MnF6 particles synthesized in metal immersed HF/KMnO4 solutions journal, December 2010

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