Title: Carbonitride based phosphors and light emitting devices using the same

Abstract

Disclosed herein is a novel group of carbidonitride phosphors and light emitting devices which utilize these phosphors. In certain embodiments, the present invention is directed to a novel family of carbidonitride-based phosphors expressed as follows: Ca.sub.1-xAl.sub.x-xySi.sub.1-x+xyN.sub.2-x-xyC.sub.xy:A; (1) Ca.sub.1-x-zNa.sub.zM(III).sub.x-xy-zSi.sub.1-x+xy+zN.sub.2-x-xyC.sub.xy:- A; (2) M(II).sub.1-x-zM(I).sub.zM(III).sub.x-xy-zSi.sub.1-x+xy+zN.sub.2-x- -xyC.sub.xy:A; (3) M(II).sub.1-x-zM(I).sub.zM(III).sub.x-xy-zSi.sub.1-x+xy+zN.sub.2-x-xy-2w/- 3C.sub.xyO.sub.w-v/2H.sub.v:A; and (4) M(II).sub.1-x-zM(I).sub.zM(III).sub.x-xy-zSi.sub.1-x+xy+zN.sub.2-x-xy-2w/- 3-v/3C.sub.xyO.sub.wH.sub.v:A, (4a) wherein 0<x<1, 0<y<1, 0.ltoreq.z<1, 0.ltoreq.v<1, 0<w<1, x+z<1, x>xy+z, and 0<x-xy-z<1, M(II) is at least one divalent cation, M(I) is at least one monovalent cation, M(III) is at least one trivalent cation, H is at least one monovalent anion, and A is a luminescence activator doped in the crystal structure.

Inventors:

Li, Yuanqiang; Tian, Yongchi; Romanelli, Michael Dennis

Issue Date:

Tue Aug 20 00:00:00 EDT 2013

Research Org.:

Lightscape Materials, Inc. (Princeton, NJ)

Sponsoring Org.:

USDOE

OSTI Identifier:

1092758

Patent Number(s):

8512599

Application Number:

12/839,365

Assignee:

Lightscape Materials, Inc. (Princeton, NJ)

Patent Classifications (CPCs):

C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

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C - CHEMISTRY C04 - CEMENTS C04B - LIME, MAGNESIA

C04B2235/3208 - Calcium oxide or oxide-forming salts thereof, e.g. lime
C04B2235/3229 - Cerium oxides or oxide-forming salts thereof
C04B2235/3418 - Silicon oxide, silicic acids, or oxide forming salts thereof, e.g. silica sol, fused silica, silica fume, cristobalite, quartz or flint
C04B2235/3826 - Silicon carbides
C04B2235/3852 - Nitrides, e.g. oxynitrides, carbonitrides, oxycarbonitrides, lithium nitride, magnesium nitride
C04B2235/386 - Boron nitrides
C04B2235/3865 - Aluminium nitrides
C04B2235/3873 - Silicon nitrides, e.g. silicon carbonitride, silicon oxynitride
C04B2235/3891 - Silicides, e.g. molybdenum disilicide, iron silicide
C04B2235/40 - Metallic constituents or additives not added as binding phase
C04B2235/445 - Fluoride containing anions, e.g. fluosilicate
C04B2235/761 - Unit-cell parameters, e.g. lattice constants
C04B35/58 - based on borides, nitrides, {i.e. nitrides, oxynitrides, carbonitrides or oxycarbonitrides} or silicides {
C04B35/584 - based on silicon nitride
C04B35/6268 - {characterised by the applied pressure or type of atmosphere, e.g. in vacuum, hydrogen or a specific oxygen pressure}

C - CHEMISTRY C09 - DYES C09K - MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

C09K11/0883 - {Arsenides

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

H01L2224/48247 - connecting the wire to a bond pad of the item
H01L2224/8592 - Applying permanent coating, e.g. protective coating
H01L33/502 - {Wavelength conversion materials}

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DOE Contract Number:  

EE0003245

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY