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INORGANIC LUMINESCENT COMPOSITIONS

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252 - Compositions

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Class / Patent application numberDescriptionNumber of patent applications / Date published
2523016R0 Zinc or cadmium containing 89
2523014F0 Group IV element containing 74
2523014H0 Compositions containing halogen; e.g., halides and oxyhalides 37
2523014P0 Phosphorus containing 29
2523014S0 Sulfur containing 18
252301500 Tungsten containing 6
Entries
DocumentTitleDate
20120199793Methods for producing coated phosphors and host material particles using atomic layer deposition methods - Layers of a passivating material and/or containing luminescent centers are deposited on phosphor particles or particles that contain a host material that is capable of capturing an excitation energy and transferring it to a luminescent center or layer. The layers are formed in an ALD process. The ALD process permits the formation of very thin layers. Coated phosphors have good resistance to ambient moisture and oxygen, and/or can be designed to emit a distribution of desired light wavelengths.08-09-2012
20130043430POLYCRYSTALLINE SCINTILLATOR FOR DETECTING SOFT X-RAYS - A polycrystalline scintillator for detecting soft X-rays, which comprises Ce as a light-emitting element and at least Y, Gd, Al, Ga and O, and has a garnet crystal structure, and a composition represented by the general formula of (Y02-21-2013
20130075660PHOSPHOR AND METHOD FOR PREPARING THE SAME - Disclosed is a phosphor and a method for preparing the same. The phosphor comprises a material having a general composition formula expressed by M03-28-2013
20080258109WHITE LIGHT EMITTING DIODE COMPONENT HAVING TWO PHOSPHORS AND RELATED PHOSPHOR AND FORMATION METHOD - A white light emitting diode component capable of emitting white light includes an LED chip capable of emitting luminescent light, a first phosphor for absorbing first luminescent light of the luminescent light and emitting first emission, and a second phosphor for absorbing second luminescent light of the luminescent light and emitting second emission. A blend of the luminescent light (except for the first and the second luminescent light) and the first and the second emissions forms the white light. The first phosphor has a chemical formula of (Ca10-23-2008
20130037747ALUMINATE FLUORESCENT MATERIALS AND PREPARATION METHODS THEREOF - Aluminate fluorescent materials and preparation methods thereof are provided. The fluorescent materials include a core and a shell coating the core. The core is metal nano particle, the shell is fluorescent powder represented by the following chemical formula: (Ce02-14-2013
20120175558Nano-porous precursors for opto-ceramics via novel reactive dissolution - The invention relates to a process for preparing porous glass particles suitable for use as precursor materials for production of an opto-ceramic element. The process comprises: providing particles of a soluble glass composition comprising at least one soluble component, at least one component having low solubility in an aqueous solution, and at least one lasing dopant which also has a low solubility in the aqueous solution; and immersing the particles in an aqueous solution having low solubility for said at least one component and said at least one lasing dopant, to thereby dissolve substantially all of the soluble portions of the glass particles.07-12-2012
20100163798SEMICONDUCTOR NANOPARTICLE PHOSPHOR INCLUDING NANOPARTICLE CORE COMPOSED OF GROUP-XIII AND -XV SEMICONDUCTOR AND FIRST SHELL AND SECOND SHELL FOR COATING THE SAME - A semiconductor nanoparticle phosphor includes a nanoparticle core composed of a group-XIII and -XV semiconductor, a first shell for coating the nanoparticle core, and a second shell for coating the first shell, a difference in a lattice constant between the nanoparticle core and the second shell being smaller than a difference in the lattice constant between the nanoparticle core and the first shell, or the first shell being smaller in the lattice constant than the nanoparticle core and the second shell being greater in the lattice constant than the nanoparticle core, or the first shell being greater in the lattice constant than the nanoparticle core and the second shell being smaller in the lattice constant than the nanoparticle core.07-01-2010
20100019201HYDROTHERMAL PROCESS FOR PRODUCING NANOSIZE TO MICROSIZE PARTICLES - The present invention relates to a process for producing nanosize to microsize particles of compounds of the rare earth metals and other transition metals and also for producing colloid-chemically stable sols of these particles.01-28-2010
20100044634Blue phosphor, display device including the same, and associated methods - A blue phosphor, a display device including the same, and associated methods, the blue phosphor including BaMgAl02-25-2010
20100108946ALPHA TYPE SILICON NITRIDE PHOSPHOR AND PRODUCTION METHOD THEREOF - A practical novel phosphor material composed of an α-type silicon nitride, i.e., an α-type silicon nitride phosphor containing a fluorescence-emittable element throughout an α-type silicon nitride particle from the surface to the inside, is provided. Portions having a high emittable element concentration are preferably present like islands, and the fluorescence-emittable element is preferably a lanthanide metal. A powder composed of a fluorescence-emittable element is added to silicon diimide (Si(NH)05-06-2010
20130082208STRONTIUM CERATE LUMINESCENT MATERIAL AND THE PREPARATION METHOD AND APPLICATION THEREOF - Disclosed is a strontium cerate luminescent material having a chemical formula of Sr04-04-2013
20130082207CORE-SHELL PHOSPHOR AND METHOD OF MAKING THE SAME - In accordance with one aspect of the present invention, a core−shell phosphor composition is provided that includes a core comprising magnesium oxide; and a shell at least partially enclosing the core, wherein the shell comprises a shell material having formula (I)04-04-2013
20100327228GROUP III NITRIDE SEMICONDUCTOR EPITAXIAL SUBSTRATE AND METHOD FOR MANUFACTURING THE SAME - There is provided a group III nitride semiconductor epitaxial substrate which has a suppressed level of threading dislocation in the vertical direction and excellent crystal quality, the group III nitride semiconductor epitaxial substrate including a substrate (12-30-2010
20100038591Liminous phosphor, fluorescent lamp, luminous display, and luminous molded product - There are provided a long persistent phosphor capable of keeping high persistent intensity and white persistence of especially satisfactory color purity after the phosphor is excited by ultraviolet irradiation and then the excited light is cut off, and a fluorescent lamp, a display item of long persistence and a formed product of long persistence in which the phosphor is used.02-18-2010
20090267027Infra-Red Light Emitting Phosphor - It is an object of the present invention to provide an infra-red light emitting phosphor having an excellent chemical stability and desirable light emitting properties. The infra-red light emitting phosphor is represented by a chemical formula: (A10-29-2009
20130062562ALUMINATE-BASED FLUORESCENT POWDER COATED BY METAL NANOPARTICLE AND PRODUCTION METHOD THEREOF - An aluminate-based fluorescent powder coated by metal nanoparticles. The formula thereof is (Y03-14-2013
20130062561PHOSPHOR AND METHOD OF PREPARING THE SAME - A phosphor is represented by below formula:03-14-2013
20130161560THERMOLUMINESCENT PHOSPHOR AND METHOD OF PRODUCING THE SAME - There is provided a thermoluminescent phosphor characterized in that a distribution of the emission intensity of thermoluminescence is present in a visible range that does not overlap the peak of the heating-caused emission intensity of the thermoluminescent phosphor itself and also has one peak within a temperature range in which a resin to be used as a binder can resist heat optically. There is also provided a method of producing the thermoluminescent phosphor. More specifically, there are provided a thermoluminescent phosphor that comprises lithium heptaborate as a base material and copper as a luminescent center present in the base material and which is characterized in that the distribution of the emission intensity of thermoluminescence versus temperature is a sole and monomodal distribution within the range of from 45° C. to 130° C., and a method of producing the thermoluminescent phosphor.06-27-2013
20120235094SILICA NANOFIBER/METAL OXIDE NANOCRYSTAL COMPOSITE AND METHOD FOR PRODUCING THE SAME - A silica nanofiber/metal oxide nanocrystal composite is produced by a method including associating a polymer having a linear polyethyleneimine skeleton in a water-based medium in the presence of ice, adding alkoxysilane to the water-based medium obtained in the above step to form a composite nanofiber including the associate and silica that covers the associate, while the fiber spontaneously forms a disc-shaped network structure, a step of depositing a metal oxide on a surface of the fiber by mixing the disc-shaped structure obtained in the above step with a hydrolyzable metal compound, and a step of calcining the disc-shaped. structure obtained in the step above to form a silica nanofiber through removal of the polymer in the fiber, to convert the metal oxide into a nanocrystal, and to bond the nanocrystal to the fiber. When zinc oxide is used as the metal oxide, the composite functions as a luminous body.09-20-2012
20120235093BORATE LUMINOUS MATERIAL AND PREPARATION METHOD THEREOF - Borate luminous material is provided, wherein, comprises the compound of following structural formula: M09-20-2012
20090050847Stress-Stimulated Luminescent Material, Manufacturing Method Thereof, Composite Material Including the Stress-Stimulated Luminescent Material, and Base Material Structure of the Stress-Stimulated Luminescent Material - One embodiment of the present invention is to provide a stress-stimulated luminescent material which has a unique crystal structure and which emits conventionally unachievable intense light. The stress-stimulated luminescent material of one embodiment of the present invention includes a basic structure in which a plurality of tetrahedral molecules each having an AlO02-26-2009
20110284798WHITE PHOSPHORS, METHODS OF MAKING WHITE PHOSPHORS, WHITE LIGHT EMITTING LEDS, METHODS OF MAKING WHITE LIGHT EMITTING LEDS, AND LIGHT BULB STRUCTURES - Phosphor compositions, white phosphor compositions, methods of making white phosphor compositions, tinted white phosphor compositions, methods of making tinted white phosphor compositions, LEDs, methods of making LEDs, light bulb structures, paints including phosphor compositions, polymer compositions including phosphor compositions, ceramics including phosphor compositions, and the like are provided.11-24-2011
20100090164INDIUM ARSENIDE NANOCRYSTALS AND METHODS OF MAKING THE SAME - The present invention provides high quality monodisperse or substantially monodisperse InAs nanocrystals in the as-prepared state. In some embodiments, the as-prepared substantially monodisperse InAs nanocrystals demonstrate a photoluminescence of between about 700 nm and 1400 nm.04-15-2010
20110291050LONG-LASTING PHOSPHOR CERAMICS AND MANUFACTURINGMETHOD THEREOF - Provided is a method for manufacturing MAl12-01-2011
20110291049INDIUM ARSENIDE NANOCRYSTALS AND METHODS OF MAKING THE SAME - The present invention provides high quality monodisperse or substantially monodisperse InAs nanocrystals in the as-prepared state. In some embodiments, the as-prepared substantially monodisperse InAs nanocrystals demonstrate a photoluminescence of between about 700 nm and 1400 nm.12-01-2011
20110024684SOLID SCINTILLATOR, RADIATION DETECTOR, AND X-RAY TOMOGRAPHIC IMAGING APPARATUS - The solid scintillator according to the present invention is expressed by the following formula (1):02-03-2011
20100140549METAL MIXED OXIDE, PHOSPHOR, PHOSPHOR PASTE AND LIGHT-EMITTING DEVICE - Disclosed is a metal mixed oxide which enables to obtain a phosphor exhibiting higher emission luminance. Also disclosed are a phosphor containing such a metal mixed oxide, a phosphor paste and a light-emitting device. The metal mixed oxide contains the following (1), (2) and (3) as metal elements: (1) (an) alkaline earth metal element(s) selected from Ba, C and Mg; (2) aluminum (Al); and (3) at least one element (M) selected from rare earth elements and manganese. In this connection, when the molar ratio of Ba:Ca:Mg:Al:M is expressed as a:b:c:d:e, the following relations are satisfied: 0.3≦a≦8, 0≦b<12.5, 0≦c<12.5, 11≦a+b+c≦13, 13≦d≦15, 0.0001≦e≦1.0.06-10-2010
20090152495HIGH-BRIGHTNESS YELLOW-ORANGE YELLOW PHOSPHOR FOR WARM WHITE LED - A high-brightness yellow-orange yellow phosphor for use in warm white LED (light emitting diode), the high-brightness yellow-orange yellow phosphor comprises a substrate based on a rare-earth garnet and cerium for activating said substrate. The high-brightness yellow-orange yellow phosphor has the substances of Li06-18-2009
20090152494THREE-BAND PHOSPHOR FOR MULTI-LAYER AGRICULTURAL PLASTIC FILM - A blue-green-red three-band phosphor for multilayer agricultural plastic film for converting near ultraviolet light in photosynthetic active radiation is disclosed. The substrate of the phosphor is prepared from the group IIA element SiO06-18-2009
20110193025PRODUCTION OF FINE PARTICLES OF FUNCTIONAL CERAMIC BY USING PULSED LASER - A method of forming nanometer sized fine particles of functional ceramic from a bulk functional ceramic, particularly fine particles of phosphorous ceramics from a bulk phosphor material is disclosed. The method relies on irradiation of a bulk phosphorous ceramic in a liquid with an ultrashort-pulsed-laser-fragmentation beam to thereby form nanometer sized particles of the phosphorous ceramic. The method is unique in that the generated particles retain the chemical and crystalline properties of the bulk phosphorous ceramic. The generated solutions are stable colloids from which the particles can be isolated or used as is.08-11-2011
20080210904Method of Making Green-Emitting Borate Phosphors - There is described a method for the preparation of a green-emitting terbium and cerium co-activated gadolinium magnesium pentaborate phosphor that utilizes a hydrated magnesium hexaborate as a boron source. The hydrated magnesium hexaborate preferably may be represented by the formula MgB09-04-2008
20090294731SILICATE-BASED GREEN PHOSPHORS - Novel green phosphors are disclosed having the comprise silicate-based compounds having the formula (Sr,A12-03-2009
20090242836X-RAY IMAGING PHOTOSTIMULABLE PHOSPHOR SCREEN OR PANEL - In a method of preparing a phosphor or scintillator layer to become deposited on a support, a vapor depositing step is applied from a crucible unit by heating as phosphor precursor raw materials present in said crucible, a Cs(X,X′) matrix compound and an activator or dopant precursor compound, wherein said crucible unit comprises at least a bottom and surrounding side walls as a container for phosphor precursor raw materials present in said crucible in liquefied form after heating said crucible, and wherein said Cs(X,X′) matrix compound has a higher vapor pressure than said activator or dopant precursor compound, said method comprising a step of providing said activator or dopant compound in form of a precursor raw material represented by the formula Cs10-01-2009
20110204290SILICON-BASED BLUE-GREEN PHOSPHORESCENT MATERIAL OF WHICH LUMINESCENCE PEAK CAN BE CONTROLLED BY EXCITATION WAVELENGTH AND PROCESS FOR PRODUCING SILICON-BASED BLUE-GREEN PHOSPHORESCENT MATERIAL - Provided is a silicon-based blue phosphorescent material having a longer luminescence lifetime, a high luminescence intensity, and excellent long-term stability and reproducibility. A method for producing a silicon-based blue-green phosphorescent material controllable by an excitation wavelength, which comprises a first step of anodizing the surface of silicon to prepare a nanocrystal silicon or a nanostructure silicon, a second step of processing the nanocrystal silicon or the nanostructure silicon prepared in the first step for rapid thermal oxidation, and a third step of processing the nanocrystal silicon or nanostructure silicon having been processed for rapid thermal oxidation in the second step, for high-pressure water vapor annealing. Further, a silicon-based blue-green phosphorescent material controllable by an excitation wavelength, which comprises a silicon oxide film in which numerous nanoscale crystal silicon or nanostructure silicon embedded therein, and which has a transition property between molecular energy levels through triplet excitons having a relaxation time of not shorter than 1 ms, or luminescence transition through quasi-stable excitation or trap having a relaxation time of not shorter than 1 ms.08-25-2011
20080246005Phosphor for blue-light led, blue-light led using same - A phosphor for blue-light LEDs formed by different solid solutions of (ΣLn)10-09-2008
20080251763Method For Preparing Phosphor and Phosphor - Disclosed is a method of preparing a phosphor which exhibits superior optical characteristics and improved resistance to deterioration, comprising the steps of subjecting a phosphor precursor obtained by a liquid phase process to a first calcination under an oxygen-containing atmosphere at a prescribed temperature and then subjecting the calcined phosphor precursor to a second calcination at a temperature lower than the temperature of the first calcination.10-16-2008
20120032114RED PHOSPHOR AND PLASMA DISPLAY PANEL INCLUDING SAME - A red phosphor includes yttrium (Y), gadolinium (Gd), an alkaline-earth metal element, and europium (Eu). A plasma display panel (PDP) includes the red phosphor.02-09-2012
20100140548Nanoaggregate composition and method for making - A nanoaggregate composition and method for making nanoaggregate compositions constructed with one, two, and three nanoparticle building blocks includes coating the building blocks with a concentration of polyvinylpyrrolidone (PVP) molecules based on a known relationship between the concentration and an extent of aggregation of the building blocks, and producing nanoaggregates from the building blocks comprising a mixture of single-core nanoaggregates, double-core nanoaggregates, and triple-core nanoaggregates as a function of the extent of aggregation.06-10-2010
20090050848METAL HYDROXY CARBONATE NANOPARTICLE COATED PHOSPHOR AND METHOD FOR PREPARING THE SAME - Disclosed herein are a metal hydroxy carbonate nanoparticle-coated phosphor and a preparation method thereof. The phosphor coated with metal hydroxy carbonate nanoparticles exhibit improved thermal stability and an increased luminance lifespan, when applied to display devices, e.g., PDPs and lamps.02-26-2009
20110140042High-luminosity stress-stimulated luminescent material emitting ultraviolet light, manufacturing method thereof, and usage thereof - One embodiment of the present invention provides (i) a luminant having a unique crystal structure so as to exhibit high luminosity and (ii) a manufacturing method thereof. Further, the present invention discloses (I) a luminant which exhibits ultraviolet luminescence and (II) a manufacturing method thereof. The inventors developed a stress-stimulated luminescent material which exhibits high luminosity by using a compound having a structure obtained by inserting alkali metal ions and alkali earth metal ions into a base material structure constituted of polyhedral-structure molecules and partially substituting the alkali metal ions and alkaline earth metal ions by rare earth metal ions, transition metal ions, group-III metal ions, or group-IV metal ions. Further, the inventors developed a stress-stimulated luminescent material which exhibits high-luminosity stress-stimulated ultraviolet luminescence by adding specific metal ions such as Ce as a luminescent center to the aforementioned stress-stimulated luminescent material.06-16-2011
20090250663PHOSPHOR COMPOSITION AND METHOD FOR PRODUCING THE SAME, AND LIGHT-EMITTING DEVICE USING THE SAME - A light-emitting device is produced using a phosphor composition containing a phosphor host having as a main component a composition represented by a composition formula: aM10-08-2009
20090256115COLLOIDAL DISPERSIONS OF RARE-EARTH BORATES, PREPARATION THEREOF AND LUMINOPHORES PRODUCED THEREFROM - Colloidal dispersions of rare-earth borates include a liquid phase and borate colloids dispersed therein, these colloids having a mean hydrodynamic diameter of at most 200 nm and consisting essentially of elementary particles having a mean size of less than 100 nm; such dispersions are prepared by: (a) reacting a rare-earth oxide with a controlled amount of a water-soluble monovalent acid, having a pKa of from 2.5 to 5.0; (b) heating the medium thus obtained; (c) adding boric acid to the medium obtained and heating the resulting mixture; and (d) separating the solid product from the liquid medium thus obtained, and redispersing same in a liquid phase (the subject borates are useful luminophores, especially for the manufacture of luminescent transparent materials).10-15-2009
20100148120LIGHT-EMITTING APPARATUS, PHOSPHORESCENT PORTION, AND METHOD OF PRODUCING THE SAME - A light-emitting apparatus composed of a light source that emits primary light and a phosphor that absorbs the primary light and emits secondary light offers high brightness, low power consumption, and a long lifetime while minimizing adverse effects on the environment. The phosphor is formed of a III-V group semiconductor in the form of fine-particle crystals each having a volume of 2 800 nm06-17-2010
20090072196RED PHOSPHOR AND METHOD OF PREPARING THE SAME - Provided is a red phosphor which is excellent in emission efficiency by a long wavelength UV excitation source and has a fine and uniform particle size. The red phosphor includes a compound represented by (Li.sub.(2−z)−xM.sub.x)(AO.sub.4).sub.y:Eu.sub.z,Sm.sub.q and a flux wherein M is K, Mg, Na, Ca, Sr, or Ba, A is Mo or W, 0.ltoreq.x.ltoreq.2, 0.5.ltoreq.y.ltoreq.5, 0.01.ltoreq.z.ltoreq.1.5, and 0.001.ltoreq.q.ltoreq.1.0. Provided is also a method of preparing the red phosphor.03-19-2009
20100193739ACTIVE OPTOCERAMICS WITH CUBIC CRYSTAL STRUCTURE, METHOD OF PRODUCTION OF THE OPTOCERAMICS, AND USES THEREOF - The transparent polycrystalline optoceramic has single grains with a symmetric cubic crystal structure and at least one optically active center. The optoceramic has the following formula: A08-05-2010
20100193737METHOD FOR PREPARING NANOCRYSTALLINE GERMANIUM IN GEO2 AND FREESTANDING GERMANIUM NANOPARTICLES - Methods for preparing nc-Ge/GeO08-05-2010
20120126173LUMINOUS SUBSTANCES BASED ON EU2+-(CO-)DOPED MIXED GARNET CRYSTALS AND PRODUCTION AND USE THEREOF - The invention relates to luminous substances which contain Eu05-24-2012
20100219376RED PHOSPHOR MATERIAL AND MANUFACTURING METHOD THEREOF - A red phosphor material and a manufacturing method thereof are provided. The red phosphor material is represented by formula A09-02-2010
20110127466GREEN PHOSPHOR AND DISPLAY DEVICE INCLUDING THE SAME - A green phosphor including a compound represented by Formula 1 (Y06-02-2011
20100133469RED EMITTING LUMINESCENT MATERIALS - The invention relates to an improved red light emitting material of the formula M06-03-2010
20110084235PHOSPHOR AND MANUFACTURING METHOD THEREFORE, AND LIGHT EMISSION DEVICE USING THE PHOSPHOR - To provide a phosphor having an emission spectrum with a broad peak in a range from green color to yellow color, having a broad and flat excitation band capable of using lights of broad range from near ultraviolet/ultraviolet to blue lights as excitation lights, and having excellent emission efficiency and luminance. The problem is solved by providing the phosphor expressed by a general composition formula MmAaBbOoNn:Z (where element M is one or more kinds of elements having bivalent valency, element A is one or more kinds of elements having tervalent valency, element B is one or more kinds of elements having tetravalent valency, O is oxygen, N is nitrogen, and element Z is one or more kinds of elements acting as the activator.), satisfying 4.0<(a+b)/m<7.0, a/m≧0.5, b/a>2.5, n>o, n=2/3m+a+4/3b−2/3o, and having an emission spectrum with a peak wavelength of 500 nm to 650 nm when excited by light in a wavelength range from 300 nm to 500 nm.04-14-2011
20100163797Thulium-Containing Fluorescent Substance For White Light Emitting Diode And Manufacturing Method Thereof - Disclosed is a thulium-containing fluorescent substance for a white light emitting diode represented by a following chemical formula 1, (Chemical Formula 1) (M1-X-J7Eu07-01-2010
20100193738ACTIVE OPTOCERAMICS WITH CUBIC CRYSTAL STRUCTURE, METHOD OF PRODUCTION OF THE OPTOCERAMICS, AND USES THEREOF - The transparent polycrystalline optoceramic has single grains with a symmetric cubic crystal structure and at least one optically active center. The optoceramic has the following formula: A08-05-2010
20100012899Method of preparing metallic oxide phosphor - A method for preparing a metal oxide phosphor contemplates preparing a solution including a metal precursor compound and an ionic material and heating the solution under pressure using microwaves.01-21-2010
20100065779Iodide single crystal, method for production the iodide single crystal, and scintillator comprising the iodide single crystal - An object of the invention is to provide an iodide single crystal material that provides a scintillator material for the next-generation TOF-PET, and a production process for high-quality iodide single crystal materials.03-18-2010
20110101274PRODUCTION PROCESS OF LONG-LASTING PHOSPHOR - The present invention provides a production process for the production of an MAl05-05-2011
20110068303SUBMICRONIC BARIUM AND MAGNESIUM ALUMINATE PHOSPHORS - Submicronic barium and magnesium aluminates, useful as phosphors, are in the form of a liquid-phase suspension of substantially monocrystalline particles having an average particle size ranging from 80 to 400 nm; such aluminates are prepared by a process that includes: providing a liquid mixture containing compounds of aluminum and of other elements that are part of the aluminate composition; drying the mixture by atomization; calcining the dried product in a reducing atmosphere and wet-grinding this product.03-24-2011
20120119148METHOD OF MANUFACTURING PHOSPHOR TRANSLUCENT CERAMICS AND LIGHT EMITTING DEVICES - Disclosed herein is a method of increasing the luminescence efficiency of a translucent phosphor ceramic. Other embodiments are methods of manufacturing a phosphor translucent ceramic having increased luminescence. Another embodiment is a light emitting device comprising a phosphor translucent ceramic made by one of these methods.05-17-2012
20120119146Hot-Pressed Transparent Ceramics and Ceramic Lasers - A transparent polycrystalline ceramic having scattering and absorption loss less than 0.2/cm over a region comprising more than 95% of the originally densified shape and a process for fabricating the same by hot pressing. The ceramic can be any suitable ceramic such as yttria (Y05-17-2012
20080251765FLUORESCENT SUBSTANCE AND LIGHT-EMITTING DEVICE USING THE SAME - An field effect transistor includes a first semiconductor region, a gate electrode insulatively disposed over the first semiconductor region, source and drain electrodes between which the first semiconductor region is sandwiched, and second semiconductor regions each formed between the first semiconductor region and one of the source and drain electrodes, and having impurity concentration higher than that of the first semiconductor region, the source electrode being offset to the gate electrode in a direction in which the source electrode and the drain electrode are separated from each other with respect to a channel direction, and one of the second semiconductor regions having a thickness not more than a thickness with which the one of second semiconductor regions is completely depleted in the channel direction being in thermal equilibrium with the source electrode therewith.10-16-2008
20110133125INORGANIC PHOSPHOR PARTICLE - Inorganic phosphor particles are provided, each of which containing: a matrix including at least one compound selected from the group consisting of II Group-XVI Group compounds, XII Group-XVI Group compounds, and mixed crystals thereof; and at least one metal element selected from the group consisting of metal elements belonging to Groups 6 to 11 in second transition series and third transition series of the periodic table, the metal element forming a luminescent center including wherein at least 30% of all the inorganic phosphor particles are particles each having at least 10 stacking fault planes at intervals of at most 5 nm.06-09-2011
20120199792Novel Cherkasky's synthetic diamonds and diamond-like materials and methods and devices for production thereof - The object of the invention is to increase the yield of the HPHT—(High-Pressure High-Temperature)—Technology for production of synthetic diamonds and diamond-like materials as well as to achieve the continuous production of large amounts or quantities of synthetic diamonds with perfect or high quality.08-09-2012
20130009097OXYNITRIDE PHOSPHOR AND METHOD OF MANUFACTURING THE SAME - An oxynitride phosphor and a method of manufacturing the same are revealed. The formula of the oxynitride phosphor is Ba01-10-2013
20080217579Light-emitting apparatus, phosphor and method of producing it - A light-emitting apparatus composed of a light source that emits primary light and a phosphor that absorbs the primary light and emits secondary light offers high brightness, low power consumption, and a long lifetime while minimizing adverse effects on the environment. The phosphor is formed of a III-V group semiconductor in the form of fine-particle crystals each having a volume of 2 800 nm09-11-2008
20110186778Temperature-Stable Oxynitride Phosphor and Light Source Comprising a Corresponding Phosphor Material - A thermally stable phosphor made of the M-Si—O—N system, having a cation M and an activator D, M being represented by Ba or Sr alone or as a mixture and optionally also being combined with at least one other element from the group Ca, Mg, Zn, Cu. The phosphor is activated with Eu or Ce or Tb alone or as a mixture, optionally in codoping with Mn or Yb. The activator D partially replaces the cation M. The phosphor is produced from the charge stoichiometry MO—SiO08-04-2011
20120145962SOLID STATE SCINTILLATOR MATERIAL, SOLID STATE SCINTILLATOR, RADIATION DETECTOR, AND RADIATION INSPECTION APPARATUS - In an embodiment, a solid state scintillator material includes a composition represented by a general formula: (Gd06-14-2012
20090026417Gallium Nitride Crystal Growth Method, Gallium Nitride Crystal Substrate, Epi-Wafer Manufacturing Method, and Epi-Wafer - Affords gallium nitride crystal growth methods, gallium nitride crystal substrates, epi-wafers, and methods of manufacturing the epi-wafers, that make it possible to curb cracking that occurs during thickness reduction operations on the crystal, and to grow gallium nitride crystal having considerable thickness. A gallium nitride crystal growth method in one aspect of the present invention is a method of employing a carrier gas, a gallium nitride precursor, and a gas containing silicon as a dopant, and by hydride vapor phase epitaxy (HVPE) growing gallium nitride crystal onto an undersubstrate. The gallium nitride crystal growth method is characterized in that the carrier-gas dew point during the gallium nitride crystal growth is −60° C. or less.01-29-2009
20120012787CERAMIC SCINTILATOR BODY AND SCINTILLATION DEVICE - A scintillation device includes a ceramic scintillator body that includes a polycrystalline ceramic scintillating material comprising gadolinium. The polycrystalline ceramic scintillating material is characterized by a pyrochlore crystallographic structure. A method of producing a ceramic scintillator body includes preparing a precursor solution including a rare earth element precursor, a hafnium precursor, and an activator (Ac) precursor. The method also includes obtaining a precipitate from the solution and calcining the precipitate to produce a polycrystalline ceramic scintillating material including the rare earth element, hafnium, and the activator, and having a pyrochlore titrating the precursor solution into the precipitant solution structure.01-19-2012
20090001319Material Composition for Producing Blue Phosphor by Excitation of UV Light and Method for Making the same - A phosphor material composition for producing blue phosphor by the excitation of UV light and a method for making the same. The phosphor material is an alkaline-earth silicates compound with a chemical formula of A01-01-2009
20120061615Rare Earth Ion Doped Silicate Luminescence Glass and Preparation Method Thereof - A rare earth ion doped silicate luminescence glass and preparation method thereof are provided. The luminescence glass is the material with the following formula: aM03-15-2012
20120119147Hot-Pressed Transparent Ceramics and Ceramic Lasers - A transparent polycrystalline ceramic having scattering and absorption loss less than 0.2/cm over a region comprising more than 95% of the originally densified shape and a process for fabricating the same by hot pressing. The ceramic can be any suitable ceramic such as yttria (Y05-17-2012
20120211700PROCESS FOR PRODUCING BETA-SIALON FLUORESCENT MATERIAL - Provided is a production method of a β-type sialon fluorescent substance, where luminescence intensity can be improved without adding a metal element other than elements composing a β-type sialon fluorescent substance. Namely, in a production method of a fluorescent substance containing an optically-active element as the luminescence center in a crystal of nitride or acid nitride, a β-type sialon fluorescent substance is produced by a burning process for heat-treating a mixture including metal compound powder and an optically-active element compound; a high-temperature annealing process for heat-treating the burned product after cooling under a nitrogen atmosphere; a rare-gas annealing process for heat-treating the high-temperature annealed product under a rare gas atmosphere; and a process for treating the rare-gas treated product with an acid.08-23-2012
20100288973Oxynitride phosphor and production process thereof, and light-emitting device using oxynitride phosphor - An oxynitride phosphor consisting of a crystal containing at least one or more of Group II elements selected from the group consisting of Be, Mg, Ca, Sr, Ba and Zn, at least one or more of Group IV elements selected from the group consisting of C, Si, Ge, Sn, Ti, Zr and Hf, and a rare earth element being an activator R, thereby providing a phosphor which is excited by an excitation light source at an ultraviolet to visible light region and which has a blue green to yellow luminescence color that is wavelength converted.11-18-2010
20100207065METHOD OF MANUFACTURING PHOSPHOR TRANSLUCENT CERAMICS AND LIGHT EMITTING DEVICES - Disclosed herein is a method of increasing the luminescence efficiency of a translucent phosphor ceramic. Other embodiments are methods of manufacturing a phosphor translucent ceramic having increased luminescence. Another embodiment is a light emitting device comprising a phosphor translucent ceramic made by one of these methods.08-19-2010
20120132856OXIDE LUMINESCENT MATERIALS ACTIVATED BY TRIVALENT THULIUM AND THEIR PREPARATIONS - The present invention relates to oxide luminescent materials activated by trivalent thulium and their preparations. The luminescent materials are the compounds with the following general formula: (RE05-31-2012
20120168678Phosphor for Scintillator - Provided is a phosphor for scintillator that can absorb radiation and convert it into visible light, and which has a short fluorescence decay time. The phosphor contains a lutetium sulfide-containing host material and an activator agent ion, for example, a phosphor comprising a composition represented by the general formula (Lu07-05-2012
20100051868LUMINOPHORES AND CORE-SHELL LUMINOPHORE PRECURSORS - A novel type of green luminophore containing mixed rare-earth phosphates is produced from precursor particles having a mean diameter ranging from 1.5 to 15 microns; such particles have an inorganic core and a shell of a mixed lanthanum and/or cerium phosphate, optionally doped with terbium, evenly covering the inorganic core with a thickness greater than or equal to 300 nm.03-04-2010
20120175559PHOSPHOR PARTICLES AND MAKING METHOD - Phosphor particles are provided in the form of spherical polycrystalline secondary particles consisting of a multiplicity of primary particles, including a garnet phase having the composition: (A07-12-2012
20100270503METHOD OF MAKING PHOTOLUMINESCENT SAMARIUM-DOPED TITANIUM DIOXIDE PARTICLES - The disclosure provides a process for preparing photoluminescent samarium-doped titanium dioxide, typically in the rutile phase, comprising: precipitating, preferably at a pH of about 2 to about 3, a mixture comprising hydrated titanium oxide, a source of samarium, and a separable filtering agent to form a precipitated mixture comprising precipitated samarium-doped hydrated titanium oxide and the separable filtering agent; filtering the precipitated mixture to form a filter cake comprising the precipitated samarium-doped hydrated titanium oxide and the separable filtering agent; calcining the precipitated samarium-doped hydrated titanium oxide and separable filtering agent at a temperature of greater than about 300° C. to form a mixture comprising samarium-doped titanium dioxide and the separable filtering agent; and removing the separable filtering agent to recover samarium-doped titanium dioxide particles.10-28-2010
20090057611PHOSPHOR AND PROCESS FOR PRODUCING THE SAME - A green phosphor that exhibits a green luminance higher than those of conventional rare-earth-activated sialon phosphors, having durability higher than those of conventional oxide phosphors, and that emits light by ultraviolet or visible light. There is provide a phosphor comprising a crystal of oxynitride or nitride with β-type Si3N4 crystal structure and, solid dissolved therein, Eu, which phosphor emits a fluorescence having a peak at a wavelength falling within the wavelength region of 500 to 600 nm upon excitation source irradiation. The luminous intensity within the wavelength region of 500 to 600 nm is high, so that the phosphor is excellent as a green phosphor.03-05-2009
20120228551BETA-SIALON, METHOD FOR PRODUCING SAME AND LIGHT-EMITTING DEVICE USING SAME - β-Sialon comprising Eu09-13-2012
20120319049EU2+-ACTIVATED ALUMINATES NANOBELTS, WHISKERS, AND POWDERS, METHODS OF MAKING THE SAME, AND USES THEREOF - Embodiments of the present disclosure relate to visible luminescent phosphors, visible luminescent nanobelt phosphors, methods of making visible luminescent phosphors, methods of making visible luminescent nanobelt phosphors, mixtures of visible luminescent phosphors, methods of using visible luminescent phosphors, waveguides including visible luminescent phosphors, white light emitting phosphors, and the like.12-20-2012
20080265209RED PHOSPHOR COMPOSITION AND METHOD OF PREPARING THE SAME - The invention relates to a red phosphor composition and a method of preparing the same, and more particularly, a red phosphor which includes Al10-30-2008
20120326086RED PHOSPHOR, METHOD FOR PRODUCING RED PHOSPHOR, WHITE LIGHT SOURCE, ILLUMINATING DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE - A compound is provided containing silicon, aluminum, strontium, europium, nitrogen, and oxygen is used that enables a red phosphor having strong luminous intensity and high luminance to be obtained, and that enables the color gamut of a white LED to be increased with the use of the red phosphor. The red phosphor contains an element A, europium, silicon, aluminum, oxygen, and nitrogen at the atom number ratio of the following formula: [A12-27-2012
20110260108METHOD OF PRODUCING M-C-N-O BASED PHOSPHOR - A method of producing an M-C—N—O based phosphor with reduced non-uniform emission and improved color purity is provided. The method of producing an M-C—N—O based phosphor comprising a group IIIB element (M), carbon (C), nitrogen (N) and oxygen (O) comprises: heating a mixture comprising a group IIIB element-containing compound and a nitrogen-containing organic compound to form a pyrolysate; disintegrating the resulting pyrolysate-containing product; and firing the disintegrated product.10-27-2011
20120286206GREEN LUMINESCENT MATERIAL OF TERBIUM DOPED GADOLINIUM BORATE AND PREPARing METHOD THEREOF - A green luminescent material of terbium doped gadolinium borate is provided. The luminescent material has a formula of M11-15-2012
20120138856PHOSPHOR COMPOSITIONS - A phosphor composition comprises a host lattice, a dopant and a decay modifying component different from the dopant and the host lattice and effective to alter the rate of decay of the radiation emitted by the phosphor composition in response to excitation by photons of a given energy. The decay modifying component is added to the phosphor composition in a predetermined amount between 1 and 10,000 parts per million of the composition. By varying the amount of the decay modifying component added to the phosphor composition, it is possible to produce a set of phosphor compositions with different, controlled rates of decay of the radiation emitted by the compositions.06-07-2012
20130015402RARE EARTH ION DOPED LANTHANUM GALLATE LUMINOUS MATERIAL CONTAINING METAL PARTICLES AND PREPARATION METHOD THEREOFAANM Zhou; MingjieAACI ShenzhenAACO CNAAGP Zhou; Mingjie Shenzhen CNAANM Ma; WenboAACI ShenzhenAACO CNAAGP Ma; Wenbo Shenzhen CNAANM Lv; TingAACI ShenzhenAACO CNAAGP Lv; Ting Shenzhen CN - A rare earth ion doped lanthanum gallate luminous material containing metal particles and preparation method thereof are provided. The chemical formula of the lanthanum gallate luminous material is La01-17-2013
20080251764Carbidonitridosilicate Luminescent Substance - The invention relates to a luminescent substance consisting of a doped host lattice which absorbs at least one part of exciting radiation when it is excited by a high-energy radiation, thereby releasing an energy-poor emission radiation. The host lattice is embodied in the form of a carbidonitridosilicate-based compound. An illuminant which is used for producing white light and comprises a light emitting element and said luminescent substance are also disclosed.10-16-2008
20080246004SCINTILLATOR NANOPARTICLES AND METHOD OF MAKING - A nanomaterial comprising a plurality of nanoparticles. The plurality of nanoparticles includes at least one dopant and at least one of a metal oxide, a metal phosphate, a metal silicate, a metal hafnate, a metal aluminate, and combinations thereof. The metal is one of an alkali earth metal, a lanthanide, and a transition metal. The plurality of nanoparticles is formed by forming a homogenized precursor solution of at least one metal precursor and at least one dopant precursor, adding a fuel and optionally at least one of a phosphate source, a silicate source, a hafnate source, and an aluminate source to the precursor solution, removing water from the precursor solution to leave a reaction concentrate, and igniting the reaction concentrate to form a powder comprising the nanomaterial. In one embodiment, the nanomaterial is a scintillator material.10-09-2008
20080237539Green-emitting phosphors and process for producing the same - This invention relates to a green phosphor and a process for producing the same, wherein the phosphor is represented by a chemical formula: M(Tb10-02-2008
20130140492BORATE LUMINESCENT MATERIALS, PREPARATION METHODS AND USES THEREOF - Borate luminescent materials, preparation methods and uses thereof are provided. The luminescent materials are represented by the general formula: (In06-06-2013
20080197321Phosphor, its Production Method, and Light Emitting Apparatus - An object of the present invention is to provide an inorganic phosphor, particularly, an oxynitride phosphor containing alkaline earths which has a higher luminance than that of conventional sialon phosphors activated with a rare earth, and is chemically stable.08-21-2008
20080197320White Light Emitting Device - The present invention relates to a phosphor having excellent emission brightness by inclusion of Si or Fe in the phosphor having a TbAG:Ce composition, and a white LED. The white photoluminescent device in accordance with the present invention comprises at least one light-emitting diode emitting light with a wavelength of 430 to 470 nm and a phosphor having a composition of TbAG:Ce, wherein the phosphor having a composition of TbAG:Ce is composed of a compositional formula of (Tb08-21-2008
20130153823RARE EARTH-ALUMINIUM/GALLATE BASED FLUORESCENT MATERIAL AND MANUFACTURING METHOD THEREOF - A rare earth-aluminium/gallate based fluorescent material and manufacturing method thereof are provided. Said rare earth-aluminium/gallate based fluorescent material comprises a core, and a shell which coats said core, wherein said core is a metal nanoparticle, and said shell is a fluorescent powder of chemical formula (Y06-20-2013
20130153824Silicon Nitride Powder for Siliconnitride Phosphor, Sr3Al3Si13O2N21 Phosphor and B-Sialon Phosphor Both Obtained Using Same, and Processes for Producing These - Provided is a silicon nitride powder for siliconitride phosphor having high luminance, a Sr06-20-2013
20130153825LUMINSCENT MATERIAL FOR SOLID-STATE SOURCES OF WHITE LIGHT - A luminescent material, containing yttrium oxide, oxides of rare-earth metals, as well as aluminium, gallium and indium oxides in a ratio that produces compounds corresponding to the general formula:06-20-2013
20110303873SOLID SCINTILLATOR, RADIATION DETECTOR, AND TOMOGRAPH - An object of the present invention is to provide a solid scintillator having short afterglow and high output, and a radiation detector and a tomograph using the solid scintillator. A solid scintillator according to the present invention is a solid scintillator comprising a polycrystal containing a crystal of a Gd garnet structure oxide having a composition ratio represented by the following formula (1):12-15-2011
20110309302INORGANIC LUMINESCENT MATERIAL FOR SOLID-STATE WHITE-LIGHT SOURCES - The invention pertains to the field of lighting technology using InGaN-based blue LEDs and specifically to luminescent materials containing yttrium oxide, oxides of rare earth metals as well as aluminium oxide in proportions that yield a luminescent material whose average composition fits the general formula (Y12-22-2011
20120018675ALUMINUM OXIDE PHOSPHOR AND METHOD FOR PRODUCING THE SAME - The present invention provides an Al—C—O based phosphor using neither heavy metal nor rare metal and composed of elements with high environmental compatibility and excellent economic efficiency, wherein the wavelength of the peak intensity of the emission spectrum can be changed without changing the basic composition. An aluminum oxide phosphor which comprises aluminum (Al), carbon (C), and oxygen (O) respectively in an amount of 30 mol %01-26-2012
20120018674Emitting Phosphor - An emitting phosphor is provided, which can be excited by a blue LED or a near-UV LED, emit visible light and increase internal quantum efficiency. An emitting phosphor is proposed, comprising an orthorhombic crystal system comprising Ga and S, wherein the orthorhombic crystal system has, in an XRD pattern using a Cu Kα beam, a proportion of the diffraction intensity of the maximum peak appearing at diffraction angle 2θ=16.0 to 18.0° with respect to the diffraction intensity of the maximum peak appearing at diffraction angle 2θ=23.6 to 24.8° of 0.4 or greater.01-26-2012
20120018673Garnet Material, Method for its Manufacturing and Radiation-Emitting Component Comprising the Garnet Material - A material, comprising a garnet having the composition represented by the formula A01-26-2012
20130099162BORATE BASED RED LIGHT EMITTING MATERIAL AND PREPARATION METHOD THEREOF - A borate based red light emitting material is provided, which comprises a core and a shell covering the said core. Said core is nanometer metal particle, and the shell is fluorescent powder having the chemical formula of (Y04-25-2013
20130207040Novel Long Decay Phosphors - The present invention relates to long decay phosphors comprising rare earth activated strontium aluminates and methods for producing them. The phosphors comprise a matrix of the formula Sr08-15-2013

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