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7378038 |
Process for producing phosphors
A mixed melt, which contains urea and/or a urea derivative and contains a metal compound, is prepared. The mixed melt is solidified, by heating, whereby the urea and/or urea derivative is...
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7374807 |
Nanocrystal doped matrixes
The present invention provides matrixes doped with semiconductor nanocrystals. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light...
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7335345 |
Synthesis of water soluble nanocrystalline quantum dots and uses thereof
An economic, direct synthetic method for producing water soluble QDs that are ready for bioconjugation is provided. The method can produce aqueous QDs with emission wavelengths varying from 400 nm...
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7326366 |
Method of producing inorganic semiconductor-or phosphor-primary particle and inorganic semiconductor-or phosphor-primary particle
A method of producing inorganic semiconductor- and phosphor-primary particles, which each comprises forming the particles by reacting at least one kind of precursor solution of the inorganic...
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7326365 |
Composite material including nanocrystals and methods of making
Temperature-sensing compositions can include an inorganic material, such as a semiconductor nanocrystal. The nanocrystal can be a dependable and accurate indicator of temperature. The intensity of...
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7316790 |
Sulfur-containing phosphor powders, methods for making phosphor powders and devices incorporating same
Sulfur-containing phosphor powders, methods for making phosphor powders and devices incorporating same. The powders have a small particle size, narrow particle size distribution and are...
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7311859 |
Method to produce nanocrystalline powders of oxide-based phosphors for lighting applications
Some embodiments of the present invention are directed toward nanocrystalline oxide-based phosphor materials, and methods for making same. Typically, such methods comprise a steric entrapment route...
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7297295 |
Highly bright mechanoluminescence material and process for producing the same
A novel highly bright mechanoluminescence material free from decay of luminescence brightness even if repeated stress is applied, comprising a composite semiconductor crystal of the general formula...
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7291291 |
Electroluminescent phosphor powder with D50 value of less than 12 μm and method of making
There is presented an electroluminescent phosphor powder of copper-activated zinc sulfide particles that has a size distribution with a D50 value of less than 12 μm, and more preferably less than...
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7288216 |
Method of making electroluminescent phosphors with small particle sizes and powder with D50 value of no more than 10 micrometers
An electroluminescent phosphor powder includes copper-activated zinc sulfide particles that have a size distribution with a D50 value of no more than 10 μm, where no more than 25% of the particles...
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7264751 |
Yellow ZnS-based phosphor, process of preparing the same and display device using the phosphor
A yellow ZnS-based phosphor having improved color coordinates and luminance for use in intermediate- and low-voltage display devices using improved activators and coactivators has color coordinates...
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7264671 |
Sulfur-modified zinc oxide
The present invention relates to particles or powders of a compound of formula Zn 1−y M y O 1−x S x , wherein x has a value in the range from 0.01 to 0.08, M represents a divalent metal and y...
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7261838 |
Electroluminescent phosphor
The electroluminescent phosphor of this invention is comprised of zinc sulfide activated with copper and iodine and may produce an emission with an x color coordinate from 0.145 to 0.155 and a y...
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7241399 |
Synthesis of nanoparticles
Methods for the preparation of inorganic nanoparticles capable of fluorescence, wherein the nanoparticles consist of a host material that comprises at least one dopant. The synthesis of the...
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7235190 |
Nanocluster-based white-light-emitting material employing surface tuning
A method for making a nanocrystal-based material capable of emitting light over a sufficiently broad spectral range to appear white. Surface-modifying ligands are used to shift and broaden the...
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7229332 |
Method for manufacturing white light source
A method for manufacturing a white light source provides an LED light source and a semiconductor-type phosphor with (Zn, Cd)S being the host with foreign ions added thereto as luminescence centers....
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7226547 |
Electroluminescent phosphor powders, methods for making phosphor powders and devices incorporating same
Electroluminescent phosphor powders and a method for making phosphor powders. The phosphor powders have a small particle size, narrow particle size distribution and are substantially spherical. The...
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7214330 |
Method of manufacturing phosphor powder, phosphor powder, and phosphor composition
A method of manufacturing a highly crystallized phosphor powder, comprising: making a raw material solution containing metal elements and/or semimetal elements that will be constituents of the...
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7214428 |
Highly luminescent functionalized semiconductor nanocrystals for biological and physical applications
The present invention provides for detection apparatus with functionalized fluorescent nanocrystal compositions and methods for making and using these compositions in biological detection...
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7205048 |
Functionalized fluorescent nanocrystal compositions and methods of making
The present invention provides for functionalized fluorescent nanocrystal compositions and methods for making these compositions. The compositions are fluorescent nanocrystals coated with at least...
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7198847 |
Nanocrystals
Provided herein are compositions of functionalized, fluorescent nanocrystals comprising fluorescent nanocrystals coated with an imidazole-containing compound; compositions of functionalized,...
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7175778 |
Self-aligning QCA based nanomaterials
The present application is directed to the preparation and use of a class of nanoparticles called Quantum Confined Atoms or QCA's. A QCA is a particle of material comprising a plurality of host...
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7160613 |
Stabilized semiconductor nanocrystals
A semiconductor nanocrystal associated with a polydentate ligand. The polydentate ligand stabilizes the nanocrystal.
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7135130 |
Electroluminescent phosphor and its production method
The invention provides electroluminescent phosphor having superior luminance and a long life. The host material is ZnS.aAO, of which “A” is at least one element selected from among magnesium...
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7112921 |
Light emitting device having selenium-based fluorescent phosphor
Provided herein are novel phosphors useful in the manufacture of white light emitting diodes. The phosphors provided by the invention are described by the formulae:
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7109648 |
Light emitting device having thio-selenide fluorescent phosphor
Provided herein are novel phosphors useful in the manufacture of white light emitting diodes. The phosphors provided by the invention are described by the formulae:
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7101520 |
High luminescence phosphor particles and methods for producing the particles
Methods for producing metal/metalloid oxide particles comprise rare earth metals herein include reacting a reactant stream in a gas flow. The reactant stream includes a rare earth metal precursor...
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7094361 |
Optically transparent nanocomposite materials
Optically transparent composite materials in which solid solution inorganic nanoparticles are dispersed in a host matrix inert thereto, wherein the nanoparticles are doped with one or more active...
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7070756 |
Process for producing zinc sulfide particles
A mixed melt, which contains urea and/or a urea derivative and contains a sulfur source and a zinc source, is prepared. A temperature of the mixed melt is raised, and a precipitate of zinc sulfide...
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7067071 |
Zinc sulfide electroluminophores and method for production thereof
Zinc sulfide electroluminophores are prepared from solutions of zinc salts with hydrogen sulfide. The zinc sulfide compounds are mixed with activator and coactivator compounds to produce...
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7067072 |
Nanophase luminescence particulate material
The present invention relates in general to nanoparticles exhibiting luminescence such as photostimulated luminescence or photoluminescence and optical switching processes based upon such...
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7048872 |
Codoped direct-gap semiconductor scintillators
Fast, bright inorganic scintillators at room temperature are based on radiative electron-hole recombination in direct-gap semiconductors, e.g. CdS and ZnO. The direct-gap semiconductor is codoped...
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7041371 |
Polyethylene glycol-modified semiconductor nanoparticles, method for producing the same, and material for biological diagnosis
This invention provides PEG-modified semiconductor nanoparticles of which fluorescence intensity is effectively inhibited from lowering, which are capable of forming a stable dispersion in water,...
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7022260 |
Fluorescent member, and illumination device and display device including the same
A fluorescent member includes a plurality of particles dispersed in a medium. Each particle includes a core and a coating layer covering the core. The core is formed of a semiconductor which...
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7018564 |
Method for making phosphor ink and system using the same
A method for making phosphor ink is provided which uses ultrasonic vibrations to remove surface defect layers from phosphor particles and to quickly and uniformly disperse the phosphor particles...
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7014793 |
Method of making electroluminescent phosphor using sonochemistry
A method of making zinc sulfide based electroluminescent phosphors is described wherein a first-fired zinc sulfide material having a hexagonal β-ZnS crystal structure is at least partially...
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7011896 |
Phosphor thin film, preparation method, and EL panel
In a phosphor thin film comprising a matrix material and a luminescence center, the matrix material has the compositional formula: M II v A x B y O z S w wherein M II is Zn, Cd or Hg, A is Mg,...
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7008559 |
Manganese doped upconversion luminescence nanoparticles
The present relates in general to upconversion luminescence (“UCL”) materials and methods of making and using same and more particularly, but not meant to be limiting, to Mn 2+ doped...
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7008557 |
Production method of phosphor and phosphor
The present invention relates to a production method of a phosphor comprising the steps of: forming a phosphor precursor in a liquid phase; drying the phosphor precursor; and firing the dried...
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7005086 |
Fluorescent substance, light-emitting diode and method for producing fluorescent substance
A fluorescent substance is obtained by weighing and mixing CaS, Ga 2 S 3 , EuS and Ce 2 S 3 in a mole ratio of (1-x):a:x:y (wherein 0.001≦x≦0.2, 0.0001≦y≦0.02 and 0.5≦a≦5) and by...
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7005084 |
Thermoluminescent detector of LiF containing Mg, Cu, Na and Si as dopants and its preparation
The disclosure concerns a pellet type LiF element for a thermoluminescent dosimetry (TLD) and its preparation. More particularly, the disclosure concerns the pellet type LiF element for a...
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7001537 |
Phosphor and its production process
The present invention is to provide a phosphor of minimum particle size having an excellent crystallinity and a high brightness higher than conventional crude particles, which is usable for a...
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6994802 |
Cathodoluminescent phosphor powders, methods for making phosphor powders and devices incorporating same
Cathodoluminescent phosphor powders and a method for making phosphor powders. The phosphor powders have a small particle size, narrow particle size distribution and are substantially spherical. The...
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6987353 |
Light emitting device having sulfoselenide fluorescent phosphor
Provided herein are novel phosphors useful in the manufacture of white light emitting diodes. The phosphors provided by the invention are described by the formula: described by the formula:
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6942932 |
Phosphor and EL panel
A phosphor comprising a matrix material: Ba 1-x Zn x S wherein 0<x<1 and a luminescence center, typically Mn and/or Eu emits light of a sufficient color purity to eliminate a need for a...
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6939482 |
Phosphor thin film, manufacturing method of the same, and electroluminescent panel
A phosphor thin film includes a matrix material expressed by a composition formula A x B y O w S z , and a substance functioning as a luminescence center in the matrix material. In the composition...
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6924592 |
EL phosphor powder and EL device
Disclosed is EL phosphor powder which contains phosphor particles that comprise zinc sulfide as the matrix thereof and contain an activator and a co-activator, wherein at least 30% of the number of...
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6919683 |
High-brightness phosphor screen and method for manufacturing the same
A high-brightness phosphor screen and a method for forming the same are provided. The high-brightness phosphor screen having a low or middle working voltage, unlike a method of improving...
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6919060 |
Process for producing particles of a metal compound
The object of the present invention is to provide a process for producing particles of a metal compound having a spherical particle shape and an average particle diameter larger than 0.3 μm...
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6899827 |
Inorganic optical taggant and method of making
Sintered, translucent ceramic microbeads, preferably alumina, titania, zirconia, yttria, zirconium phosphate, or yttrium aluminum garnet (YAG) are doped with one or more optically active species....
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