Abstract: Core-shell nanoparticles comprises a phosphorescent core and metal shell comprising at least two metals The phosphorescent core may comprise an up converting phosphor. The phosphorescent core may comprise a trivalent rare earth cation. The phosphorescent core further may comprise a monovalent alkali metal. The phosphorescent core may optionally comprises a second and also optionally a third trivalent rare earth cation.

Abstract: Disclosed is a manufacturing method for a light emitting device Including a light emitting element and a wavelength converting part which converts light emitted from the light emitting element into light of another wavelength. The manufacturing method includes a first step and a second step. The first step is a step of applying onto the light emitting element and drying a first liquid mixture in which phosphor and plate-like particles are dispersed in polyhydric alcohol having a valence of two or more to form a phosphor layer. The second step is a step of applying onto the phosphor layer and firing a second liquid mixture in which a translucent ceramic precursor is dispersed in a solvent to form the wavelength converting part.

Abstract: This invention proposes a photo-luminescence coating and its applications. The photo-luminescence coating is a mixture of photo-luminescence phosphors, glass powder, macromolecule compounds and solvent. The photo-luminescence coating is coated on a substrate and, after a drying, de-binding and sintering process, a photo-luminescence glass layer is formed, and especially the pattern can be designed. The photo-luminescence glass is made from a solidifying procedure of a melt glass mixed with photo-luminescence phosphors, and especially can be made to have a specialized shape.

Abstract: 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.

Abstract: Disclosed are luminescent compositions having luminescent particles coated by a surface capping agent. Luminescent particles include rare earth doped phosphors, semiconductor quantum dots, and organic phosphors. Surfactants include macromolecules, polypeptides, polysaccharides, and polymers. Rare earth doped phosphors have host compositions and rare earth dopants, wherein the host compositions include NaYF4, LaF3, YF3, CeF3, CaF2, CsCdBr3, and Y2O3, and wherein the rare earth dopants include Cs, Pr, Nd, Sm, Er, Gs, Tb, Dy, Ho, Er, Tim, Yb, and combinations of two or more of these. The refractive index mismatch of the luminescent compositions and surrounding medium is less than about 0.1. Also disclosed are methods of making the luminescent compositions, luminescent devices and displays containing the luminescent compositions, uses of the luminescent compositions in particle imaging velocimetry, and uses of the luminescent compositions as contrast agents for disease monitoring.

Abstract: The invention provides a resin composition having an excellent dispersibility of a phosphor, and when the resin composition is processed and used as a color conversion material, to give a hardened material having a high heat resistance, resistance to thermal yellowing, light resistance, transparency and refractive index, and an excellent adhesion to allow color conversion of light emitted from an optical semiconductor stably and without a flare spot over a long period of time. The invention also relates to a hardening resin composition having at least one of epoxy and oxetanyl.

Abstract: The present invention relates to new types of material mixtures composed of at least two substances, one serving as a matrix material and the other being an emission material capable of emission and containing at least one element of atomic number greater than 20, and for their use in organic electronic components such as electroluminescent elements and displays.

Abstract: Carbon nanotube compositions suitable for printing, methods of making carbon nanotube compositions, and substrates having a print thereon containing carbon nanotube compositions, and uses thereof. The carbon nanotubes of the compositions are individualized. The carbon nanotube compositions can be used in applications, such as document security.

Abstract: A method for the photo-mediated phase transfer of inorganic nanocrystals, such as luminescent quantum dots, QDs, is provided. Irradiation, specifically UV excitation (?ex<400 nm), promotes the in-situ ligand exchange of hydrophobic quantum dots with hydrophilic ligands and their facile transfer to polar solvents and buffer media. The technique enables transfer of quantum dots and other nanocrystal materials from hydrophobic to polar and hydrophilic solutions.

Abstract: A process for producing a coated phosphor, namely a phosphor coated with a coating material, which includes a mixing step of mixing a phosphor with a coating material in a solvent to form a mixed fluid and a separation step of separating the mixed fluid into a solid phase and a liquid phase, wherein the phosphor comprises barium (Ba), strontium (Sr), europium (Eu), silicon (Si) and oxygen (O) at an atomic ratio represented by compositional formula (1), and the mass ratio of the phosphor to the coating material is 40:260 to 200:260, [(Ba1-ySry)1-xEux]aSibOc (1) [wherein a, b, c, x and y satisfy the relationships: 2.7<a<3.3, 0.9<b<1.1, 4.5<c<5.5, 0<x<0.09 and 0.25<y<0.75].

Abstract: The invention relates to a method for the synthesis of glutathione-capped cadmium-telluride (GSH-CdTe) quantum dots in an aqueous medium, including the steps of: a) preparing a precursor solution of cadmium in a citrate buffer; b) adding glutathione (GSH) to the preceding mixture via strong agitation; c) adding a telluride (potassium or sodium telluride) oxyanion as a telluride donor to the preceding mixture; d) allowing the preceding mixture to react; and e) stopping the reaction by incubation at low temperature.

Abstract: A chromic luminescent object comprising one or more chromic luminescent compositions incorporated into or onto one or more portions of the object, in which the one or more chromic luminescent compositions are selected such that, when subsequently exposed to incident electromagnetic radiation, at least brightness of the one or more portions of the object is substantially modulated through absorption and emission as a function of incident electromagnetic radiation is disclosed. Also disclosed are methods for fabricating the chromic luminescent object.

Abstract: According to an embodiment, a wavelength converter includes a resin allowing light emitted from a light source to pass through, a plurality of particle-shaped fluorescent substances dispersed in the resin, and fillers dispersed in the resin with a particle diameter smaller than the fluorescent substance. The fluorescent substances absorb the light emitted from the light source and emits fluorescence having a wavelength different from a wavelength of the light emitted from the light source; and a distribution of the fillers has higher density near the fluorescent substance than a density at a middle position between the fluorescent substances adjacent to each other.

Abstract: An economic, direct synthetic method for producing water soluble ZnS QDs that are ready for bioconjugation is provided. The method can produce aqueous ZnS QDs with emission wavelengths varying from 400 nm to 700 nm. Highly luminescent metal sulfide (MS) QDs are produced via an aqueous synthesis route. MS QDs are capped with thiol-containing charged molecules in a single step. The resultant MS QDs exhibit the distinctive excitonic photoluminescence desired of QDs and can be fabricated to avoid undesirable broadband emissions at higher wavelengths. The aqueous ZnS QDs are stable in biological fluids over a long period of time. In addition, non-toxic ZnS QDs have been produced with good photoluminescence properties.

Abstract: In one aspect, the present invention provides a method of forming a film of nanocomposites of carbon nanotubes (CNTs) and platinum (Pt) nanoparticles. In one embodiment, the method includes the steps of (a) providing a first solution that contains a plurality of CNTs, (b) providing a second solution that contains a plurality of Pt nanoparticles, (c) combining the first solution and the second solution to form a third solution, and (d) filtering the third solution through a nanoporous membrane using vacuum filtration to obtain a film of nanocomposites of CNTs and Pt nanoparticles.

Abstract: A phosphorescent asphalt mixture comprising a binder, aggregate and a phosphorescent compound is disclosed. The phosphorescent compound has formula MAl2O4, wherein M is chosen from Sr, Ba and Ca, and wherein the phosphorescent compound has been doped with at least one rare earth element.

Abstract: Polymer composite neutron detector materials are described. The composite materials include an aromatic polymer matrix, such as an aromatic polyester. Distributed within the polymer matrix are neutron capture agents, such as 6LiF nanoparticles, and organic or inorganic luminescent fluors. The composite materials can be formed into stretched or unstretched thin films, fibers or fiber mats.

Abstract: One embodiment of the invention describes a method for producing a luminescence conversion substance layer on a substrate with a semiconductor element that emits a primary radiation during operation. A composition includes a luminescence conversion substance, a matrix material and a solvent. The composition is applied to a substrate. At least part of the solvent is removed, with the result that the luminescence conversion substance layer is formed on the substrate.

Abstract: The present invention provides a phosphor sheet in which the optical properties thereof are not impaired and which exhibits excellent film thickness uniformity even when comprising large-sized phosphor particles in high concentration. In one embodiment, the invention provides a phosphor sheet in which the content of phosphor is 53 weight % or more of the total sheet, and in another embodiment, a phosphor sheet includes at least a silicone resin, a phosphor and silicone fine particles.

Abstract: A UV coating composition for LED color conversion including: 25 wt % to 97 wt % of a UV curable resin; and 3 wt % to 75 wt % of a phosphor. The composition enables emission of white light using only a white LED lens or a light guide plate without affecting a blue, violet or UV LED, thereby eliminating a need for a white LED. Further, users of a LED including the composition can perform direct and easy adjustment of the intensity of white light to obtain a desired intensity by replacing a conventional LED lens. The LED lens provides soft and comfortable lighting which effectively reduces glare caused by high brightness white LED lighting. Moreover, the composition slows deterioration of a lighting device and makes possible a light guide plate having a simple and thin structure.

Abstract: An ink composition comprising a microparticulate fluorescent material which can emit a high brightness fluorescent light by ultraviolet ray and has a predetermined nanosize is provided. The ink composition comprises a microparticulate fluorescent material represented by the formula YVO4:A, wherein A is a rare earth metal other than yttrium, which can emit a fluorescent light by the excitation with ultraviolet ray. The fluorescent material has an average primary particle size of 30 to 400 nm and has not been calcined. The fluorescent material is prepared by, for example, mixing Composition (I) containing a yttrium compound, a compound of rare earth metal other than yttrium and a complex forming compound in water with Composition (II) containing a vanadium compound in water and then reacting them.

Abstract: This disclosure relates to compositions of nanoparticles and methods of their use related thereto such as for solar-to-fuel conversion. In general, the compositions include specific nanostructures that act as photosensitizers can help provide near quantum yield for light driven redox mediator reduction and hydrogen generation. In the presence of a catalyst and redox mediator, compositions described herein can efficiently convert sunlight to hydrogen, providing a versatile approach to solar-to-fuel conversion.

Abstract: Preparation of semiconductor nanocrystals and their dispersions in solvents and other media is described. The nanocrystals described herein have small (1-10 nm) particle size with minimal aggregation and can be synthesized with high yield. The capping agents on the as-synthesized nanocrystals as well as nanocrystals which have undergone cap exchange reactions result in the formation of stable suspensions in polar and nonpolar solvents which may then result in the formation of high quality nanocomposite films.

Abstract: In one embodiment, a process for producing a bisphenol A product comprises: reacting phenol with acetone in the presence of a sulfur containing promoter to obtain a reaction mixture comprising bisphenol A, phenol, and the promoter; after reacting the phenol with the acetone, cooling to form a crystal stream comprising crystals of bisphenol A and phenol; separating the crystals from the crystal steam; melting the crystals to form a molten stream of bisphenol A, phenol, and sulfur; contacting the molten stream with a base to reduce a sulfur concentration in the molten stream and form a reduced sulfur stream; and removing phenol from the reduced sulfur stream to form a bisphenol A product.

Abstract: The invention relates to a method for the preparation of nanoparticles in ionic liquids. Specifically, the invention relates to a simple, quick and effective method for the preparation of dispersions of nanoparticles (nanofluids) in an ionic liquid.

Abstract: A wavelength conversion element includes a substrate, and a fluorescent material layer disposed on the substrate. The volume concentration of the fluorescent material in the fluorescent material layer is equal to or higher than 15 vol %.

Abstract: To enhance luminance and color rendering of a light emitting device comprising phosphors as wavelength converting material and at least one semiconductor light emitting device that emits visible light, as said phosphors, are used phosphors which are one or more kinds of phosphors selected from a group consisting of oxides, oxynitrides and nitrides, and are a mixture consisting of two or more kinds of phosphors whose luminous efficiency is 35% or higher when excited by the visible light from said semiconductor light emitting device at room temperature. In addition, said mixture contains a first phosphor, and a second phosphor that is different from said first phosphor and capable of absorbing emitted light from said first phosphor, and said first phosphor is contained 85 weight % or more of said mixture of phosphors.

Abstract: A neutron scintillator composite (NSC) is made of a neutron scintillator and a binder. The neutron scintillator of the composite has the formula LiyMgBry|2, where y=2, 4 or 6 and may further comprise cerium as a scintillation activator. The binder of the composite has an index of refraction substantially identical to that of the neutron scintillator. The neutron scintillator and binder are mixed into a solid or semi-solid neutron scintillator composite having sufficient flowability for molding into a shaped article, such as a neutron sensing element of a radiation detector. The neutron scintillator composite collects and channels photons through the material itself and into a photosensing element optically coupled to the composite. Because the indices of refraction for both the neutron scintillator and the binder are substantially identical, scattering at the scintillator-binder interface(s) is minimized, thereby producing transmission efficiencies that approach single crystals.

Abstract: The invention relates to a method for identifying an object, wherein said object has a security element, which contains one or more inorganic luminescent pigments, wherein the method comprises the steps of producing an emission spectrum of the luminescent pigment and comparing the obtained emission spectrum with the spectrum specified for the security element. The invention further relates to a security element, by means of which it is possible to determine the authenticity of a product in a simple manner.

Abstract: Compositions, methods, and systems for improving ways by which light can be created are provided. In one exemplary embodiment, a composition can be formed by mixing a particular amount of a carrier and a particular amount of one or more phosphors. The carrier can be selected from a group including plastic materials, glass materials, and ceramic materials. The resulting mixture can be formed into pellets or kernels for use with a LED die. The pellets or kernels can be used in place of powders or other coatings typically used with LED packages. Methods for manufacturing the pellets or kernels, and for creating light by using the pellets or kernels, are also provided.

Abstract: Compositions, devices, and methods for optimizing photosynthetically active radiation by utilizing a composition comprising a quantum confinement material having an emission spectra of between 300 nm and 545 nm, and a quantum confinement material having an emission spectra of between 545 nm and 750 nm where the composition may be embedded in and/or coated on one or more transparent surfaces.

Abstract: Disclosed are bulk, crosslinked nanocomposite networks that do not require a host polymer in the matrix. Bulk nanocomposites can be formed via derivatization of nanoparticles with functional ligands that directly or indirectly crosslink with one another or with nanostructures of the network to form a highly crosslinked network. Disclosed bulk nanocomposites can contain nanoscale materials at extremely high loading levels. Nanostructures incorporated in the networks can include optically active materials such as inorganic nanostructures doped with optically active rare earth ions.

Abstract: There is disclosed a silicone resin composition includes (A-1) a ladder structure-containing polyorganosiloxane having a ladder structure and having two or more alkenyl groups in one molecule, (B-1) a ladder structure-containing hydrogen polyorganosiloxane having a ladder structure and having hydrogen atoms that are bonded to two or more silicon atoms in one molecule, and/or (B-2) a hydrogen polyorganosiloxane having two or more hydrogen atoms that are bonded to silicon atoms in one molecule. As a result, there is provided the silicone resin composition as a light-emitting device protective material having a high transparency, heat resistance, light resistance and gas barrier.

Abstract: A light emitting body has a base material containing a graphene structure and a covering material for covering a surface of the base material. The graphene structure preferably includes a sheet portion made of a monolayer or multilayer graphene nanosheet and having, at an edge portion thereof, an armchair edge-face portion; and a terminal six-membered ring bound to the armchair edge-face portion while sharing only one side therewith. Further, the graphene structure preferably includes a nitrogen-containing functional group bound to any one or more carbon atoms selected from (a) carbon atoms constituting the terminal six-membered ring but not bound to the armchair edge-face portion, and (b) carbon atoms constituting the sheet portion (including carbon atom on the side shared with the terminal six-membered ring).

Abstract: The present invention relates to phosphorescent organic electroluminescent devices which contain as a matrix material of emitting layer, metal complexes of the formula (I)

Abstract: An artificial marble includes unsaturated polyester resin (A), compound including silica (B), and luminescent pigment (C). An artificial marble according to a second embodiment includes about 70 to about 95% by weight of a non-luminescent base material (I) comprising unsaturated polyester resin (A), compound including silica (B), and organic/inorganic pigment (C) and about 5 to about 30% by weight of a luminescent amorphous pattern part (II) comprising unsaturated polyester resin (A), compound including silica (B), and luminescent pigment (D). An artificial marble according to a third embodiment includes unsaturated polyester resin (A), compound including silica (B), and amorphous luminescent chip (C).

Abstract: The present invention provides transparent chips with natural metal-like texture by coating silica-containing transparent chips with colored material, such as a metal powder, in a transparent resin as a base resin. The present invention also provides artificial stone with natural metal-like texture and patterns by mixing the colored material coated transparent chips and inorganic filler with a matrix resin. The artificial stone of the present invention can be prepared by mixing about 4 to about 24 parts by weight of inorganic filler and about 0.1 to about 5.0 parts by weight of the colored material coated transparent chips, per about 1 part by weight of the matrix resin. The colored material coated transparent chips can have a specific gravity of about 2.0 to about 2.65, while the matrix resin can have a specific gravity of about 2.2 to about 2.

Abstract: There is provided infrared shielding nanoparticles having excellent water-resistant property and excellent infrared shielding property, which is the infrared shielding nanoparticles of composite tungsten oxide expressed by a general formula WyOz and/or a general formula MxWyOz, with an average primary particle size of the nanoparticle being 1 nm or more and 800 nm or less, and a surface of the nanoparticle being coated with tetrafunctional silane compound or its hydrolysis product and/or an organic metal compound.

Abstract: A physiologically compatible impression material comprises 0.005 wt % to 4.99 wt %, preferably 0.01 wt % to 1.0 wt %, and particularly preferably 0.025 wt % to 0.25 wt % of at least one luminescent material.

Abstract: Embodiments include luminescent materials and associated production methods. The material includes a crystal borate having a first substitutable element and a second substitutable element, one or more rare earth ions substituted for the first substitutable element, and chromium substituted for the second substitutable element. The one or more rare earth ions are selected from a group consisting of neodymium and ytterbium. The material also may include a medium within which particles of the borate are incorporated. The medium, with the luminescent material particles, may form a security feature of an article. Embodiments of methods for identifying whether such a luminescent material is incorporated with an article include exposing a portion of the article to excitation in a chromium absorption band, and determining whether a detected emission produced by the article as a result of the excitation indicates an ytterbium emission after termination of the exposing step.

Abstract: It is an object of the present invention to provide a binder resin composition usable for an inorganic fine particle-dispersed paste composition which is excellent in thixotropy and storage stability, has scarcely changeable screen printability with the lapse of time, and can be fired at a low temperature, and to provide the inorganic fine particle-dispersed paste composition. The present invention is directed to a binder resin composition, which contains a binder comprising a (meth)acrylic resin, an organic compound having 3 or more hydroxyl groups, and an organic solvent, the content of the organic compound having 3 or more hydroxyl groups being 0.1 to 15 parts by weight to 100 parts by weight of the (meth)acrylic resin.

Abstract: The present invention aims to provide a surface-treated phosphor having high dispersibility and capable of significantly enhancing moisture resistance without deteriorating the fluorescence properties, and a method for producing the surface-treated phosphor. The surface-treated phosphor includes: a phosphor body; and a surface treatment layer containing at least one specific element selected from elements of the third to sixth groups of the periodic table, and fluorine, the phosphor body having the surface treatment layer on the surface thereof, wherein, when a cross section of the surface treatment layer is subjected to a thickness-wise elemental distribution analysis by a combination of an electron microscopic analysis and an energy-dispersive X-ray element analysis, a peak indicating the maximum content of the specific element appears nearer to the surface than a peak indicating the maximum fluorine content.

Abstract: A stress-sensing material containing a matrix material and a photo-luminescent particle is disclosed, together with adhesives and coatings containing the stress-sensing material. Also disclosed are methods for preparing the stress-sensing material and measuring the stress on an article using the stress-sensing material.

Abstract: In an embodiment, an X-ray detector has a transmissive fluorescence generating portion, and a reflective fluorescence generating portion. The transmissive and reflective fluorescence generating portions have at least one of an intensifying screen having a phosphor layer that contains praseodymium-activated gadolinium oxysulfide phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 60% by volume or more, and an intensifying screen having a phosphor layer that contains europium-activated barium fluorochloride phosphor particles in which a ratio of particles having a particle diameter falling in ±30% of a center particle diameter is 45% by volume or more and their filling rate is 45% by volume or more.

Abstract: Solutions to improve the properties of the phosphors and electroluminescent devices are described, using phosphors in combination with zeolites for converting UV or Blue radiation into visible radiation.

Abstract: Methods for pre-treating packaging materials of particular composition for use in conjunction with a scintillation crystal are disclosed. The packaging materials may comprise a reflecting material, an elastomer, a reflecting fluorocarbon polymer, a polymer or elastomer loaded with a reflecting inorganic powder (including a reflecting inorganic powder comprising a high reflectance material selected from the group comprising Al2O3, TiO2, BN, MgO, BaSO4 and mixtures thereof), or a highly reflective metal foil selected from the group comprising Ag and Al that is chemically compatible with the scintillator crystal. The scintillator crystal may comprise a crystal selected from the group comprising NaI(Tl), LaBr3:Ce, La—Cl3:Ce, La-halides, and La-mixed halides.

Abstract: The invention relates to adhesive masses containing at least one electroluminescent additive, single and double-sided adhesive strips which are provided with adhesive masses of said type, and to the use of said adhesive masses for sticking together electronic components.

Abstract: The present invention relates to a solid printing ink composition, comprising at least one organic compound with a melting point of at least 40° C. and a molecular weight of less than 1000 g/mol, wherein the organic compound is selected from an ester, an ether or an amide, a resin, and a dye and/or a pigment.

Abstract: An epoxy glow coat and a method preparing an epoxy glow coat are disclosed. The epoxy glow coat comprises a mixture obtained by mixing predefined proportions of a clear epoxy and glow powder. The method comprises the steps of: mixing a predefined proportion of a clear epoxy and glow powder to obtain a viscous mixture; applying the viscous mixture on to a desired area; and curing the mixture.

Abstract: A material composition with specific segment wavelength matching refractive index includes (a) resin or a composite thereof to serve as a bonding agent and (b) a medium material of metal oxides or complex metal oxides of specific particle size to serve as an additive for specific segment wavelength matching refractive index. The composition is formed by combining the bonding agent and additive. The composition material uses the wavelength of light emitting from a light-emitting diode (LED) die or excited from a fluorescent agent as the range of a segment to add nanometer particles of D=?/4n optic thickness as basis for formation of an effective medium layer and thus providing a matching refractive index for wavelength of the specific segment bandwidth. Corresponding to different refractive indexes nx of LED die materials, proper amounts of nanometer particles are selectively added to have the refractive index match the LED die.