Abstract: A quantum dot including a core and a shell disposed on an outer surface of the core. The core includes a first semiconductor nanocrystal including a Group II-VI compound. The shell includes a second semiconductor nanocrystal. An effective mass of the second semiconductor nanocrystal is about 0.5 times to about 2.0 times an effective mass of the first semiconductor nanocrystal and the quantum dot does not include cadmium, lead, mercury, or a combination thereof.

Abstract: The present invention relates to the field of luminescent crystals (LCs), and more specifically to Quantum Dots (QDs) of formula A1aM2bXc, wherein the substituents are as defined in the specification. The invention provides methods of manufacturing such luminescent crystals, particularly by dispersing suitable starting materials in the presence of a liquid and by the aid of milling balls; to compositions comprising luminescent crystals and to electronic devices, decorative coatings; and to components comprising luminescent crystals.

Abstract: A light emitting material includes: luminescent nanoparticles; and an ionic crystal containing an anionic component represented by formula (1) below. In the formula, R1 and R2 each independently denote a fluorine atom or a fluoroalkyl group, or R1 and R2 each denote a fluoroalkylene group to be connected to each other to form a ring.

Abstract: The dust core comprises a plurality of soft magnetic iron-based particles, a coating layer disposed on each of the surfaces of the soft magnetic iron-based particles, an interstitial layer disposed between the coating layers, and a nanopowder disposed between the soft magnetic iron-based particles. The coating layer is a layer of a compound comprising Fe, Si, O, B and N; and the nanopowder is a powder of a compound comprising O, N and at least one element selected from the group consisting of Fe, Si, Zr, Co, Al, Mg, Mn and Ni.

Abstract: A quantum dot, a production method thereof, and a quantum dot composite and a device including the same are disclosed, wherein the quantum dot includes an alloy semiconductor nanocrystal including indium (In), gallium, zinc (Zn), phosphorus (P), and sulfur (S), and in the quantum dot, a mole ratio of gallium with respect to indium (Ga:In) is greater than or equal to about 0.2:1, a mole ratio of phosphorus with respect to indium (P:In) is greater than or equal to about 0.95:1, the quantum dot does not include cadmium, and in an UV-Vis absorption spectrum of the quantum dot(s), a first absorption peak is present in a range of less than or equal to about 520 nm.

Abstract: A quantum dot composition may include: a first solvent; a second solvent different from the first solvent; first quantum dots including a hole-transporting ligand; and second quantum dots including an electron-transporting ligand, wherein the first solvent and the second solvent are miscible solvents having different boiling points from each other, a degree of dispersion of the first quantum dots is greater in the first solvent than in the second solvent, and a degree of dispersion of the second quantum dots is greater in the second solvent than in the first solvent.

Abstract: A method for synthesising a molecular magnetic material from a paramagnetic reactant including a d-electron metal in a paramagnetic form, a diamagnetic reactant comprising a d-electron metal in a diamagnetic form, and at least one donor of cyanide (CN—) ligands being a separate compound and/or contained in the paramagnetic reactant and/or in the diamagnetic reactant.

Abstract: The present invention relates to a method for producing an InP-based quantum dot precursor from a phosphorus source and an indium source, in which a silylphosphine compound represented by the following Formula (1) with a content of a compound represented by the following Formula (2) of 0.3 mol % or less is used as the phosphorus source. Further, the present invention provides a method for producing an InP-based quantum dot comprising heating an InP quantum dot precursor to a temperature of 200° C. or more and 350° C. or less to obtain an InP quantum dot. (R is as defined in the specification.

Abstract: A quantum dot structure includes a core and an inner shell. The core is a single crystal of a compound M1C1, and has a core surface having a first region and a second region. The first region has a crystal plane that is inactive with oxygen, and the second region has a crystal plane that is easily reactive with oxygen. The inner shell is a single crystal of a compound M2C2, and is formed on the first region of the core surface. A method for making the quantum dot structure is also disclosed.

Abstract: Provided is a core/multishell tetragonal upconversion nanophosphor capable of being excited by near-infrared (NIR) light having wavelengths of 800±20 nm, 980±20 nm, and 1532±20 nm to emit light of blue, green, red, and combinations thereof.

Abstract: A wavelength converter material and a method of A method of preparing a wavelength converter material may include providing an optionally oxide coated phosphor material, mixing the optionally oxide coated phosphor material with an optionally oxide coated paramagnetic nanoparticle, coating the optionally oxide coated phosphor material and the optionally oxide coated paramagnetic nanoparticle with an oxide coating, thereby preparing a coated phosphor-nanoparticle particle, and separating the coated phosphor-nanoparticle particle, thereby preparing a wavelength converter material. The separating of the coated phosphor-nanoparticle particle may be manipulated by applying a magnetic field. Furthermore, a wavelength converter material, as well as a light emitting diode are described herein.

Abstract: A quantum dot having a perovskite crystal structure and including a compound represented by Chemical Formula 1: ABX3+???Chemical Formula 1 wherein, A is a Group IA metal selected from Rb, Cs, Fr, and a combination thereof, B is a Group IVA metal selected from Si, Ge, Sn, Pb, and a combination thereof, X is a halogen selected from F, Cl, Br, and I, BF4, or a combination thereof, and ? is greater than 0 and less than or equal to about 3; and wherein the quantum dot has a size of about 1 nanometer to about 50 nanometers.

Abstract: Mineral wool insulation products are provided. The mineral wool insulation includes a plurality of mineral wool fibers and a wax emulsion applied to the mineral wool fibers. The wax emulsion imparts excellent water resistance and thermal performance properties to the mineral wool insulation.

Abstract: A quantum dot including a core including a quaternary alloy semiconductor nanocrystal and not including cadmium, a composition and a quantum dot polymer composite including the same, and an electronic device including the same. The quaternary alloy semiconductor nanocrystal comprises indium (In), phosphorous (P), zinc (Zn), and selenium (Se), and in the core, a ratio of the zinc with respect to the indium is less than or equal to about 0.5:1 and in the core, a ratio of selenium with respect to zinc is less than or equal to about 0.6:1.

Abstract: Solution for use in filling micrometer-size cavities (10), the solution comprising a first solvent, a first polymer (102) having a first molecular weight, a second polymer (103) having a second molecular weight, luminophores (101) and a surfactant, the second molecular weight being 10 to 50 times greater than the first molecular weight.

Abstract: A phosphor may have the general formula EA2A4D3OxN8-x:RE. EA may be selected from the group of divalent elements. A may be selected from the group of monovalent, divalent or trivalent elements. D may be selected from the group of trivalent or tetravalent elements. RE may be an activator element. 0?x?8, and ?(4+4y+3z)=3(8?x)+2x with the charge number y of element A, the charge number z of element D, and ?=0.9-1.1.

Abstract: Provided are a near-infrared II polymer fluorescent sub-microsphere and a method for preparing the same. The method includes steps of 1) dissolving fluorochrome in a water-immiscible organic solvent, thus obtaining a fluorochrome solution; 2) distributing a polymer sub-microsphere into a sodium dodecyl sulfonate solution, thus obtaining a sub-microsphere solution with the polymer sub-microsphere as a carrier for the fluorochrome; 3) subjecting a first mixture of the fluorochrome solution and the sub-microsphere solution to ultrasonic treatment, thus obtaining an emulsion; 4) swelling the emulsion such that the fluorochrome solution enters nanopores formed during swelling of the polymer sub-microsphere, thus obtaining a second mixture; and 5) heating the second mixture to volatilize the organic solvent, such that the fluorochrome is crystallized out and encapsulated in the nanopores, thus obtaining the near-infrared II polymer fluorescent sub-microsphere.

Abstract: The present invention relates to a semiconducting nanoparticle.

Abstract: A method for obtaining at least one particle, including: (a) preparing solution A including at least one precursor of at least one of Si, B, P, Ge, As, Al, Fe, Ti, Zr, Ni, Zn, Ca, Na, Ba, K, Mg, Pb, Ag, V, Te, Mn, Ir, Sc, Nb, Sn, Ce, Be, Ta, S, Se, N, F, and Cl; (b) preparing aqueous solution B; (c) forming droplets of solution A; (d) forming droplets of solution B; (e) mixing droplets; (f) dispersing mixed droplets in a gas flow; (g) heating dispersed droplets to obtain the at least one particle; (h) cooling the at least one particle; and (i) separating and collecting the at least one particle. The aqueous solution is acidic, neutral, or basic. In step (a) and/or step (b) at least one colloidal suspension of a plurality of nanoparticles is mixed with the solution. Also, a device for implementing the method.

Abstract: To provide a ferrite sintered magnet having a high residual magnetic flux density (Br), a high coercive force (HcJ), a good production stability, and also able to produce at a low cost. The ferrite sintered magnet includes a hexagonal M-type ferrite including A, R, Fe, and Co in an atomic ratio of A1-xRx(Fe12-yCoy)zO19. A is at least one selected from Sr, Ba, and Pb. R is La only or La and at least one selected from rare earth elements. 0.14?x?0.22, 11.60?(12-y)z?11.99, and 0.13?yz?0.17 are satisfied. 0.30?Mc?0.63 is satisfied in which Mc is CaO content (mass %) converted from a content of Ca included in the ferrite sintered magnet.