The present invention relates to Mn.sup.4+-activated luminescent materials, to a process for the preparation thereof, and the use thereof as phosphors or conversion phosphors in light sources. The present invention furthermore relates to an emission-converting material comprising the luminescent material according to the invention, and to a light source which comprises the luminescent material according to the invention or the omission-converting material. The present invention furthermore relates to light sources, in particular LEDs, and lighting units which contain a primary light source and the luminescent material according to the invention or the emission-converting material. The Mn.sup.4+-activated luminescent materials according to the invention are suitable, in particular, for the generation of warm-white light in LEDs.

The present invention relates to a method for synthesizing a semiconducting nanosized material.

A light converting nanoparticle represented by Chemical Formula 1,
AX.sub.xChemical Formula 1
wherein, in Chemical Formula 1, A comprises an alkaline metal element, an alkaline-earth metal element, or a combination thereof, X comprises a halogen element, and x is 1 or 2 and is selected such that Chemical Formula 1 is electrically neutral, and a dopant substituted for a portion of A, wherein the dopant comprises Tl.sup.+, In.sup.+, Pb.sup.2+, Bi.sup.3+, Ag.sup.+, Cu.sup.+, Eu.sup.2+, Mn.sup.2+, or a combination thereof, wherein a content of the dopant is less than 15 mole percent, based on a total moles of A, wherein the light converting nanoparticle has a particle diameter of less than or equal to about 100 nanometers, and the light converting nanoparticle has a structure, cubic structure, an orthorhombic structure, a rhombic dodecahedron structure, or a combination thereof.

Provided are nanophosphor-attached inorganic particles that can suppress the degradation of the nanophosphor when sealed in glass, and a wavelength conversion member using the nanophosphor-attached inorganic particles. The nanophosphor-attached inorganic particle 10 include: inorganic particles 1 having an average particle diameter of 1 m or more; and a nanophosphor 2 attached to surfaces of the inorganic particles 1.

Provided are nanophosphor-attached inorganic particles that can suppress the degradation of the nanophosphor when sealed in glass, and a wavelength conversion member using the nanophosphor-attached inorganic particles. The nanophosphor-attached inorganic particle 10 include: inorganic particles 1 having an average particle diameter of 1 m or more; and a nanophosphor 2 attached to surfaces of the inorganic particles 1.

Color-conversion structures for converting input pump light of a color to one or more differing colors. In some embodiments, the color-conversion structure includes a color-conversion (CC) layer having an input-side coating configured to optimize the amount of the pump light reaching the CC layer and to optimize the amount of color-converted light output by the CC layer. In some embodiments, the CC layer has an output-side coating configured to minimize the amount of unconverted pump light output from the CC layer and to maximize the color-converted light output from the CC layer. Various treatment for enhancing the performance of color-converting structures are also disclosed, as are a number of material combinations for quantum-well (QW) based CC layers and alternatives to QW-based CC layers. Also disclosed are light-emitting structures that each include a color-conversion structure made in accordance with the present disclosure, as well as displays composed of such light-emitting structures.

The present disclosure relates to quantum dots with a core of III-V material, a first layer of II-VI material and an external shell of II-VI material to be used, for example, in downconverters. The external shell is preferably made of an alloy of Zn and Cd with Se or S. Introducing a small amount of Cd in the external shell provides excellent absorbance performance in blue, violet and UV wavelengths. The amount of Cd needed for this increase in absorbance can be very low. Further, the emitted light can be nearly monochromatic, which is especially interesting in electronic applications.

The invention relates to an inorganic scintillator material of formula Lu.sub.(2-y)Y.sub.(y-z-x)Ce.sub.xM.sub.zSi.sub.(1-v)M.sub.vO.sub.5, in which: M represents a divalent alkaline earth metal and M represents a trivalent metal, (z+v) being greater than or equal to 0.0001 and less than or equal to 0.2; z being greater than or equal to 0 and less than or equal to 0.2; v being greater than or equal to 0 and less than or equal to 0.2; x being greater than or equal to 0.0001 and less than 0.1; and y ranging from (x+z) to 1. In particular, this material may equip scintillation detectors for applications in industry, for the medical field (scanners) and/or for detection in oil drilling. The presence of Ca in the crystal reduces the afterglow, while stopping power for high-energy radiation remains high.

The invention relates to an inorganic scintillator material of formula Lu.sub.(2y)Y.sub.(yzx)Ce.sub.xM.sub.zSi.sub.(1v)M.sub.vO.sub.5, in which: M represents a divalent alkaline earth metal and M represents a trivalent metal, (z+v) being greater than or equal to 0.0001 and less than or equal to 0.2; z being greater than or equal to 0 and less than or equal to 0.2; v being greater than or equal to 0 and less than or equal to 0.2; x being greater than or equal to 0.0001 and less than 0.1; and y ranging from (x+z) to 1. In particular, this material may equip scintillation detectors for applications in industry, for the medical field (scanners) and/or for detection in oil drilling. The presence of Ca in the crystal reduces the afterglow, while stopping power for high-energy radiation remains high.

A quantum dot film and a preparation method therefor, a photoelectric device, a display apparatus, and a preparation method for a quantum dot light-emitting device. The quantum dot film is formed by quantum dots containing a ligand, and the ligand is a halogen ion. The preparation method for the quantum dot film includes: S100: preparing an initial quantum dot film by using quantum dots containing an oil-soluble ligand; and S200: using a solid-state ligand exchange method to perform ligand exchange on the oil-soluble ligand on the surface of the initial quantum dot film by using an organic salt of a halogen, such that the oil-soluble ligand on the surface of the quantum dot film is exchanged into the halogen ion.