A device including an LED light source optically coupled to a green-emitting U.sup.6+-doped phosphor having a composition selected from the group consisting of U.sup.6+-doped phosphate-vanadate phosphors, U.sup.6+-doped halide phosphors, U.sup.6+-doped oxyhalide phosphors, U.sup.6+-doped silicate-germanate phosphors, U.sup.6+-doped alkali earth oxide phosphors, and combinations thereof, is presented. The U.sup.6+-doped phosphate-vanadate phosphors are selected from the group consisting of compositions of formulas (A1)-(A12). The U.sup.6+-doped halide phosphors are selected from the group consisting of compositions for formulas (B1)-(B3). The U.sup.6+-doped oxyhalide phosphors are selected from the group consisting of compositions of formulas (C1)-(C5). The U.sup.6+-doped silicate-germanate phosphors are selected from the group consisting of compositions of formulas (D1)-(D11). The U.sup.6+-doped alkali earth oxide phosphors are selected from the group consisting of formulas (E1)-(E11).

A nitride phosphor, and a light emitting device and a backlight module employing the nitride phosphor. The nitride phosphor has the formula (Sr.sub.1-x, Ba.sub.x)LiAl.sub.3N.sub.4-nO.sub.n:Eu.sup.3+.sub.y, Eu.sup.2+.sub.z with 0<x<1 and y/z>0.1. The light emitting device includes a light emitting diode configured to emit a first light and the nitride phosphor configured to convert a portion of the first light to a second light. A backlight module includes a printed circuit board and a plurality of the light emitting devices.

The invention provides a lighting unit (100) comprising a light source (10), configured to generate light source light (11) and a luminescent material (20), configured to convert at least part of the light source light (11) into luminescent material light (51), wherein the luminescent material (20) comprises a phosphor (40), wherein this phosphor comprises an alkaline earth aluminum nitride based material having a cubic crystal structure with T5 supertetrahedra, wherein the T5 supertetrahedra comprise at least Al and N, and wherein the alkaline earth aluminum nitride based material further comprises a luminescent lanthanide incorporated therein.

A method for manufacturing a nitride phosphor is provided. The method comprises providing a nitride phosphor formulation and subjecting the nitride phosphor formulation to a hot isostatic pressing step. The nitride phosphor formulation comprises a flux and a phosphor precursor, wherein the flux is a barium-containing nitride. The phosphor precursor comprises two or more metal nitrides, and wherein a plurality of metal elements are present in the nitride phosphor and the two or more metal nitrides contain the plurality of metal elements.

Disclosed are a production method for a nitride fluorescent material, a nitride fluorescent material and a light emitting device. The production method is for producing a nitride fluorescent material that has, as a fluorescent material core, a calcined body having a composition containing at least one element M.sup.a selected from the group consisting of Sr, Ca, Ba and Mg, at least one element M.sup.b selected from the group consisting of Li, Na and K, at least one element M.sup.c selected from the group consisting of Eu, Ce, Tb and Mn, and Al, and optionally Si, and N, and the method includes preparing a calcined body having the above-mentioned composition, bringing the calcined body into contact with a fluorine-containing substance, and subjecting it to a first heat treatment at a temperature of 100 C. or higher and 500 C. or lower to form a fluoride-containing first film on the calcined body, and forming on the calcined body, a second film that contains a metal oxide containing at least one metal element M2 selected from the group consisting of Si, Al, Ti, Zr, Sn and Zn and subjecting it to a second heat treatment at a temperature in a range of higher than 250 C. and 500 C. or lower.

A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2=38-39 is designated as Ix and the intensity of a peak that appears in a region where 2=37-38 is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.

A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2=38-39 is designated as Ix and the intensity of a peak that appears in a region where 2=37-38 is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.

A phosphor having a favorable emission peak wavelength, narrow full width at half maximum, and/or high emission intensity is provided. Additionally, a light-emitting device, an illumination device, an image display device, and/or an indicator lamp for a vehicle having favorable color rendering, color reproducibility and/or favorable conversion efficiency are provided. The present invention relates to a phosphor including a crystal phase having a composition represented by a specific formula, and when, in a powder X-ray diffraction spectrum of the phosphor, the intensity of a peak that appears in a region where 2?=38-39? is designated as Ix and the intensity of a peak that appears in a region where 2?=37-38? is designated as Iy, the relative intensity Ix/Iy of Ix to Iy is 0.140 or less, and a light-emitting device comprising the phosphor.

The vehicle light-emitting device includes a light-emitting element having a peak emission wavelength of 400 nm or greater and 510 nm or less, and a fluorescent member including a first phosphor excited by light emitted by the light-emitting element and emitting light having a peak emission wavelength of 480 nm or greater and 530 nm or less a second phosphor excited by the light emitted by the light-emitting element and emitting light having a peak emission wavelength of 540 nm or greater and 600 nm or less. The vehicle light-emitting device emits light in a region AL in a CIE1931 chromaticity diagram as defined in the present disclosure.

The invention relates to a phosphor with garnet structure and a light-emitting device comprising the phosphor, wherein the phosphor includes the following components in percentage by weight: 38.47-45.19% of Y element, 9.49-22.09% of Al element, 2.06-24.31% of Ga element, 27.3-32.04% of O element, 0.43-1.46% of Ce element. In the phosphor particles, the shortest distance from the surface of one side of the particle to the surface of the opposite side through the centroid of the particle is defined as R, the longest distance is R1, and 5 ?m?R?40 ?m; any distance from the particle surface to the centroid is r, and 0<r<?R; and the space with the distance from the particle surface to the centroid direction being less than or equal to r is defined as r.sub.inner.