摘要:
According to one embodiment, the luminescent material shows a luminescence peak in a wavelength range of 570 to 670 nm when excited with light having an emission peak in a wavelength range of 250 to 520 nm. The luminescent material includes a host material having a crystal structure substantially same as the crystal structure of Sr2Si7Al3ON13. The host material is activated by Eu, and includes Sr and Ca to satisfy a relationship of 0.008≦MCa/(MSr+MCa)≦0.114, where MCa is a number of moles of Ca and MSr is a number of moles of Sr.
摘要翻译:根据一个实施方案,发光材料在具有在250至520nm的波长范围内的发光峰的光激发时,显示在570至670nm的波长范围内的发光峰。 发光材料包括具有与Sr 2 Si 7 Al 3 ON 13的晶体结构基本相同的晶体结构的主体材料。 主体材料由Eu活化,包括Sr和Ca,以满足关系:0.008@MCa/(MSr + MCa)@ 0.114,其中MCa是Ca的摩尔数,MSr是Sr的摩尔数。
摘要:
According to one embodiment, the luminescent material shows a luminescence peak in a wavelength range of 570 to 670 nm when excited with light having an emission peak in a wavelength range of 250 to 520 nm. The luminescent material includes a host material having a crystal structure substantially same as the crystal structure of Sr2Si7Al3ON13. The host material is activated by Eu, and includes Sr and Ca to satisfy a relationship of 0.008≦MCa/(MSr+MCa)≦0.114, where MCa is a number of moles of Ca and MSr is a number of moles of Sr.
摘要翻译:根据一个实施方案,发光材料在具有在250至520nm的波长范围内的发光峰的光激发时,显示在570至670nm的波长范围内的发光峰。 发光材料包括具有与Sr 2 Si 7 Al 3 ON 13的晶体结构基本相同的晶体结构的主体材料。 主体材料由Eu活化,包括Sr和Ca,以满足0.008&nlE的关系; MCa /(MSr + MCa)≦̸ 0.114,其中MCa是Ca的摩尔数,MSr是Sr的摩尔数 。
摘要:
A light emitting device according to embodiments has: a substrate; first light emitting units arranged along a first straight line on the substrate; second light emitting units arranged along a second straight line on the substrate, the second straight line being parallel to the first straight line, the second light emitting units having an emission color different from the first light emitting units; and third light emitting units arranged along a third straight line on the substrate, the third straight line being parallel to the first and second straight lines, the third light emitting units having an emission color different from the first and second light emitting units, wherein a distance between light emitting units of a same emission color is longer than a minimum distance between light emitting units of different emission colors.
摘要:
According to one embodiment, the luminescent material emits light having an luminescence peak within a wavelength range of 550 to 590 nm when excited with light having an emission peak in a wavelength range of 250 to 520 nm. The luminescent material has a composition represented by the following formula 1. (Sr1-xEux)aSibAlOcNd formula 1 wherein x, a, b, c and d satisfy following condition: 0
摘要:
A white light emitting device of an embodiment includes: a light emitting element having a peak wavelength in a wavelength range from 430 to 470 nm both inclusive, a first fluorescent material formed over the light emitting element, and emitting light having a first peak wavelength of 530 to 580 nm both inclusive and having a first half width, and a second fluorescent material formed over the light emitting element, and emitting light having a second peak wavelength that is longer than the first peak wavelength and ranges from 570 to 620 nm both inclusive, and having a second half width that is 100 nm or less and is equal to or narrower than the first half width.
摘要:
A white light emitting device according to an embodiment includes: a light emitting element having a peak wavelength in a wavelength range of 430 nm or more and 470 nm or less; a first fluorescent material emits light with a first peak wavelength of 525 nm or more and 560 nm or less; a second fluorescent material emits light with a second peak wavelength longer than the first peak wavelength; and a third fluorescent material emits light with a third peak wavelength of 620 nm or more and 750 nm or less, which is longer than the second peak wavelength. The first fluorescent material and the second fluorescent material has a composition of MSiαOβNγ, and when the first peak wavelength is denoted by λ1 (nm), whereas the second peak wavelength is denoted by λ2 (nm), 1100≦λ1+λ2 and λ2−λ1≦60 are satisfied.
摘要:
A semiconductor light-emitting device includes a semiconductor light-emitting element emitting light in a region ranging from ultraviolet to visible, and a visible-light luminescent element absorbing light emitted from the semiconductor light-emitting element and outputting visible light. The visible-light luminescent element includes a substrate, a light-reflecting layer formed on the substrate and containing light scattering particles, and a luminescent layer containing phosphor particles. The luminescent layer absorbs light emitted from the semiconductor light-emitting element and output visible light. The luminescent layer further absorbs light that is emitted from the semiconductor light-emitting element, arrives at and is reflected from the light scattering particles, and output the visible light.
摘要:
A semiconductor light-emitting device includes a semiconductor light-emitting element emitting light in a region ranging from ultraviolet to visible, and a visible-light luminescent element absorbing light emitted from the semiconductor light-emitting element and outputting visible light. The visible-light luminescent element includes a substrate, a light-reflecting layer formed on the substrate and containing light scattering particles, and a luminescent layer containing phosphor particles. The luminescent layer absorbs light emitted from the semiconductor light-emitting element and output visible light. The luminescent layer further absorbs light that is emitted from the semiconductor light-emitting element, arrives at and is reflected from the light scattering particles, and output the visible light.
摘要:
A light-emitting device includes a package having, on a surface thereof, a first portion surrounded by a second portion; a semiconductor blue color light-emitting element mounted on the first portion; a first transparent resin layer covering the semiconductor blue color light-emitting element and contacted with the first and second portions. The first transparent resin layer in cross section has an arch-like outer profile. A laminated body having in cross section an arch-like profile is formed on the first transparent resin layer with end faces of the laminated body being contacted with the second portion, and includes in order a red fluorescent layer, a yellow fluorescent layer, a second transparent resin layer and a green fluorescent layer, the second transparent resin layer having a center portion disposed between end face portions, the center portion having a larger thickness than thicknesses of the end face portions.
摘要:
A light-emitting device is provided, which includes a package having a first portion and a second portion surrounding it, a semiconductor light-emitting element mounted on the first portion and emitting a light having an emission peak in a near-ultraviolet region, a transparent resin layer covering the semiconductor light-emitting element and contacted with the package, and a laminated body formed on the transparent resin layer with end faces of the laminated body being contacted with the second portion. The transparent resin layer has an arch-like outer profile perpendicular cross section. The laminated body has an arch-like outer profile in perpendicular cross section and comprises a red fluorescent layer, a yellow fluorescent layer, a green fluorescent layer and a blue fluorescent layer laminated in the mentioned order. The yellow fluorescent layer has a top portion which is made larger in thickness than that of the end face portions thereof.