Abstract: A wavelength conversion member includes a support, and a wavelength conversion layer that includes a phosphor particle group and a sealing member to seal the phosphor particle group and that is provided directly or through an other layer on the support. A predetermined region, in which a cross-sectional area rate of the phosphor particle group is not less than 50%, is included in an arbitrary cross section of the wavelength conversion layer taken parallel to a thickness direction thereof. The predetermined region includes a rectangular region with a width of 700 ?m and a thickness of 50 ?m from a bottom surface of the wavelength conversion layer when a thickness of the wavelength conversion layer is not less than 50 ?m, or a rectangular region with a width of 700 ?m and a thickness equal to the thickness of the wavelength conversion layer when it is less than 50 ?m.

Abstract: Provided is a particulate phosphor including a single crystal having a composition represented by a compositional formula (Y1-x-y-zLuxGdyCez)3+aAl5?aO12 (0?x?0.9994, 0?y?0.0669, 0.001?z?0.004, ?0.016?a?0.315) and a particle diameter (D50) of not less than 20 ?m. Also provided is a light-emitting device including a phosphor-including member that includes the phosphor and a sealing member including a transparent inorganic material sealing the phosphor or a binder including an inorganic material binding particles of the phosphor, and a light-emitting element that emits a blue light for exciting the phosphor.

Abstract: A wavelength conversion member includes a sintered body of a phosphor. An average diameter of pores in an arbitrary cross section falls within a range of not less than 0.28 ?m and not more than 0.98 ?m. A ratio of an area of pores to a whole area in an arbitrary cross section falls within a range of not less than 0.04% and not more than 2.7%. An average diameter of grains of the phosphor in an arbitrary cross section falls within a range of not less than 1 ?m and not more than 3 ?m.

Abstract: Provided is a particulate phosphor including a single crystal having a composition represented by a compositional formula (Y1-x-y-zLuxGdyCez)3+aAl5?aO12 (0?x?0.9994, 0?y?0.0669, 0.001?z?0.004, ?0.016?a?0.315) and a particle diameter (D50) of not less than 20 ?m. Also provided is a light-emitting device including a phosphor-including member that includes the phosphor and a sealing member including a transparent inorganic material sealing the phosphor or a binder including an inorganic material binding particles of the phosphor, and a light-emitting element that emits a blue light for exciting the phosphor.

Abstract: A light emitting device includes a laser diode that emits a blue light, and a wavelength conversion part that absorbs a part of light emitted from the laser diode and converts a wavelength thereof. The wavelength conversion part includes a YAG-based single crystal phosphor. Irradiance of light emitted from the laser diode and irradiated on the wavelength conversion part is not less than 80 W/mm2.

Abstract: A phosphor-containing member includes a transparent member, and a plurality of granular single crystal phosphors dispersed in the transparent member. Each of the plurality of granular single crystal phosphors includes a YAG crystal as a mother crystal. The plurality of granular single crystal phosphors are prepared by crushing the YAG crystal. The YAG crystal has a composition represented by a formula of Y3-x-yGdxCeyAl5O12-w (0.03?x?0.2, 0.003?y?0.2, ?0.2?w?0.2). Reduction of fluorescence intensity of the phosphors is less than 3% when an excitation light wavelength is 460 nm and a temperature is increased from 25° C. to 100° C.

Abstract: As one of purposes, the present invention provides: a single-crystal phosphor which can exhibit excellent properties under high-temperature conditions; and a light-emitting device in which the phosphor is used. As one embodiment, a single-crystal phosphor is provided, which has a chemical composition represented by the compositional formula: Y1-x-y-zLuxGdyCez)3+aAl5-aO12(0?x?0.9994, 0?y?0.0669, 0.0002?z?0.0067,?0.016?a?0.315).

Abstract: A light emitting device includes a laser diode that emits a blue light, and a wavelength conversion part that absorbs a part of light emitted from the laser diode and converts a wavelength thereof. The wavelength conversion part includes a YAG-based single crystal phosphor. Irradiance of light emitted from the laser diode and irradiated on the wavelength conversion part is not less than 80 W/mm2.

Abstract: A phosphor-containing member includes a transparent member, and particles of a single crystal phosphor dispersed in the transparent member. The single crystal phosphor has a composition represented by a compositional formula (Y1?a?bLuaCeb)3+cAl5?cO12 (where 0?a?0.9994, 0.0002?b?0.0067, ?0.016?c?0.315), and Commission International de l'Eclairage (CIE) chromaticity coordinates x, y of an emission spectrum satisfy a relationship of ?0.4377x+0.7384?y??0.4377x+0.7504 when a peak wavelength of excitation light is 450 nm and temperature is 25° C.

Abstract: According to one embodiment of the present invention, the light emitting device includes an LED element, a side wall which surrounds the LED element, a phosphor layer which is fixed to the side wall with an adhesive layer therebetween, and is positioned above the LED element, and a metal pad as a heat dissipating member. The side wall includes an insulating base which surrounds the LED element and a metal layer which is formed on a side surface at the LED element side of the base, and is in contact with the metal pad and the adhesive layer. The adhesive layer includes a resin layer that includes a resin containing particles which have higher thermal conductivity than the resin or a layer that includes solder.

Abstract: A flat plate-shaped phosphor member includes a plurality of granular single crystal phosphors, each of which including a YAG crystal as a mother crystal, the YAG crystal having a composition represented by a formula of Y3-x-yGdxCeyAl5O12-w (0.03?x?0.2, 0.003?y?0.2, ?0.2?w?0.2). Reduction of fluorescence intensity of the phosphor is less than 3% when an excitation light wavelength is 460 nm and a temperature is increased from 25° C. to 100° C.

Abstract: According to one embodiment of the present invention, the light emitting device includes an LED element, a side wall which surrounds the LED element, a phosphor layer which is fixed to the side wall with an adhesive layer therebetween, and is positioned above the LED element, and a metal pad as a heat dissipating member. The side wall includes an insulating base which surrounds the LED element and a metal layer which is formed on a side surface at the LED element side of the base, and is in contact with the metal pad and the adhesive layer. The adhesive layer includes a resin layer that includes a resin containing particles which have higher thermal conductivity than the resin or a layer that includes solder.

Abstract: A light-emitting device includes a light-emitting element to emit a bluish light, and a yellowish phosphor to absorb the light emitted by the light-emitting element and produce a yellowish fluorescence. The yellowish phosphor comprises a single crystal phosphor comprising a composition represented by a compositional formula (Y1-a-bLuaCeb)3+cAl5-cO12 (where 0?a?0.9994, 0.001?b?0.0067, ?0.016?c?0.315. Commission International de l'Eclairage (CIE) chromaticity coordinates x and y of an emission spectrum obtained by using CIE 1931 color-matching function to satisfy a relationship of ?0.4377x+0.7384?y??0.4377x+0.7504 when a peak wavelength of excitation light is 450 nm and temperature is 25° C. The single crystal phosphor is disposed off of the light-emitting element.

Abstract: According to one embodiment of the present invention, the light emitting device includes an LED element, a side wall which surrounds the LED element, a phosphor layer which is fixed to the side wall with an adhesive layer therebetween, and is positioned above the LED element, and a metal pad as a heat dissipating member. The side wall includes an insulating base which surrounds the LED element and a metal layer which is formed on a side surface at the LED element side of the base, and is in contact with the metal pad and the adhesive layer. The adhesive layer includes a resin layer that includes a resin containing particles which have higher thermal conductivity than the resin or a layer that includes solder.

Abstract: As one of purposes, the present invention provides: a single-crystal phosphor which can exhibit excellent properties under high-temperature conditions; and a light-emitting device in which the phosphor is used. As one embodiment, a single-crystal phosphor is provided, which has a chemical composition represented by the compositional formula: (Y1-x-y-zLuxGdyCez)3+aAl5-aO12(0?x?0.9994, 0?y?0.0669, 0.0002?z?0.0067, ?0.016?a?0.315).

Abstract: According to one embodiment of the present invention, the light emitting device includes an LED element, a side wall which surrounds the LED element, a phosphor layer which is fixed to the side wall with an adhesive layer therebetween, and is positioned above the LED element, and a metal pad as a heat dissipating member. The side wall includes an insulating base which surrounds the LED element and a metal layer which is formed on a side surface at the LED element side of the base, and is in contact with the metal pad and the adhesive layer. The adhesive layer includes a resin layer that includes a resin containing particles which have higher thermal conductivity than the resin or a layer that includes solder.

Abstract: Provided are a YAG-based single crystal phosphor which produces fluorescence in an unconventional color and a phosphor-containing member and a light emitting device including the single crystal phosphor. Provided is a single crystal phosphor which includes a composition represented by composition formula (Y1?a?bLuaCeb)3+cAl5?cO12 (wherein 0?a?0.9994, 0.0002?b?0.0067 and ?0.016?c?0.315), and in which CIE chromaticity coordinates x and y of an emission spectrum satisfy a relationship of ?0.4377x+0.7384?y??0.4585x+0.7504 when a peak wavelength of excitation light is 450 nm and temperature is 25° C.

Abstract: A phosphor (and a method for manufacturing the same, and a light-emitting device that uses this phosphor) includes single crystals including YAG crystals as a mother crystal, the quantum efficiency of the phosphor at 25° C. being 92% or higher at an excitation light wavelength of 460 nm.

Abstract: A semiconductor device having a structure that can reduce stress due to difference in coefficients of thermal expansion and prevent or suppress generation of cracks, and a semiconductor device manufacturing method, are provided. The semiconductor device includes a single crystal silicon substrate having a main face on which semiconductor elements are formed and a side face intersecting with the main face, and a sealing resin provided covering at least a portion of the side face. The side face covered by the sealing resin is equipped with a first face with a plane direction forming an angle of ?5° to +5° to the plane direction of the main face.

Abstract: An infrared detecting device is provided that is capable of improving device characteristics thereof by narrowing the width of each beam portion. The infrared detecting device has an infrared detection portion having a thermoelectric transducing part formed over a semiconductor substrate via an air gap interposed therebetween, and the beam portions which are formed over the semiconductor substrate via the air gap interposed therebetween, support the infrared detection portion and electrically connect between the infrared detection portion and the semiconductor substrate, wherein each of the beam portions has an insulating material film and a conductive material layer exposed from the insulating material film to a side surface of each beam portion.