Abstract: Phosphor particles are composed of one or two selected from a powdery phosphor formed of CASN and SCASN, wherein a particle size corresponding to a cumulative 50% is Dx50 and to a cumulative 90% is Dx90 in a volume-based integrated fraction of the phosphor particles, and where a particle size corresponding to a cumulative 50% is Dy50 and to a cumulative 90% is Dy90 after subjecting the particles to treatment, (a) Dx50 is between 0.5 ?m and 35 ?m, and (b) Dx90/Dy90 is between 0.7 and 15. The treatment; a dispersion liquid wherein 30 mg of the particles are uniformly dispersed in an aqueous solution of sodium hexametaphosphate having a concentration of 0.2% and put into a cylindrical container A vibrator part of an ultrasonic homogenizer is inserted and the liquid is irradiated with ultrasonic waves at a frequency of 19.5 kHz and an output of 150 W for 3 minutes.

Abstract: A fluoride phosphor, a composition of which is represented by General Formula (1), in which in a case where a cumulative 50% value is denoted by D50 and a cumulative 90% value is denoted by D90 in a volume-based particle size distribution curve obtained by a laser diffraction scattering method, D50 is 0.1 to 9.5 ?m and D90 is 0.5 to 16 ?m. General Formula (1): A2M(1-f)F6:Mn4+n In General Formula (1), an element A is one or more alkali metal elements including K, an element M is a Si simple substance, a Ge simple substance, or a combination of Si and one or more elements selected from the group consisting of Ge, Sn, Ti, Zr, and Hf, and 0<n?0.1 is satisfied.

Abstract: Phosphor particles for producing a wavelength conversion member of a projector, including ?-type sialon. A cured sheet having a film thickness of 50±5 ?m produced by using the particle satisfies the following optical characteristics: when an intensity at a peak wavelength of blue light emitted from a blue LED having a peak wavelength between 450 to 460 nm is defined as Ii [W/nm], and in a case where the blue light is emitted to one surface side of the cured sheet, when an intensity of light emitted from the other surface side of the cured sheet at a peak wavelength between 450 to 460 nm is defined as It [W/nm] and an intensity thereof at a peak wavelength between 500 to 560 nm is defined as Ip [W/nm], It/Ii is equal to or less than 0.50 and Ip/Ii is equal to or more than 0.03.

Abstract: A phosphor particle for a micro LED or a mini LED, consisting of CASN and/or SCASN. A cured sheet produced by the following sheet producing procedure using this phosphor particle satisfies the following optical characteristics. <Sheet Producing Procedure> (1) 40 parts by mass of the phosphor particle and 60 parts by mass of a silicone resin OE-6630 manufactured by Dow Corning Toray Co., Ltd. are subjected to a stirring treatment and a defoaming treatment using a rotation and revolution mixer to obtain a uniform mixture. (2) The mixture obtained in the section (1) is added dropwise to a first transparent fluororesin film, and a second transparent fluororesin film is further laminated on the dropped material to obtain a sheet-like material. This sheet-like material is molded into an uncured sheet using a roller having a gap in which 50 ?m is added to a total thickness of the first fluororesin film and the second fluororesin film.

Abstract: A ?-type sialon phosphor represented by the following expression 1, in which D50 is 10 ?m or less, and values of D10, D50, and D90 satisfy a relationship of the following expression 2 with respect to D10, D50, and D90 (each unit is [?m]) on a volume frequency basis as measured according to a laser diffraction/scattering method. Expression 1: Si12-aAlaObN16-b:Eux (wherein 0<a?3; 0<b?3; 0<x?0.1), expression 2: (D90?D10)/D50<1.6 (wherein the D10, D50, and D90 (each unit is [?m]) on a volume frequency basis as measured according to the laser diffraction/scattering method.

Abstract: A ?-type sialon phosphor represented by the following expression 1, in which D50 is 10 ?m or less, and values of D10, D50, and D90 satisfy a relationship of the following expression 2 with respect to D10, D50, and D90 (each unit is [?m]) on a volume frequency basis as measured according to a laser diffraction/scattering method. Expression 1: Si12-aAlaObN16-b:Eux (wherein 0<a?3; 0<b?3; 0<x?0.1), expression 2: (D90?D10)/D50<1.6 (wherein the D10, D50, and D90 (each unit is [?m]) on a volume frequency basis as measured according to the laser diffraction/scattering method.

Abstract: Provided is a fluoride phosphor having a composition represented by the general formula (1): A2SiF6:Mn4+??(1) in which A represents at least one alkali metal comprising at least K. The fluoride phosphor has a ratio (A1/A2) of an area (A1) of a spectrum in a range of from 637 eV or more to less than 645 eV in XPS measurement to an area (A2) of a spectrum in a range of from 682.8 eV or more to less than 690 eV in XPS measurement, of 0.0008 to 0.0025.

Abstract: It is an object of the present invention to provide a nonaqueous electrolyte secondary battery in which swelling due to charge-discharge cycling is inhibited. The nonaqueous electrolyte secondary battery including a flat electrode assembly in which a first electrode plate and a second electrode plate having a different polarity from the first electrode plate are wound with a separator provided therebetween.

Abstract: Provided is a fluoride phosphor having a composition represented by the general formula (1): A2SiF6:Mn4+??(1) in which A represents at least one alkali metal comprising at least K. The fluoride phosphor has a ratio (A1/A2) of an area (A1) of a spectrum in a range of from 645 eV or more to less than 651 eV in XPS measurement to an area (A2) of a spectrum in a range of from 682.8 eV or more to less than 690 eV in XPS measurement, of 0.0005 to 0.0010.

Abstract: Provided is a fluoride phosphor having a composition represented by the general formula (1): A2SiF6:Mn4+??(1) in which A represents at least one alkali metal comprising at least K. The fluoride phosphor has a ratio (A1/A2) of an area (A1) of a spectrum in a range of from 637 eV or more to less than 645 eV in XPS measurement to an area (A2) of a spectrum in a range of from 682.8 eV or more to less than 690 eV in XPS measurement, of 0.0008 to 0.0025.

Abstract: The present invention is directed to provide a hydrophobized phosphor not susceptible to separation at the interface with sealing resins and, by using this hydrophobized phosphor, a light-emitting device having excellent long-term stability and little change in luminance and emission color over time. The hydrophobized phosphor is characterized in that it comprises phosphor particles represented by the general formula Si6-zAlzOzN8-z:Eu2+ (where z is larger than 0 and no more than 4.2); and a surface layer consisting of a hydrophobic substance deposited on the surfaces of the phosphor particles; wherein the hydrophobic substance consists of a long-chain fatty acid having 12 or more carbon atoms, a silicone oil having a viscosity of 1.5 Pa·s or less, or a combination thereof. The light-emitting device is characterized in that it comprises the hydrophobized phosphor and a light-emitting element.

Abstract: The present invention is directed to provide a hydrophobized phosphor not susceptible to separation at the interface with sealing resins and, by using this hydrophobized phosphor, a light-emitting device having excellent long-term stability and little change in luminance and emission color over time. The hydrophobized phosphor is characterized in that it comprises phosphor particles represented by the general formula Si6?zAlzOzN8?z:Eu2+ (where z is larger than 0 and no more than 4.2); and a surface layer consisting of a hydrophobic substance deposited on the surfaces of the phosphor particles; wherein the hydrophobic substance consists of a long-chain fatty acid having 12 or more carbon atoms, a silicone oil having a viscosity of 1.5 Pa·s or less, or a combination thereof. The light-emitting device is characterized in that it comprises the hydrophobized phosphor and a light-emitting element.

Abstract: It is an object of the present invention to provide a nonaqueous electrolyte secondary battery in which swelling due to charge-discharge cycling is inhibited. The nonaqueous electrolyte secondary battery including a flat electrode assembly in which a first electrode plate and a second electrode plate having a different polarity from the first electrode plate are wound with a separator provided therebetween.

Abstract: An optical reception device realizes stabilization of reception sensitivity inexpensively and highly precisely. The optical reception device includes: a Mach-Zehnder type 1-bit delay unit including a one-terminal input port and two-terminal output ports for decoding an optical difference phase shift keying (DPSK) signal and provided with one or more phase control functions to control the phase state of light; photoelectric conversion means for branching a portion of an optical output signal output from the one-side output port of the Mach-Zehnder type 1-bit delay unit, to convert the branched portion into an electric signal; and a phase control unit for controlling the phase state of the Mach-Zehnder type 1-bit delay device by using as an error signal the output signal of the photoelectric conversion means.

Abstract: An optical reception device realizes stabilization of reception sensitivity inexpensively and highly precisely. The optical reception device includes: a Mach-Zehnder type 1-bit delay unit including a one-terminal input port and two-terminal output ports for decoding an optical difference phase shift keying (DPSK) signal and provided with one or more phase control functions to control the phase state of light; photoelectric conversion means for branching a portion of an optical output signal output from the one-side output port of the Mach-Zehnder type 1-bit delay unit, to convert the branched portion into an electric signal; and a phase control unit for controlling the phase state of the Mach-Zehnder type 1-bit delay device by using as an error signal the output signal of the photoelectric conversion means.