National Institute for Materials Science

Mitsubishi Chemical Corporation

Sharp Kabushiki Kaisha Corporation

Fujikura Limited

Nissan Motor Company Limited

Nichia Corporation

Denka Company Limited

Citizen Electronics Co., Ltd.

National Institute for Research in Inorganic Materials

Showa Denko K.k.

Denki Kagaku Kogyo Kabushiki Kaisha

Sumitomo Chemical Company, Limited

National Institute of Advanced Industrial Science and Technology

Futaba Corporation

Phoenix Electric Co., Ltd.

Naoto Hirosaki

Takashi Takeda

Shiro Funahashi

Ken Sakuma

Mamoru Mitomo

Tomoyuki Kurushima

Kyota Ueda

Yuhei Inata

Hajime Yamamoto

Kohsei Takahashi

Rong-Jun Xie

Hiroshi Fukunaga

Kenichi Yoshimura

Eiichirou Narimatsu

Ryo Yoshimatsu

Kousuke Shioi

Naoki Kimura

Hisayuki Miki

Shintaro Watanabe

Makoto Izumi

Yoshio Akimune

Masamichi Harada

Akira Okada

Yoshinobu Yamamoto

Shoji Hosokawa

Naoto Kijima

Hideyuki Emoto

Takatoshi Seto

Koji Omichi

Masahiro Ibukiyama

Takayuki Shinohara

Yuichi Michiue

Toshiyuki Nishimura

Hiroyo Segawa

Motohide Ando

Shigetoshi Ito

Susumu Miyazaki

Tetsuya Gouda

Masakazu Ohashi

Kazunori Annen

Go Takeda

Ryuji Suzuki

Daiichiro Tanaka

Hiroaki Toyoshima

Taiyo Yamaura

Yusuke Okamoto

Takashi Fukuda

Takayoshi Ezuhara

Koichiro Masuko

Tetsuo Uchikoshi

Yuta Sakimoto

Satoru Inoue

Takahashi Takeda

Tatsuya Horie

Takayuki Suehiro

Kiyoshi Tamura

Atsushi Ooishi

Masato Akabane

Hisato Yoshimizu

Masahiro Central Research Institute Ibukiyama

Hideyuki Central Research Institute Emoto

Ken c/o Fujikura Ltd Sakuma

Naoki c/o Fujikura Ltd Kimura

Koichiro c/o Fujikura Ltd Masuko

A phosphor includes a crystal phase having a composition represented by ReMAMBMCDX, in which MA includes at least one of Ca, Sr, Ba, Na, K, Y, Gd, or La, MB includes at least one of Li, Mg, or Zn, MC includes at least one of Al, Si, Ga, In, or Sc, D is N (nitrogen) and/or O (oxygen), X includes at least one of F, Cl, Br, or I, Re includes at least one of Eu, Ce, Pr, Tb, or Dy, and a, b, c, d, e, and x satisfy the specific expressions, respectively. In the phosphor, when a content of B (boron) is designated as b (mass ppm), a value of Log(b) is 3.5 or less.

Phosphor, light-emitting device, illumination device, image display device, and indicator lamp for vehicle

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 2θ=38-39° is designated as Ix and the intensity of a peak that appears in a region where 2θ=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 having a minimum reflectance of 20% or more in a specific wavelength region, in which the specific wavelength region is from the emission peak wavelength of the phosphor to 800 nm, and a light-emitting device comprising the phosphor.

Provided are a new phosphor having emission characteristics different from the conventional nitride or oxynitride phosphor, a manufacturing method, and a light-emitting device. In an embodiment, the phosphor may include inorganic substance having crystal represented by A(D, E)Xincluding at least A, D, X (A is at least one kind of element selected from Mg, Ca, Sr, and Ba; and D is Si, and X is at least one kind of element selected from O, N, and F); and further includes, if necessary, E (E is at least one kind of element selected from B, Al, Ga, and In) wherein the crystal further includes M (M is at least one kind of element selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb). Upon irradiation of excitation source, the maximum value of emission peak in a wavelength range from 630 nm to 850 nm may occur.

Fluorescent body, method for manufacturing same, and light-emitting device using same

Provided is a phosphor which emits near-infrared light upon irradiation of visible light or ultraviolet light. A phosphor in an embodiment of the present invention includes an inorganic substance which contains at least an Eu element, an M[3] element (M[3] is at least one selected from the group consisting of Al, Y, La and Gd.), a Si element and nitrogen element, and also contains, if necessary, at least one element selected from the group consisting of M[1] element (M[1] is Li element.), an M[2] element (M[2] is at least one element selected from the group consisting of Mg, Ca, Ba and Sr.) and an oxygen element, while the phosphor has a maximum value of an emission peak at a wavelength in the range of 760 nm or more and 850 nm and less upon irradiation by an excitation source.

Phosphor, method for producing same and light emitting element

Phosphors include a CaAlSiNfamily crystal phase, wherein the CaAlSiNfamily crystal phase comprises at least one element selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm, and Yb.

Phosphor and light-emitting equipment using 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&#x3b8;=38-39&#xb0; is designated as Ix and the intensity of a peak that appears in a region where 2&#x3b8;=37-38&#xb0; 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 light-emitting device including a solid-state light source that emits light having a peak wavelength in the range of 480 nm or less and a fluorescent film that covers the solid-state light source and includes at least one kind of phosphor, wherein the fluorescent film includes at least one kind of near-infrared phosphor that is excited by light from the solid-state light source, has a peak wavelength in the range exceeding 700 nm, and has an emission spectrum with a full width at half maximum of 100 nm or more in a range including the peak wavelength.

Light-emitting device

A phosphor in which an element represented by Ris solid-solutionized in a phosphor host crystal represented by M(L, A)X, wherein M is at least one type of element selected from Mg, Ca, Sr, Ba and Zn, L is at least one type of element selected from Li, Na and K, A is at least one type of element selected from Al, Ga, B, In, Sc, Y, La and Si, X is at least one type of element selected from O, N, F and Cl (where all of X being N is excluded), R is at least one type of element selected from Mn, Cr, Ti, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho and Yb, &#x3b1;, &#x3b2;, &#x3b3; and &#x3b4; satisfy &#x3b1;+&#x3b2;+&#x3b3;+&#x3b4;=9, 0.00&#x3c;&#x3b1;&#x2264;1.30, 3.70&#x2264;&#x3b2;&#x2264;4.30, 3.70&#x2264;&#x3b3;&#x2264;4.30, and 0.00&#x3c;&#x3b4;&#x2264;1.30.

Phosphor and light-emitting device using same

Growing community of inventors

Tsukuba, Japan

Naoto Hirosaki