Title:
PHOSPHOR, LIGHT-EMITTING ELEMENT AND LIGHTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/077132
Kind Code:
A1
Abstract:
Provided are: a solid solution lithium-containing α-sialon phosphor, wherein Li+ is made to form a solid solution in order to stabilize the structure, having excellent luminous efficiency compared to phosphors of the prior art; a light-emitting element; and a lighting device. With regard to a europium-activated solid solution lithium-containing α-sialon: the lattice constant a is set at 0.7820 to 0.7835 nm, the lattice constant c is set at 0.5645 to 0.5670 nm, the oxygen content is set at 0.4 to 1.2 mass%, and the europium content is set at 0.3 to 1.2 mass%; and the peak wavelength of the fluorescence spectrum when excited by monochromatic light having a peak wavelength ranging from 450 to 460 nm is set at a range of 580 to 595 nm.
Inventors:
EMOTO HIDEYUKI (JP)
Application Number:
PCT/JP2013/079438
Publication Date:
May 22, 2014
Filing Date:
October 30, 2013
Export Citation:
Assignee:
DENKI KAGAKU KOGYO KK (JP)
EMOTO HIDEYUKI (JP)
EMOTO HIDEYUKI (JP)
International Classes:
C09K11/64; C09K11/08; F21S2/00; F21V3/00; F21V3/04; F21V9/16; H01L33/50; F21Y101/02
Domestic Patent References:
| WO2011108740A1 | 2011-09-09 | |||
| WO2007004640A1 | 2007-01-11 | |||
| WO2007004493A1 | 2007-01-11 | |||
| WO2007004493A1 | 2007-01-11 | |||
| WO2010018873A1 | 2010-02-18 |
Foreign References:
| JP2006307081A | 2006-11-09 | |||
| JP2004067837A | 2004-03-04 | |||
| JP2005036038A | 2005-02-10 | |||
| JP2002363554A | 2002-12-18 | |||
| JP2010202738A | 2010-09-16 |
Other References:
RONG-JUN XIE ET AL.: "HIGHLY EFFICIENT WHITE-LIGHT-EMITTING DIODES FABRICATED WITH SHORT-WAVELENGTH YELLOW OXYNITRIDE PHOSPHORS", APPLIED PHYSICS LETTERS, vol. 88, no. 10, 1 January 2006 (2006-01-01), pages 101104-1 - 101104-3, XP012080442, DOI: HTTP://DX.DOI.ORG/10.1063/1.2182067
RONG-JUN XIE: "WAVELENGTH-TUNABLE AND THERMALLY STABLE LI-A-SIALON:EU 2+ OXYNITRIDE PHOSPHORSFOR WHITE LIGHT-EMITTING DIODES", APPLIED PHYSICS LETTERS, vol. 89, no. 24, 1 January 2006 (2006-01-01), pages 241103-1 - 241103-3, XP012087548, DOI: HTTP://DX.DOI.ORG/10.1063/1.2402880
See also references of EP 2921543A4
RONG-JUN XIE: "WAVELENGTH-TUNABLE AND THERMALLY STABLE LI-A-SIALON:EU 2+ OXYNITRIDE PHOSPHORSFOR WHITE LIGHT-EMITTING DIODES", APPLIED PHYSICS LETTERS, vol. 89, no. 24, 1 January 2006 (2006-01-01), pages 241103-1 - 241103-3, XP012087548, DOI: HTTP://DX.DOI.ORG/10.1063/1.2402880
See also references of EP 2921543A4
Attorney, Agent or Firm:
WATANABE Kaoru et al. (JP)
Kaoru Watanabe (JP)
Kaoru Watanabe (JP)
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