Title:
β-SIALON PHOSPHOR, METHOD FOR PRODUCING SAME, AND USE OF SAME
Document Type and Number:
WIPO Patent Application WO/2012/046288
Kind Code:
A1
Abstract:
[Problem] To provide an Eu-activated β-SiAlON phosphor which has high fluorescence emission efficiency and short fluorescence peak wavelength and is capable of achieving narrow band emission. [Solution] Provided is a β-SiAlON phosphor which is obtained using a β-SiAlON represented by general formula of Si6-zAlzOzN8-z as a matrix material and solid-solving Eu2+ hereinto as the luminescence center. The β-SiAlON crystals have a lattice constant a of 0.7605-0.7610 nm, a lattice constant c of 0.2906-0.2911 nm, an Eu content of 0.4-2% by mass and a first transition metal content of not more than 5 ppm.
Inventors:
EMOTO HIDEYUKI (JP)
Application Number:
PCT/JP2010/067359
Publication Date:
April 12, 2012
Filing Date:
October 04, 2010
Export Citation:
Assignee:
DENKI KAGAKU KOGYO KK (JP)
EMOTO HIDEYUKI (JP)
EMOTO HIDEYUKI (JP)
International Classes:
C09K11/64; C09K11/08; H01L33/50
Domestic Patent References:
| WO2007066733A1 | 2007-06-14 |
Foreign References:
| JP2007031201A | 2007-02-08 | |||
| JP2010185009A | 2010-08-26 | |||
| JP2009010315A | 2009-01-15 |
Attorney, Agent or Firm:
WATANABE KAORU (JP)
Kaoru Watanabe (JP)
Kaoru Watanabe (JP)
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Claims: