PHOSPHOR, METHOD FOR PRODUCING SAME, AND LIGHT EMITTING DEVICE

Title:

PHOSPHOR, METHOD FOR PRODUCING SAME, AND LIGHT EMITTING DEVICE

Document Type and Number:

WIPO Patent Application WO/2014/091776

Kind Code:

A1

Abstract:

Provided are: a blue phosphor having an emission peak wavelength different to that of blue phosphors of the prior art; a method for producing the blue phosphor; and a high-brightness light emitting device that uses said phosphor. This phosphor is a crystalline phosphor represented by the general formula, MeaRebAlcSidOeNf (wherein: Me may include strontium or barium as an essential first element, and one or more elements selected from magnesium, calcium, scandium, yttrium and lanthanum as second elements; and Re may include europium as an essential first element, and one or more elements selected from manganese, cerium, terbium, ytterbium and samarium as second elements). Furthermore, composition ratios a, b, c, d, e and f, which are elemental ratios, satisfy the following relationships: a + b = 1, 0.005 < b < 0.25, 1.60 < c < 2.60, 2.50 < d <4.05, 3.05 < e < 5.00, and 2.75 < f < 4.40.

Inventors:

TAKEDA GO (JP)
YOSHIMATSU RYO (JP)
HIROSAKI NAOTO (JP)

Application Number:

PCT/JP2013/060109

Publication Date:

June 19, 2014

Filing Date:

April 02, 2013

Export Citation:

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Assignee:

DENKI KAGAKU KOGYO KK (JP)
NAT INST FOR MATERIALS SCIENCE (JP)
TAKEDA GO (JP)
YOSHIMATSU RYO (JP)
HIROSAKI NAOTO (JP)

International Classes:

C09K11/64; C09K11/08; F21S2/00; H01L33/50

Foreign References:

JP2009173706A	2009-08-06
JP2006089547A	2006-04-06
JP2007326914A	2007-12-20
JP2003206481A	2003-07-22
JP2010084151A	2010-04-15

Other References: