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Title:
PHOSPHOR, LIGHT EMITTING ELEMENT, AND LIGHT EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/129741
Kind Code:
A1
Abstract:
The present invention relates to a phosphor in which humidity resistance is improved by modifying the particle surface of a complex fluoride phosphor activated with Mn4+ that can achieve high-intensity red light emission, and also relates to a light emitting element and a light emitting device which excel in color rendering properties and in stability as a result of using said phosphor. This phosphor is represented by general formula A2MF6:Mn4+. Element A is an alkali metal element containing at least K. Element M is at least one metal element selected from Si, Ge, Sn, Ti, Zr, and Hf. F is fluorine and Mn is manganese. The phosphor is characterized by containing, on the particle surface thereof, a Ca-containing compound.

Inventors:
EMOTO, Hideyuki (5-1 Asahi-machi 3-chome, Machida-cit, Tokyo 60, 〒1948560, JP)
YANAGI, Shinichi (5-1 Asahi-machi 3-chome, Machida-cit, Tokyo 60, 〒1948560, JP)
ICHIKAWA, Masayoshi (1 Shinkai-machi, Omuta-cit, Fukuoka 10, 〒8368510, JP)
ITO, Kazuhiro (5-1 Asahi-machi 3-chome, Machida-cit, Tokyo 60, 〒1948560, JP)
Application Number:
JP2015/055382
Publication Date:
September 03, 2015
Filing Date:
February 25, 2015
Export Citation:
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Assignee:
DENKI KAGAKU KOGYO KABUSHIKI KAISHA (1-1 Nihonbashi-Muromachi 2-chome, Chuo-ku Tokyo, 38, 〒1038338, JP)
International Classes:
C09K11/61; C09K11/66; C09K11/67; H01L33/50
Foreign References:
JP2015044951A2015-03-12
JP2013533363A2013-08-22
JP2013014715A2013-01-24
JP2010209311A2010-09-24
Attorney, Agent or Firm:
UCHIDA, Naoto (WINGREEN, 302 Tomoda-Sanwa Building 1-37-4, Kanda-Jinbo-Cho, Chiyoda-k, Tokyo 51, 〒1010051, JP)
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