Title:
FLUORESCENT BODY, METHOD FOR MANUFACTURING SAME, AND LIGHT-EMITTING DEVICE USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/261691
Kind Code:
A1
Abstract:
The present invention can provide: a novel fluorescent body having novel light-emission characteristics different from those of a conventional nitride fluorescent body or a conventional oxynitride fluorescent body; a method for manufacturing the same; and a light-emitting device using the same. According to an embodiment of the present invention, the fluorescent body contains at least element A, element D, and element X (where A represents at least one element selected from the group consisting of Mg, Ca, Sr, and Ba, D represents Si element, and X represents at least one element selected from the group consisting of O, N, and F), and optionally contains, as necessary, an inorganic substance that further contains, in a crystal represented by A26(D,E)51X86 containing element E (where E represents at least one element selected from the group consisting of B, Al, Ga, and In), element M (where M represents at least one element selected from the group consisting of Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb). The fluorescent body optionally has a maximum value of a light-emission peak in a wavelength in a range of 630-850 nm when being irradiated with an excitation source.
Inventors:
HIROSAKI NAOTO (JP)
TAKEDA TAKASHI (JP)
FUNAHASHI SHIRO (JP)
TAKEDA TAKASHI (JP)
FUNAHASHI SHIRO (JP)
Application Number:
PCT/JP2020/014918
Publication Date:
December 30, 2020
Filing Date:
March 31, 2020
Export Citation:
Assignee:
NAT INST MATERIALS SCIENCE (JP)
International Classes:
C09K11/08; C09K11/59; C09K11/61; C09K11/62; C09K11/63; C09K11/64; H01L33/50
Domestic Patent References:
| WO2016063965A1 | 2016-04-28 | |||
| WO2011016486A1 | 2011-02-10 | |||
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Foreign References:
| JP2017190434A | 2017-10-19 | |||
| JP2009024038A | 2009-02-05 | |||
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Other References:
JOURNAL OF THE AMERICAN CERAMIC SOCIETY, vol. 85, no. 5, 2002, pages 1229 - 1234
NAOTO HIROSAK ET AL., CHEMISTRY OF MATERIALS, vol. 26, pages 4280 - 4288
See also references of EP 3992264A4
NAOTO HIROSAK ET AL., CHEMISTRY OF MATERIALS, vol. 26, pages 4280 - 4288
See also references of EP 3992264A4
Attorney, Agent or Firm:
AIKAWA, Toshihiko (JP)
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