Title:
LUMINESCENT CERAMICS AND WAVELENGTH CONVERTER
Document Type and Number:
WIPO Patent Application WO/2019/038967
Kind Code:
A1
Abstract:
Provided are luminescent ceramics in which photodegradation does not tend to occur. The luminescent ceramics comprise a pyrochlore compound comprising at least 0.01 mol% of Bi with respect to 100 mol% of general formula M1XM2YM3ZOW (where M1 is at least one element selected from the group consisting of La, Y, Gd, Yb, and Lu, M2 is at least one element selected from the group consisting of Zr, Sn, and Hf, M3 is at least one element selected from the group consisting of Ta, Nb, and Sb, and X, Y, Z, and W are positive numbers to maintain electrical neutrality), wherein when X+Y+Z=2.0, 0.005≤Z≤0.2, and wherein 3X+4Y+5Z is 7.02 or less.
Inventors:
KURETAKE SATOSHI (JP)
Application Number:
PCT/JP2018/009705
Publication Date:
February 28, 2019
Filing Date:
March 13, 2018
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
C09K11/78; H01L33/50
Domestic Patent References:
| WO2014119416A1 | 2014-08-07 | |||
| WO2013058065A1 | 2013-04-25 | |||
| WO2011158580A1 | 2011-12-22 | |||
| WO2015037395A1 | 2015-03-19 | |||
| WO2016190439A1 | 2016-12-01 | |||
| WO2018029906A1 | 2018-02-15 |
Foreign References:
| JP2009001443A | 2009-01-08 | |||
| JP2016145310A | 2016-08-12 | |||
| JP2017066245A | 2017-04-06 | |||
| JP2017036160A | 2017-02-16 | |||
| JP2015212311A | 2015-11-26 |
Other References:
KURETAKE, SATOSHI ET AL.: "Development of AB03- and AB207-type Transparent Ceramic Phosphors", ABSTRACTS OF THE ANNUAL MEETING OF THE CERAMIC SOCIETY OF JAPAN, 1 March 2016 (2016-03-01), ISBN: 978-4-931298-71-2
MAHESH S. K. ET AL.: "Influence of Cation Substitution and Activator Site Exchange on the Photoluminescence Properties of Eu3+ -Doped Quaternary Pyrochlore Oxide s", INORGANIC CHEMISTRY, vol. 52, no. 23, 14 November 2013 (2013-11-14), pages 13304 - 13313, XP055577981, ISSN: 1520-510X
WHITTLE, K. R. ET AL.: "The Role of Sn, Zr and Hf in the Radiation Damage in II, III, IV and V Pyrochlores", MATERIALS RESEARCH SOCIETY SYMPOSIA PROCEEDINGS, vol. 1383, 2012, pages 29 - 34, XP055577982, ISSN: 0272-9172
MAHESH S. K. ET AL.: "Influence of Cation Substitution and Activator Site Exchange on the Photoluminescence Properties of Eu3+ -Doped Quaternary Pyrochlore Oxide s", INORGANIC CHEMISTRY, vol. 52, no. 23, 14 November 2013 (2013-11-14), pages 13304 - 13313, XP055577981, ISSN: 1520-510X
WHITTLE, K. R. ET AL.: "The Role of Sn, Zr and Hf in the Radiation Damage in II, III, IV and V Pyrochlores", MATERIALS RESEARCH SOCIETY SYMPOSIA PROCEEDINGS, vol. 1383, 2012, pages 29 - 34, XP055577982, ISSN: 0272-9172
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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