Title:
OPTICAL MATERIAL AND PRODUCTION METHOD THEREFOR, AND LIGHT EMITTING DIODE, OPTICAL ISOLATOR, AND OPTICAL PROCESSING APPARATUS WHICH USE SAID OPTICAL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2013/164991
Kind Code:
A1
Abstract:
Provided are: an optical material used in an optical isolator and used in a UV-excited yellow-light emitting material capable of emitting yellow light stably and with high efficiency, even if a large current is passed therethrough to induce the emission of high-intensity light; a production method for the optical material; a light emitting diode which is capable of yellow light emission and white light emission, and which is capable of emitting high-intensity light with high efficiency for extended periods of time; an optical isolator; and an optical processing apparatus. The optical material used in the optical isolator (210) and in the UV-excited yellow light emitting material (2) comprises a Ce-containing oxide, said Ce-containing oxide being a terbium-cerium-aluminium garnet single crystal in which a portion of the terbium of a terbium-aluminium garnet single crystal is substituted by cerium. The ratio of the number of moles of cerium to the total number of moles of terbium and cerium, i.e. the cerium composition ratio, is preferably in the range of 0.01mol%-50mol% inclusive. A portion of the aluminium may be substituted by scandium. A portion of the aluminium or scandium may be substituted by terbium, cerium, yttrium, lutetium, ytterbium, and/or thulium.
Inventors:
SHIMAMURA KIYOSHI (JP)
GARCIA VILLORA ENCARNACION ANTONIA (JP)
GARCIA VILLORA ENCARNACION ANTONIA (JP)
Application Number:
PCT/JP2013/062514
Publication Date:
November 07, 2013
Filing Date:
April 27, 2013
Export Citation:
Assignee:
NAT INST FOR MATERIALS SCIENCE (JP)
International Classes:
C09K11/80; C09K11/08; H01L33/50
Domestic Patent References:
| WO2011049102A1 | 2011-04-28 | |||
| WO2012014439A1 | 2012-02-02 |
Foreign References:
| JP2012001381A | 2012-01-05 | |||
| JP2002293693A | 2002-10-09 | |||
| JP2011213552A | 2011-10-27 | |||
| JP2010155891A | 2010-07-15 | |||
| JP2002293693A | 2002-10-09 |
Other References:
OPTICS AND SPECTROSCOPY, vol. 106, no. 3, 2009, pages 365 - 374, XP008173378
"COMPARATIVE STUDY ON THE SYNTHESIS, PHOTOLUMINESCENCE AND APPLICATION IN INGAN-BASED LIGHT-EMITTING DIODES OF TAG:CE3+ PHOSPHORS", JOURNAL OF SOLID STATE CHEMISTRY, vol. 180, no. 4, 2007, pages 1165 - 1170, XP022056825
"LUMINESCENT PROPERTIES OF CERIUM-ACTIVATED GARNET SERIES PHOSPHOR: STRUCTURE AND TEMPERATURE EFFECTS", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 155, no. 6, 2008, pages B517 - B520, XP055152072
"About high-luminance LED materials", 2005, NIKKAN KOGYO SHIMBUN LTD., pages: 44
MATERIALS SCIENCE AND ENGINEERING R, vol. 71, 2010, pages 1 - 34
JOURNAL OF CRYSTAL GROWTH, vol. 306, 2007, pages 195 - 199
JOURNAL OF CRYSTAL GROWTH, vol. 267, 2004, pages 188 - 193
See also references of EP 2789672A4
"COMPARATIVE STUDY ON THE SYNTHESIS, PHOTOLUMINESCENCE AND APPLICATION IN INGAN-BASED LIGHT-EMITTING DIODES OF TAG:CE3+ PHOSPHORS", JOURNAL OF SOLID STATE CHEMISTRY, vol. 180, no. 4, 2007, pages 1165 - 1170, XP022056825
"LUMINESCENT PROPERTIES OF CERIUM-ACTIVATED GARNET SERIES PHOSPHOR: STRUCTURE AND TEMPERATURE EFFECTS", JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 155, no. 6, 2008, pages B517 - B520, XP055152072
"About high-luminance LED materials", 2005, NIKKAN KOGYO SHIMBUN LTD., pages: 44
MATERIALS SCIENCE AND ENGINEERING R, vol. 71, 2010, pages 1 - 34
JOURNAL OF CRYSTAL GROWTH, vol. 306, 2007, pages 195 - 199
JOURNAL OF CRYSTAL GROWTH, vol. 267, 2004, pages 188 - 193
See also references of EP 2789672A4
Attorney, Agent or Firm:
HIRAYAMA KAZUYUKI (JP)
Kazuyuki Hirayama (JP)
Kazuyuki Hirayama (JP)
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