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Title:
PHOSPHOR CERAMIC AND METHOD FOR PRODUCING LIGHT EMITTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/138530
Kind Code:
A1
Abstract:
The present invention provides: a phosphor ceramic which emits light when excited by means of excitation light; and a method for producing a light emitting device.　A method for producing a phosphor ceramic, said method comprising: a step for preparing a precursor that is either a molded body containing aluminum nitride or a sintered body containing aluminum nitride; and a step for obtaining an aluminum nitride phosphor ceramic, which has a europium content of more than 0.03% by mass but not more than 1.5% by mass, by bringing the precursor into contact with a gas that contains europium.　

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Inventors:
SADAMOCHI TAKESHI (JP)
Application Number:
PCT/JP2021/046929
Publication Date:
June 30, 2022
Filing Date:
December 20, 2021
Export Citation:
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Assignee:
NICHIA CORP (JP)
International Classes:
C04B35/582; C09K11/08; C09K11/64
Domestic Patent References:
WO2021206151A12021-10-14
Foreign References:
JP2008239386A2008-10-09
JP2014175482A2014-09-22
JP2004262750A2004-09-24
CN106221695A2016-12-14
CN103540316A2014-01-29
Attorney, Agent or Firm:
ICHIZAWA, KAWADA & ASSOCIATES (JP)
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