| 发明名称 |
METHOD FOR PRODUCING NITRIDE PHOSPHOR, SILICON NITRIDE POWDER FOR NITRIDE PHOSPHOR, AND NITRIDE PHOSPHOR |
| 摘要 |
Provided is a nitride phosphor comprising a (Ca,Sr)AlSiN 3 :Eu phosphor, of which the chemical composition can be controlled easily and which has excellent fluorescent properties. Provided is a method for producing a nitride phosphor represented by the formula: (Ca 1-x1-x2 Sr x1 Eu x2 ) a Al b Si c N 2a/3+b+4/3c (wherein 0.49<x1<1.0, 0.0<x2<0.02, 0.9‰¤a‰¤1.1, 0.9‰¤b‰¤1.1, 0.9‰¤c‰¤ 1.1). In the method, a silicon nitride powder is used as a raw material, wherein the silicon nitride powder has a specific surface area of 5 to 35 m 2 /g and also has such a property that the FS/FSO ((m 2 /g)/(mass%)) ratio is 8 to 53 and the FS/FIO ((m 2 /g)/(mass%)) ratio is 20 or more in which FSO (mass%) represents the ratio of the amount of oxygen existing in a region between the surface of each particle of the silicon nitride powder and a zone that is 3 nm directly below the surface of the particle to the amount of the silicon nitride powder by mass, FIO (mass%) represents the ratio of the amount of oxygen existing on the inner side of the zone that is 3 nm directly below the surface of the particle to the amount of the silicon nitride powder by mass, and FS (m 2 /g) represents a specific surface area. |
| 申请公布号 |
EP2966148(A1) |
申请公布日期 |
2016.01.13 |
| 申请号 |
EP20140760930 |
申请日期 |
2014.03.07 |
| 申请人 |
UBE INDUSTRIES, LTD. |
发明人 |
IWASHITA, KAZUKI;SUMINO, MAO;UEDA, TAKAYUKI;FUJINAGA, MASATAKA;JIDA, SHINSUKE |
| 分类号 |
C09K11/64;C04B35/584;C04B35/626;C09K11/08 |
主分类号 |
C09K11/64 |
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