Title:
METHOD FOR PRODUCING GREEN LIGHT-EMITTING PHOSPHOR PARTICLES
Document Type and Number:
Japanese Patent JP2014145087
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide green light-emitting phosphor particles, an internal quantum efficiency of which does not decrease easily even when europium is doped in excess.SOLUTION: There are provided green light-emitting phosphor particles comprising (Sr, Ba, Ca)GaS:Eu(where 0.13≤x≤0.15) and having a value of (an internal quantum efficiency/an absorption efficiency) of 0.7 or more, by obtaining a powder containing europium and strontium from a solution containing an europium compound and a strontium compound by a wet process or obtaining a powder containing europium and an alkaline earth metal except radium from a solution containing an europium compound and an alkaline earth metal except radium by a wet process; mixing the powder obtained by the wet process and a powder of a gallium compound; and calcinating the mixed powder.
Inventors:
IZAWA TAKAMASA
KUSUKI TSUNEO
IGARASHI TAKAHIRO
KUSUKI TSUNEO
IGARASHI TAKAHIRO
Application Number:
JP2014103214A
Publication Date:
August 14, 2014
Filing Date:
May 19, 2014
Export Citation:
Assignee:
DEXERIALS CORP
International Classes:
C09K11/62; C09K11/08
Domestic Patent References:
| JP2009293022A | 2009-12-17 | |||
| JP2009096653A | 2009-05-07 | |||
| JP2009534866A | 2009-09-24 | |||
| JP2009094517A | 2009-04-30 |
Other References:
JPN7012003921; ＪＯＵＲＮＡＬ ＯＦ ＴＨＥ ＥＬＥＣＴＲＯＣＨＥＭＩＣＡＬ ＳＯＣＩＥＴＹ １４６（１１）, 1999, ４３１６-４３１９
JPN7012003922; ＪＯＵＲＮＡＬ ＯＦ ＴＨＥ ＥＬＥＣＴＲＯＣＨＥＭＩＣＡＬ ＳＯＣＩＥＴＹ １４８（７）, 2001, Ｄ８９-Ｄ９３
JPN7012003922; ＪＯＵＲＮＡＬ ＯＦ ＴＨＥ ＥＬＥＣＴＲＯＣＨＥＭＩＣＡＬ ＳＯＣＩＥＴＹ １４８（７）, 2001, Ｄ８９-Ｄ９３
Attorney, Agent or Firm:
Akira Koike
Seiji Iga
Seiji Iga
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