TREATMENT METHOD OF Mn ACTIVATED POLYFLUORIDE FLUOPHOR

SOLUTION: To heat pre-manufactured red fluophor which is Mn activated polyfluoride represented by AMF:Mn (1), to 50°C or more in a gas containing a fluorine atom and practically no oxygen atom, where M is one or more kind of tetravalent element selected from Si, Ti, Zr, Hf, Ge and Sn, A is one or mo...

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Bibliographic Details
Main Authors KANEYOSHI MASAMI, WATAYA KAZUHIRO
Format Patent
LanguageEnglish
Japanese
Published 23.05.2016
Subjects
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Summary:SOLUTION: To heat pre-manufactured red fluophor which is Mn activated polyfluoride represented by AMF:Mn (1), to 50°C or more in a gas containing a fluorine atom and practically no oxygen atom, where M is one or more kind of tetravalent element selected from Si, Ti, Zr, Hf, Ge and Sn, A is one or more kind of alkali metal selected from Li, Na, K, Rb and Cs and contains at least Na and/or K .EFFECT: According to the invention, a Mn activated polyfluoride fluophor hardly being deteriorated even with lightning for long time at large current when used for white LED.SELECTED DRAWING: None 【解決手段】予め製造された、下記式（１）Ａ2ＭＦ6：Ｍｎ （１）（式中、ＭはＳｉ、Ｔｉ、Ｚｒ、Ｈｆ、Ｇｅ及びＳｎから選ばれる１種又は２種以上の４価元素、ＡはＬｉ、Ｎａ、Ｋ、Ｒｂ及びＣｓから選ばれ、かつ少なくともＮａ及び／又はＫを含む１種又は２種以上のアルカリ金属である。）で表されるＭｎ賦活複フッ化物である赤色蛍光体を、フッ素原子を含み、実質的に酸素原子を含まない気体中で、５０℃以上に加熱する。【効果】本発明によれば、白色ＬＥＤに使用した際に、大電流で長時間点灯させても劣化しにくいＭｎ賦活複フッ化物蛍光体が得られる。【選択図】なし
Bibliography:Application Number: JP20140220987