发明名称 |
METHOD OF MANUFACTURING FLUORIDE PHOSPHOR |
摘要 |
A method of manufacturing a fluoride phosphor includes mixing a first solution which contains at least Mn and F, a second solution which contains at least K and F, and a third solution which contains at least Si and F to form phosphor cores whose composition is represented by a formula K2[M1-aMn4+aF6] wherein a satisfies 0<a<0.2, and M includes at least one selected from group-IV elements of Ti, Zr, and Hf and group IVB elements of Si, Ge, Sn. The phosphor cores and a fourth solution containing a reducing agent are mixed to form a surface region on each of the phosphor cores so that a concentration of tetravalent Mn on the surface region of one of the phosphor cores is lower than in an inner region of the one of the phosphor cores. |
申请公布号 |
US2015322338(A1) |
申请公布日期 |
2015.11.12 |
申请号 |
US201514804337 |
申请日期 |
2015.07.21 |
申请人 |
NICHIA CORPORATION |
发明人 |
YOSHIDA Tomokazu |
分类号 |
C09K11/61 |
主分类号 |
C09K11/61 |
代理机构 |
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代理人 |
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主权项 |
1. A method of manufacturing a fluoride phosphor, comprising:
mixing a first solution which contains at least Mn and F, a second solution which contains at least K and F, and a third solution which contains at least Si and F to form phosphor cores whose composition is represented by a formula K2[M1-aMn4+aF6] wherein a satisfies 0<a<0.2, and M comprises at least one selected from group-IV elements of Ti, Zr, and Hf and group IVB elements of Si, Ge, Sn; and mixing the phosphor cores and a fourth solution containing a reducing agent to form a surface region on each of the phosphor cores so that a concentration of tetravalent Mn on the surface region of one of the phosphor cores is lower than in an inner region of the one of the phosphor cores. |
地址 |
Anan-shi JP |