| 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 | US9222017(B2) | 申请公布日期 | 2015.12.29 |
| 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;H01L33/50;H01L33/00;H01L33/06;C09K11/67;C09K11/02;H01L33/54;G02F1/1335 | 主分类号 | C09K11/61 |
| 代理机构 | Mori & Ward, LLP | 代理人 | Mori & Ward, LLP |
| 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 | ||