发明申请
- 专利标题: Nanometer-sized up-converting phosphor fluoride particles and process of preparation
- 专利标题(中): 纳米级上转换氟化磷颗粒及其制备方法
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申请号: US10511363申请日: 2003-04-15
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公开(公告)号: US20060003466A1公开(公告)日: 2006-01-05
- 发明人: Guangshun Yi , Baoquan Sun , Depu Chen , Yuxiang Zhou , Jing Cheng , Wenjun Yang , Yue Ge , Lianghong Guo
- 申请人: Guangshun Yi , Baoquan Sun , Depu Chen , Yuxiang Zhou , Jing Cheng , Wenjun Yang , Yue Ge , Lianghong Guo
- 优先权: CN02116679.X 20020415
- 国际申请: PCT/CN03/00268 WO 20030415
- 主分类号: G01N33/553
- IPC分类号: G01N33/553
摘要:
Nanometer-scaled up-converting fluoride phosphor particles and processes of making them are disclosed. In the process, an aqueous solution consisting of soluble salts of rare-earth metal ions at a molar ratio of (yttrium, lanthanum or gadolinium): ytterbium:(erbium, holmium, terbium or thulium)=(70-90):(0-29):(0.001-15) is mixed a rare-earth metal chelator and a soluble fluoride salt to form precipitates, which are then annealed at an elevated temperature to produce nanometer-scaled up-converting fluoride phosphor particles. The particle size is between 35 nm and 200 nm, and can be controlled by the amount of the metal chelator added to the solution. The nanometer-sized particle is applicable to many biological assays.