发明授权
US08414796B2 Nano-YAG:Ce phosphor compositions and their methods of preparation
有权
纳米YAG:Ce荧光粉组合物及其制备方法
- 专利标题: Nano-YAG:Ce phosphor compositions and their methods of preparation
- 专利标题(中): 纳米YAG:Ce荧光粉组合物及其制备方法
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申请号: US13417645申请日: 2012-03-12
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公开(公告)号: US08414796B2公开(公告)日: 2013-04-09
- 发明人: Dejie Tao , Yi-Qun Li , Shifan Cheng
- 申请人: Dejie Tao , Yi-Qun Li , Shifan Cheng
- 申请人地址: US CA Fremont
- 专利权人: Intematix Corporation
- 当前专利权人: Intematix Corporation
- 当前专利权人地址: US CA Fremont
- 代理机构: Pillsbury Winthrop Shaw Pittman LLP
- 代理商 David H. Jaffer
- 主分类号: C09K11/08
- IPC分类号: C09K11/08
摘要:
Disclosed herein are cerium doped, garnet phosphors emitting in the yellow region of the spectrum, and having the general formula (Y,A)3(Al,B)5(O,C)12:Ce3+, where A is Tb, Gd, Sm, La, Sr, Ba, Ca, and/or Mg, and substitutes for Y, B is Si, Ge, B, P, and/or Ga, and substitutes for Al, and C is F, Cl, N, and/or S, where C substitutes for O. Relative to a solid-state-reaction method, the instant co-precipitation methods provide a more homogeneous mixing environment to enhance the distribution of the Ce3+ activator in the YAG matrix. Such a uniform distribution has the benefit of an increased emission intensity. The primary particle size of the as-prepared phosphor is about 200 nm, with a narrow distribution.
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