Red and green fluorophor of borate and its preparing method
Title：
Red and green fluorophor of borate and its preparing method
Application Number：
 200510117115
Application Date：
 2005/11/01
Announcement Date：
 2006/03/22
Pub. Date：
Publication Number：
 1749353
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C09K 11/78
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Li Zhihua, Zeng Jinghui, Li Yadong
Key Words：
 borate, red, green, fluorophor, preparing method
Abstract：
 The present invention belongs to the field of luminescent material technology, and is red and green fluorophor with borate as matrix and its preparation process. The fluorophor is RE ion activated sodium lanthanum borate in the chemical expression of Na5La2(1-x)(BO3)3:Ln2x3+, where Ln is Eu or Tb and x is 0-0.4 mole. It is prepared through high temperature solid phase synthesis process or sol-gel process. The fluorophor of Eu or Tb ion doped Na5La2(BO3)3 has stable physical and chemical performance, and very high light emitting efficiency under the excitation of 254 nm or 365 nm ultraviolet ray. The preparation process has cheap material, simple apparatus, easy large scale production, high product quality, no pollution, wide application foreground and other advantages.
Claim：
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Last Update  
2008-4-17
  Selected patents owned by Tsinghua University filed in 2005 are loaded.
2008-3-31
  Selected patents owned by Tsinghua University filed in 2006 and 2007 are load.







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