SILICATE FLUORESCENT MATERIAL AND PREPARATION METHOD THEREOF
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United States of America Patent
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Issued Date -
May 16, 2013
app pub date -
Jul 28, 2010
filing date -
Jul 28, 2010
priority date (Note) -
Abandoned
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Abstract
A silicate fluorescent material is provided. The general chemical formula of the luminescent material is Ln2SiO5:Tb, M, wherein Ln represents at least one of the elements selected from Y, Gd, La or Lu, M represents at least one of the nanoparticles selected from Ag, Au, Os, Ir, Pt, Ru, Rh or Pd, the mole ratio of Tb to Ln is greater than 0 but not greater than 0.25. The porous glass containing metal nanoparticles is prepared by introducing metal nano ions into the porous glass and extracting the uniformly dispersed metal nanoparticles from the porous glass via a chemical reduction method. A silicate fluorescent material with enhanced luminescence is obtained by substituting SiO2 which is the raw material in the process for preparing the silicate fluorescent material via the conventional high temperature solid phase sintering with the porous glass containing metal nanoparticles. The performance of the silicate fluorescent material is better and the light emitting efficiency of the silicate fluorescent material is higher compared with the conventional silicate fluorescent material.
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