Borate luminescent materials, preparation methods and uses thereof
AssigneeOcean's King Lighting Science & Technology Co., Ltd.
InventorsMingjie Zhou, Jun Liu, Wenbo Ma
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Abstract
Borate luminescent materials, preparation methods and uses thereof are provided. The luminescent material is a blend of metal M nanoparticles and (In1-xRex)BO3, wherein Re is one or two selected from Tm, Tb, Eu, Sm, Gd, Dy and Ce, M is one or two selected from metal nano particles of Au, Ag, Pt or Pd, 0<x≦0.5, 0<z≦1×10−2. Compared to the luminescent materials in the prior art, the said luminescent materials have higher luminous intensity and luminous efficiency, which can be used in field emission displays or light source.
Claims9
Borate luminescent materials, wherein the borate luminescent material is a blend of metal M nanoparticles and (In1-xRex)BO3, x is in the range of 0<x≦0.5, Re is rare-earth element, Re is one or two elements selected from Tm, Tb, Eu, Sm, Gd, Dy and Ce;
- M represents metal nano particles, M is any one or two metals selected from gold, silver, platinum and palladium;
- z is in the range of 0<z≦1×10−2, z is the molar ratio of M to (In1-xRex)BO3.
Preparation methods of borate luminescent materials, comprising:
- preparing metal M nano particles colloid:
- dissolving metal M compound in solvent to prepare solution of metal M compound;
- then adding assistant agent to obtain mixed solution;
- subsequently, adding reducing agent solution into mixed solution, after the complete reaction, adding polyvinylpyrrolidone, stirring, obtaining metal M nano particles colloid;
- wherein, M represents metal nano particles, M is any one or two metals selected from gold, silver, platinum and palladium;
- preparing (In1-xRex)BO3 solution:
- according to the stoichiometric ratio of each element in the general formula (In1-xRex)BO3, weighing In(NO3)3, Re(NO3)3 and compound used as source of boron then adding into ethanol solution, dissolving and mixing to obtain mixed ethanol solution of (In1-xRex)BO3;
- wherein, x is in the range of 0<x≦0.5, Re is rare-earth element, Re is one or two elements selected from Tm, Tb, Eu, Sm, Gd, Dy and Ce;
- preparing a blend of metal M nanoparticles and (In1-xRex)BO3:
- according to the molar ratio z of M to (In1-xRex)BO3, adding the obtained said metal M nano particles colloid into said mixed ethanol solution of (In1-xRex)BO3, heating in a water bath at 75° C. to 90° C., and drying to obtain precursors, pre-burning and calcining said precursors, then cooling, grinding, obtaining borate luminescent materials, wherein, z is the molar ratio of M to (In1-xRex)BO3, z is in the range of 0<z≦1×10−2.
Dependencies are inferred from the claim text.