Ocean's King Lighting Science and Technology Co., Ltd.

Shenzhen Ocean's King Lighting Engineering Co., Ltd.

Guitang Chen

Mingjie Zhou

Jun Liu

Wenbo Ma

Rong Wang

The invention belongs to the field of luminescent materials. Disclosed are silicate luminescent materials doped with metal nano particles and preparation methods there for. The silicate luminescent materials doped with metal nano particles are represented by the chemical formula:MLnSiO:xRE,yA; wherein M is one or two elements selected from Li, Na and K; Ln is one or two elements selected from Y, Sc, La and Lu; A is a metal nano particle selected from Ag, Au, Pt, Pd and Cu; RE is one or two ions selected from Eu, Gd, Tb, Tm, Sm, Ce and Dy; 0&#x3c;x&#x2266;0.1; 0&#x3c;y&#x2266;0.005. When silicate luminescent materials doped with metal nano particles of the invention are excitated by electron beam, they have higher luminescent efficiency. The luminescent materials are good to be used in field emission light source devices.

Silicate luminescent materials doped with metal nano particles and preparation methods therefor

A manganese-doped magnesium stannate luminescent material, which has a molecular formula of: MgSnO:Mn@SnO@M, where @ is a coating, where MgSnO:Mnis an outer shell layer, where SnOis an intermediate layer shell, where M is an inner core, where M is a metal nanoparticle, where M is at least one selected among Ag, Au, Pt, Pd, and Cu, where the value of x is 0&#x3c;x&#x2266;0.05, where y is the molar ratio between M and Sn, and where the value of y is 0&#x3c;y&#x2266;1&#xd7;10. The manganese-doped magnesium stannate luminescent material is a core-shell structure luminescent material, has a high internal quantum efficiency, great luminescent intensity, and the advantages of great stability and great luminescent properties. A method for preparing the manganese-doped magnesium stannate luminescent material has simple processes, low equipment requirements, and no pollution, is easy to control and applicable for industrial production, and has a broad application prospect.

Manganese-doped magnesium stannate luminescent material and preparation method therefor

The present invention provides a stannate fluorescent material having a formula: ASnO:Eu@SnO@M; wherein A is selected from the group consisting of Ca, Sr, and Ba; M is at least one metal nanoparticles selected from the group consisting of Ag, Au, Pt, Pd, and Cu; 0&#x3c;x&#x2266;0.05; y is a mole ratio of M to Sn, and 0&#x3c;y&#x2266;1&#xd7;10; @ represents coating, in the stannate fluorescent material, M serves as a core, SnOserves as an intermediate layer shell, and ASnO:Euserves as an outer layer shell. In the stannate fluorescent material, a core-shell structure is formed by coating at least one metal nanoparticles selected from the group consisting of Ag, Au, Pt, Pd, and Cu, since metal nanoparticles can improve the internal quantum efficiency of the fluorescent material, the stannate fluorescent material exhibits a higher luminous intensity.

Stannate fluorescent material and method for preparing same

A titanate luminescent material has a formula of ATiO:Pr@TiO@M; wherein A is at least one selected from the group consisting of Ca, Sr, and Ba; M is at least one nanoparticles selected from the group consisting of Ag, Au, Pt, Pd, and Cu; 0&#x3c;x&#x2266;0.01; y is the molar ratio between M and Ti in ATiO:Pr@TiO, and 0&#x3c;y&#x2266;1&#xd7;10; @ represents coating; M is a core, TiOis an intermediate layer shell, and ATiO:Pris an outer layer shell. The titanate luminescent material has a high stability and a better luminescent performance. A preparation method of the titanate luminescent material is also provided.

Titanate luminescent material and preparation method therefor

A core-shell structured silicate luminescent material and a preparation method thereof. The molecular formula of the luminescent material is: MLnSiO:xRE@SiO; where @ represents a coating, where M is one or two elements among Li, Na, and K, where Ln is one or two elements among Y, Sc, Lu and La, where the value of x is 0&#x3c;x&#x2266;0.6; and where RE is one, two, or three elements among Tb, Gd, Sm, Eu, Dy, Ce and Tm. The compositions of the luminescent material are all chemicals of increased chemical stability, and, when subjected to electron beam bombardment for an extended period, provide a stable matrix and do not decompose easily.

Core-shell structured silicate luminescent material and preparation method therefor

Disclosed is a metal nanoparticle-coating silicate luminescent material, which has a molecular formula of LiCaSiO:Tb@M; where @ represents a coating, M is at least one among Ag, Au, Pt, Pd, and Cu nanoparticles, wherex&#x2266;where y is the molar ratio between M and Si, and wherey&#x2266;. The composition of the silicate coated metal nanoparticle luminescent material is metal nanoparticles coated with LiCaSiO:Tb, all of which are substances having great chemical stability and having great stability when bombarded by large electron beams. Also provided in the present invention is a method for preparing the metal nanoparticle coating silicate luminescent material.

Growing community of inventors

Guangdong, China

Guitang Chen