Halo-borate luminescent materials and preparation methods thereof
AssigneeOcean's King Lighting Science & Technology Co., Ltd.
InventorsMingjie Zhou, Qiurong Liao, Wenbo Ma
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Abstract
Halo-borate luminescent materials and preparation methods thereof are provided. The said luminescent materials are represented by the following general formula: Ca2-xBO3Cl1-yFy:xEu2+, zM0, wherein M0 is selected from one of Ag, Au, Pt, Pd or Cu metal nano-particles; 0.001≦x≦0.1, 0≦y≦0.2, 0≦z≦0.01. The said luminescent materials have excellent chemical stability and high luminous intensity. The said preparation methods have simple technique, no pollution, manageable process conditions and low equipment requirement, and are beneficial to industry production.
Claims10
A halogen borate phosphor, represented by the following general formula:
- Ca2-xBO3Cl1-yFy:xEu2+,zM0;
- wherein M0 represents metal nano-particles selected from the group consisting of Ag, Au, Pt, Pd and Cu;
- 0.001≦x≦0.1, 0≦y≦0.2, 0≦z≦0.01.
A method of preparing a halogen borate phosphor, comprising the following steps:
- step S1, weighing and dissolving calcium source compound, boron source compound, chlorine source compound, fluorine source compound, and europium source compound in water according to a composition of a formula of Ca2-xBO3Cl1-yFy:xEu2+, zM0 to prepare a mixed solution, wherein 0.001≦x≦0.1, 0≦y≦0.2;
- step S2, adding chelating agent and crosslinking agent successively to the mixed solution obtained in the step S1 to prepare a chelate solution;
- step S3, adding surface-treated nano-particle sol of M0 to the chelate solution prepared in step S2, stirring and heating in a water bath, drying to obtain a precursor, wherein M0 represents metal nano-particles selected from the group consisting of Ag, Au, Pt, Pd and Cu;
- and
- step S4, pre-sintering, cooling, grinding, and then calcining the precursor obtained in step S3 in a reducing atmosphere, cooling, grinding to obtain the halogen borate phosphor represented by the following general formula:
- Ca2-xBO3Cl1-yFy:xEu2+, zM0.
Dependencies are inferred from the claim text.