Luminescent material and preparation method thereof
AssigneeOcean's King Lighting Science & techin
InventorsMingjie Zhou, Chaopu Shi, Wenbo Ma
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Abstract
The formula of a luminescent material is NaY1-xLnxGeO4, wherein Ln is lanthanon, and the value of x is 0<x≦0.2. The luminescent material adulterated with lanthanon constitutes germanate luminescent material comprising lanthanon, which improves efficiently the stability and luminescent performance of the luminescent material. The presence of lanthanon enables the luminescent material to emit light with different colors such as red, green, blue, etc. under the excitation of cathode rays, and be better used in a filed emission device. In the preparation method of the luminescent material, source components are mixed up and directly and sintered, and the luminescent material is acquired.
Claims17
A luminescent material, having a chemical formula of NaY1-xLnxGeO4, wherein Ln is a rare earth element, and x is in a range of 0<x≦x0.2.
A method for preparing a luminescent material, comprising the steps of:
- providing a source compound of Na, a source compound of Ln, a source compound of Y and a source compound of Ge according to stoichiometric ratio of elements in a chemical formula NaY1-xLnxGeO4, wherein Ln is a rare earth element, and x is in a range of 0<x≦0.2;
- mixing the source compound of Na, the source compound of Ln, the source compound of Y and the source compound of Ge, and milling them to a mixed powder;
- and
- sintering the mixed powder, cooling to room temperature, and milling to give the luminescent material.
Dependencies are inferred from the claim text.