Orange-red long afterglow Luminescent Material

A long afterglow luminescence, orange-red technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of waste gas human body and environmental hazards, complex production process, difficult to meet needs and other problems, achieve non-radioactive, simple preparation method, reduce effect of miscellaneous
CN101565614AInactive Publication Date: 2009-10-28LANZHOU UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LANZHOU UNIVERSITY
Publication Date
2009-10-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention relates to a luminescent Material which can send out orange-red light through the inspiration of ultraviolet light or sunlight and has long afterglow, and a method for preparing the material. The luminescent material of the invention is an orange-red long afterglow luminescent material with a general formula of Ca(2-x-y)SnO4:Smx,My, wherein M is zinc or cadmium or the combination of zinc and cadmium; x and y are the molar ratio coefficients of corresponding doped ions relatively to the Ca2SnO4, wherein, x=0.001-0.150, and y=0-0.150. The preparing method of the luminescent material according to the invention adopts a high-temperature solid phase method.
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Description

technical field

[0001] The invention relates to a luminescent material which can emit orange-red light and has a long afterglow after being excited by ultraviolet light or sunlight, and a preparation method of the material. Background technique

[0002] Long-lasting luminescent material is a kind of photoluminescent material, which can absorb the energy of external light and store the energy. After the excitation light source is turned off, the stored energy is slowly released in the form of visible light at room temperature. It has the advantages of no pollution, safety, energy saving and economy. Since the 1990s, people have successively invented rare earth ion-doped aluminate system and silicate system long-lasting luminescent materials. The long afterglow materials of the sulfide system have been improved, but the luminescent colors of these two types of luminescent materials are generally green, chromatic, blue-green, etc., which are difficult to meet the needs. There...

Claims

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