Method for preparing calcium lanthanum molybdate europium-doped luminous olive sphere

A football, lanthanum molybdate technology, applied in the directions of luminescent materials, chemical instruments and methods, can solve the problems of uneven appearance of lanthanum molybdate calcium doped europium luminescent football, affecting the intensity of luminescent powder, etc. The effect of low equipment requirements and low reaction temperature
CN107011902AInactive Publication Date: 2017-08-04SHANGHAI INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI INST OF TECH
Publication Date
2017-08-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for preparing a calcium lanthanum molybdate europium-doped luminous olive sphere. The method disclosed by the invention comprises the following steps: mixing a lanthanum nitrate solution, a calcium nitrate solution and a europium nitrate solution; adding a complexing agent and sodium molybdate, stirring at a normal temperature so as to obtain a reaction precursor solution; transferring the reaction precursor solution into a hydrothermal reactor for carrying out a hydrothermal reaction; cooling, centrifuging and washing after the hydrothermal reaction is ended, thereby obtaining the calcium lanthanum molybdate europium-doped luminous olive sphere sample. The preparation method disclosed by the invention is low in reaction temperature, low in equipment requirement and simple in operation; the prepared calcium lanthanum molybdate europium-doped luminous olive sphere is regular in morphology, uniform in size and excellent in luminous property.
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Description

technical field

[0001] The invention belongs to the technical field of rare earth luminescent materials, and relates to a luminescent football, in particular to a preparation method of a calcium lanthanum molybdate-doped europium luminescent football. Background technique

[0002] White light LED has the advantages of small size, high luminous efficiency, long life, fast response, safe use, environmental protection and no pollution, etc., so it is widely used in many fields such as indoor lighting, LCD backlight, information display, traffic sign lights, etc., and gradually began to It has become an eye-catching fourth-generation lighting source instead of incandescent lamps, tricolor fluorescent lamps and high-pressure gas discharge lamps. However, due to the lack of red light components in white light, white LED lighting sources have many problems such as low luminous efficiency, poor color rendering and poor color reproduction of the light source. Therefore, the synthesi...

Claims

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