Dysprosium-doped lanthanum lithium molybdate fluorescent powder and preparation method thereof

A technology of lanthanum lithium molybdate and fluorescent powder, which is applied in the field of dysprosium-doped lanthanum lithium molybdate phosphor and its preparation, which can solve the problems of expensive raw materials, long preparation time, and health hazards, and achieve low pollution and short reaction time , the effect of improving output efficiency
CN107384397AInactive Publication Date: 2017-11-24SHAANXI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHAANXI UNIV OF SCI & TECH
Publication Date
2017-11-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to dysprosium-doped lanthanum lithium molybdate fluorescent powder and a preparation method thereof. Li2CO3 powder, La2O3 powder, MoO3 powder and Dy2O3 powder are taken in the mole ratio being 1:(1-x):4:x, ground and stirred uniformly, and a reactant material is obtained, wherein x ranges from 0.01 to 0.11; the reactant material is calcined at the temperature of 750-850 DEG C for 4-6 h, and a reaction product is obtained; the reaction product is cooled, taken out to be ground and then sieved, and the dysprosium-doped lanthanum lithium molybdate fluorescent powder is obtained. The fluorescent powder adopting the pure phase substance structure is formed with a high-temperature solid phase method, raw materials are more widely sourced, the cost is relatively low, and no toxic organic matter is formed; compared with an existing wet chemistry method, the preparation method is simple, low in pollution and high in yield, no acid or alkali is used, and the yield efficiency is effectively improved.
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Description

technical field

[0001] The invention belongs to the field of preparation of rare earth luminescent materials, and in particular relates to dysprosium-doped lanthanum lithium molybdate fluorescent powder and a preparation method thereof. Background technique

[0002] Inorganic rare earth luminescent materials are composed of matrix and activator. The host is the main body of the luminescent material, which is a compound with a certain crystal structure and good stability. Doped rare earth ions are used as activators, and the amount of activators is generally very small, which partially replaces the ions on the original site in the host crystal in the luminescent material, making the crystal structure form impurity defects. There are many kinds of materials that can be used as the matrix. Among them, the double molybdate with scheelite structure has attracted widespread attention. This type of compound has good thermal, physical and chemical stability. In the large family of...

Claims

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