Bivalent bismuth ion-doped chloro-barium pentaborate red fluorescent material and preparation method thereof

A kind of barium chloropentaborate, red fluorescence technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., to achieve the effect of improving the color rendering index
CN102344802AActive Publication Date: 2012-02-08SOUTH CHINA UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTH CHINA UNIV OF TECH
Publication Date
2012-02-08

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Abstract

The invention provides a preparation method of a bivalent bismuth ion-doped chloro-barium pentaborate red fluorescent material, which comprises the following steps of: weighing a compound raw material containing barium, boracium, chlorine and bismuth according to mol ratio of barium to boracium to chlorine to bismuth being 2(1-x):5:1:2x, wherein x is more than or equal to 0.0001 and less than or equal to 0.10; uniformly grinding the raw materials and pre-sintering; controlling the temperature to be 400-750oC; taking out the pre-sintered sample; uniformly regrinding and sintering at high temperature; and controlling the temperature to be 800-1000oC; feeding the sintered sample in a reducing atmosphere with 800-1000oC and reacting for 15 minutes to 10 hours to obtain the required red fluorescent material. The fluorescent material prepared by the invention can be absorbed by ultraviolet and blue light spectrum regions and is excited by ultraviolet light or blue light to form red fluorescent light covering an interval of 600-750nm; and the fluorescent life of the fluorescent material is about 10 microseconds.
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Description

technical field

[0001] The invention relates to the field of luminescent material research, in particular to a divalent bismuth ion-doped barium chloropentaborate red fluorescent material and a preparation method thereof. Background technique

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Claims

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