Preparation method of manganese-base fluorescent powder

A fluorescent powder and manganese-based technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of complicated preparation process and unfavorable display of white light LED, and achieve the effect of low cost and improved display
CN104650876AActive Publication Date: 2015-05-27CHONGQING UNIV OF ARTS & SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHONGQING UNIV OF ARTS & SCI
Publication Date
2015-05-27

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Abstract

The invention relates to a preparation method of manganese-base fluorescent powder. The reaction is carried out on the raw material KMnO4 by using MeXTiF6 as a matrix and HF as a solvent in the presence of a ligand provider and a reducer, wherein Me can be K, Na, Li, Ca, Mg or other ions, and X is correspondingly 2-1. The preparation method has the advantages of high speed, great convenience, low cost and the like, and can prepare the manganese-base fluorescent powder, of which the emission spectrum is red broad peak, under the conditions of normal temperature and pressure.
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Description

technical field

[0001] The invention relates to the technical field of luminescent materials, in particular to a preparation method of manganese-based fluorescent powder. Background technique

[0002] At present, the mainstream technical solution of white LED lighting is to package the blue light chip and yellow phosphor, and combine the yellow light generated by the chip to excite the phosphor and the blue light emitted by the chip to form a composite white light. However, the existing yellow phosphor lacks red light in its emission spectrum, making it difficult to prepare white LED lamp beads with high color rendering and warm color temperature, which cannot meet the requirements of high-quality modern lighting.

[0003] Current, Ca(Sr,Ba) 2 Si 5 N 8 :Eu, CaAlSiN 3 Nitride red phosphors such as :Eu have been widely studied and applied to the packaging of white LEDs with high color rendering and warm color temperature. However, the preparation of these nitride red phos...

Claims

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