High-performance narrowband fluorescent powder and preparation method thereof
A fluorescent powder, high-performance technology, applied in chemical instruments and methods, luminescent materials, electrical components, etc., can solve the problems of low external quantum efficiency and instability of red fluorescent powder, achieve low cost, improve moisture resistance, and excellent performance Effect
Active Publication Date: 2019-02-01
SUN YAT SEN UNIV
1 Cites 4 Cited by
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Abstract
The invention relates to high-performance narrowband fluorescent powder and a preparation method thereof. The preparation method comprises: S1, dissolving hexafluoromanganate in an HF solution, addinga silicon-containing compound and a cesium-containing compound under stirring to obtain a mixture; S2, carrying out a co-precipitation reaction at a temperature of -40 to -10 DEGC to obtain a precipitate, carrying out centrifugation, washing, and drying to obtain a Cs2SiF6:Mn<4+> fluorescent powder initial product; and S3, adding the Cs2SiF6:Mn<4+> fluorescent powder initial product into an acidsolution, adding a reducing solution under stirring, stirring, carrying out centrifugation, washing, and drying to obtain the high-performance narrowband fluorescent powder. According to the present invention, the preparation method has advantages of low cost, simplicity, easy operation and excellent performance, and is suitable for large-scale industrial production; and the prepared high-performance narrowband fluorescent powder has advantages of high quantum efficiency and good moisture resistance.
Application Domain
Luminescent compositionsSemiconductor devices
Technology Topic
NarrowbandPrecipitation +6
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PUM
Property | Measurement | Unit |
Particle size | 5.0 ~ 20.0 | µm |
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