Organic-inorganic hybrid fluorine titanium potassium red-light fluorescent powder and preparation method thereof

A technology of red fluorescent powder and hybridization, applied in chemical instruments and methods, luminescent materials, electrical components, etc., can solve the problems of poor moisture resistance, decreased luminous intensity, no luminescence, etc., and achieve high luminescence with low requirements for reaction conditions Thermal stability, the effect of simple preparation method
CN114181700AActive Publication Date: 2022-03-15广西经正涂料有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
广西经正涂料有限公司
Publication Date
2022-03-15

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Abstract

The invention belongs to the technical field of preparation of fluorescent powder, and particularly relates to organic-inorganic hybrid fluorine titanium potassium red-light fluorescent powder, the general formula of which is K2TiF6: xMn < 4 + >, ytetaH < + >, tetaH < + > represents that triethylene tetramine is subjected to organic-inorganic hybridization, and triethylene tetramine exists in a protonation form after hybridization; x is the mole fraction of Mn < 4 + > doping, y is the mole fraction of triethylene tetramine doping, x is larger than or equal to 0.01 and smaller than or equal to 0.12, and y is larger than or equal to 0.0 and smaller than or equal to 0.15. The invention also provides a preparation method of the organic-inorganic hybrid potassium titanium fluoride red-light fluorescent powder, which comprises the following steps: (1) reacting triethylene tetramine with an H2TiF6 solution and a K2CO3 solution, and drying to obtain K2TiF6: ytetaH < + >; and (2) reacting KF. 2H2O with an HF solution, a K2MnF6 solution and K2TiF6: ytetaH < + >, sealing, standing, carrying out suction filtration, washing and drying to obtain the K2TiF6: xMn < 4 + >, ytetaH < + >. The obtained red-light fluorescent powder has the advantages of high luminescence, high intensity, water resistance, thermal stability and the like.
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Description

technical field

[0001] The invention belongs to the technical field of fluorescent powder preparation, and in particular relates to an organic-inorganic hybrid fluorine-titanium-potassium red-light fluorescent powder. Background technique

[0002] Diodes (white LEDs) have the advantages of high luminous efficiency, energy saving, long life, low energy consumption, and environmental protection. Therefore, LEDs are regarded as a new generation of solid-state light-emitting devices. At present, the most mature and commercialized white LEDs are based on blue chip and yellow phosphor YAG:Ce 3+ Realized by the combination of yellow light phosphor YAG:Ce 3+ Absorption of the blue light emitted by the blue chip produces yellow fluorescence, which is combined with the chip's blue light to obtain white light. Because this kind of white light lacks red light components, it has disadvantages such as high color temperature and low color purity, so it is difficult to apply to general l...

Claims

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