A micron-scale up-conversion luminescent material and its preparation method

A luminescent material, micron-scale technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of limited luminous intensity, poor dispersion, low yield, etc., and achieve low equipment requirements, regular particle morphology, and high output. Effect
CN108913140BActive Publication Date: 2021-07-13WUHAN INSTITUTE OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN INSTITUTE OF TECHNOLOGY
Publication Date
2021-07-13

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Abstract

The invention discloses a novel micron-scale up-conversion luminescent material, which is a compound with the following chemical formula: NaYF 4 : Yb, Ln, has the advantages of regular particle shape, uniform particle size, and good dispersibility; the present invention also discloses a novel preparation method for preparing micron-scale up-conversion luminescent materials, using impinging flow-precipitation method, the process involved The process is simple, the energy consumption is small, and the product yield is high, the particle size is small and uniformly distributed, and the luminous intensity is good, which can effectively solve the problems of low yield, complex process flow and poor dispersion of up-conversion luminescent materials in the prior art. The method solves the problems that current up-conversion luminescent materials are difficult to mass-produce, and is suitable for popularization and application.
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Description

technical field

[0001] The invention belongs to the technical field of luminescent materials, and in particular relates to a micron-scale rare earth element co-doped sodium tetrafluoroyttrium up-conversion luminescent material excited by infrared light and a preparation method thereof. Background technique

[0002] Up-conversion luminescence refers to the phenomenon of converting two or more low-energy photons into one high-energy photon. It generally refers to the conversion of infrared light into visible light. Its luminescence mechanism is based on two-photon or multi-photon processes. Due to the The small size effect, surface effect, and quantum size effect make them exhibit properties that conventional materials do not have in terms of light, magnetism, and electricity, and can observe certain luminous and optical properties that cannot be seen in individual materials. Rare-earth nano-upconversion luminescent materials have good application prospects in many aspects, es...

Claims

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