Organic-inorganic composite photoluminescence film, and preparation method and use thereof

Abstract

The invention provides an organic-inorganic composite photoluminescence film, and a preparation method and use thereof, and belongs to the technical field of optical function composite films. The organic-inorganic composite photoluminescence film comprises a polyvinylidene fluoride film and rare-earth-element-doped perovskite structure oxide particles; the rare-earth-element-doped perovskite structure oxide particles are uniformly dispersed in the polyvinylidene fluoride film; the volume ratio between the rare-earth-element-doped perovskite structure oxide particles and the polyvinylidene fluoride film is 1: (3 to 12). The film has the advantages of high flexibility, high transparency, good dielectric property, high stability, and the like, and the emitting color changes along with the excitation wavelengths. The preparation method of the organic-inorganic composite photoluminescence film provided by the invention has the advantages that the operation process is simple, the experimental process is easy to control, the production cost is low and the film forming efficiency is high, and is suitable for large-scale production. The organic-inorganic composite photoluminescence film provided by the invention can be used in the fields of code transmission, illumination or display.

Description

technical field [0001] The invention relates to the technical field of photofunctional composite films, in particular to an organic-inorganic composite photoluminescence film and its preparation method and application. Background technique [0002] Photoluminescent composite films have the advantages of traditional composite film materials, and the introduction of luminescent materials endows the films with good optical properties, which has become a research hotspot in the field of functional materials. The photoluminescent composite film introduces luminescent materials on the surface or inside of the film, such as some semiconductor luminescent materials, organic small molecule fluorescent materials and rare earth complexes, etc., and then the photoluminescent composite film will have good optical properties. [0003] The film host matrix of traditional photoluminescent composite films often uses organic polymer materials such as organically modified silicate and polyacry...

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Problems solved by technology

[0003] The film host matrix of traditional photoluminescent composite films often uses organic polymer materials such as organically modified silicate and polyacrylonitrile, but the film host matrix made of these organic polymers generally has the disadvantages of low flexibility and low transparency.

Semiconductor luminescent materials are widely used, but generally have problems such as low luminous efficiency and poor stability; organic small molecules as electroluminescent materials overcome the shortcomings of low luminous efficiency and poor stability of inorganic semiconductor luminescent materials, but due to Organic small molecule materials are easy to crystallize in the process of electroluminescence, and the stability of the body is poor, and the actual application is relatively small; rare earth complexes have the advantages of high luminous intensity and good monochromaticity, but there are photostability and The problem of poor thermal stability

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