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Fluorescent composite film with super-strong thermal stability as well as preparation method and application of fluorescent composite film

A composite film and stability technology, applied in the field of luminescent film and its preparation, and film, can solve the problems of brightness effect and low concentration of nanocrystals, and achieve the effect of wide color gamut and super luminous stability.

Active Publication Date: 2022-04-01
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the open pores, CsPbBr 3 Quantum dots are still prone to degradation in the face of polar solvents such as water
At the same time, due to the mesoporous SiO 2 The relatively low concentration of nanocrystals in the

Method used

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  • Fluorescent composite film with super-strong thermal stability as well as preparation method and application of fluorescent composite film
  • Fluorescent composite film with super-strong thermal stability as well as preparation method and application of fluorescent composite film
  • Fluorescent composite film with super-strong thermal stability as well as preparation method and application of fluorescent composite film

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Experimental program
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Effect test

Embodiment 1

[0038] This embodiment provides a luminescent film with super thermal stability, which is prepared through the following steps:

[0039] Hexadecyltrimethylammonium chloride, triethanolamine and deionized water were stirred at a stirring speed of 150 rpm for 1 h under the condition of an oil bath at 60 ° C to obtain a transparent precursor solution; 25% wt of cetyl The mixing ratio of trimethylammonium chloride, triethanolamine and deionized water is 24mL: 0.18g: 36mL; the cetyltrimethylammonium chloride solution of 25%wt is made of 6g cetyltrimethylchloride Prepared by dissolving ammonium chloride in 24mL deionized water;

[0040] Mix ethyl orthosilicate and cyclohexane, add it to the precursor solution, keep the temperature of the oil bath at 60°C, and keep stirring at a speed of 150 rpm for 48h; ethyl orthosilicate, cyclohexane, The mixing ratio of the precursor solution is: 1mL: 19mL: 60mL;

[0041] Collect the lower aqueous phase, centrifuge at 10,000 rpm for 10 minutes,...

Embodiment 2

[0049] This embodiment provides a luminescent film with super thermal stability, which is prepared through the following steps:

[0050] Hexadecyltrimethylammonium chloride, triethanolamine and deionized water were stirred at a stirring speed of 150 rpm for 1 h under the condition of an oil bath at 60 ° C to obtain a transparent precursor solution; 25% wt of cetyl The mixing ratio of trimethylammonium chloride, triethanolamine and deionized water is 20mL: 0.2g: 40mL; the cetyltrimethylammonium chloride solution of 25%wt is made of 6g cetyltrimethylchloride Prepared by dissolving ammonium chloride in 24mL deionized water;

[0051] Mix ethyl orthosilicate and cyclohexane, add it to the precursor solution, keep the temperature of the oil bath at 60°C, and keep stirring at a speed of 150 rpm for 48h; ethyl orthosilicate, cyclohexane, The mixing ratio of the precursor solution is: 1mL: 9mL: 50mL;

[0052] Collect the lower aqueous phase, centrifuge at 10,000 rpm for 10 minutes, w...

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Abstract

The invention provides a fluorescent composite film with super-strong stability as well as a preparation method and application of the fluorescent composite film. The preparation method comprises the following steps: preparing uniformly dispersed mesoporous silica spheres; uniformly dispersed mesoporous silica spheres are mixed with a perovskite raw material, and a fluorescent composite material is obtained through high-temperature calcination treatment; the fluorescent composite material is sieved and then mixed with polydimethylsiloxane, and the fluorescent composite film with super-strong stability is obtained. The fluorescent composite film prepared by the preparation method can be used in various intelligent display devices and lighting devices, and has a wide color gamut and super-strong luminescence stability.

Description

technical field [0001] The invention relates to a thin film, in particular to a luminous thin film with super thermal stability and a preparation method thereof, belonging to the technical field of polymer films. Background technique [0002] All-inorganic lead halide perovskite nanocrystals (LHP) have high photoluminescence quantum yield (PLQY) and high color purity, making them ideal for various optoelectronic applications such as light-emitting diodes, displays, radiation detectors, and solar concentrators. The application field has broad application prospects. To solve this problem, different strategies have been devised in recent years to protect all-inorganic lead halide perovskite nanocrystals, the most promising strategy is to encapsulate them in polymers, inorganic matrices (including metal oxides, such as di Silica, Titanium Dioxide, A1 2 o 3 and metal halides) or hybrid compounds (eg, metal-organic frameworks). [0003] Due to their stable chemical properties,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L83/04C08K9/12C08K7/26C08K3/16
CPCC08K7/26C08L83/04C08K9/12C08K3/16C08J5/18
Inventor 陈煜李沁熠
Owner SUZHOU UNIV