Method for preparing perovskite quantum dot-polymer porous composite material

A porous composite material and composite material technology are applied in the field of preparing high-brightness and high-stability perovskite quantum dot-polymer porous composite materials, which can solve the problem of large specific surface area, high surface energy and low stability of perovskite quantum dots. and other problems, to achieve the effects of easy control of preparation parameters, simple process and high luminous brightness

Active Publication Date: 2022-02-18
NANCHANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, the formation energy of perovskite materials is low, and perovskite quantum dots have a large specific surface area and high surface energy, and the surface ligands are in dynamic equilibrium, so there are a large number of surface defects, which make them highly sensitive to the external environment. show low stability, which seriously restricts its practical application

Method used

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  • Method for preparing perovskite quantum dot-polymer porous composite material
  • Method for preparing perovskite quantum dot-polymer porous composite material
  • Method for preparing perovskite quantum dot-polymer porous composite material

Examples

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Embodiment 1

[0028] Dissolve lead methacrylate in methyl methacrylate (MMA) at a concentration of 6×10 -5 mol / mL solution 1mL, add 0.03 g of 2-2 azobisisobutyronitrile (AIBN) at the same time, mix well and filter out large particles with a filter head, add the solution dropwise to cube sugar and vacuum process to make the cube The air in the sugar is discharged, and the air in the sugar cube is exhausted by repeating it several times, and the solution fills the gaps in the sugar cube. Wrap the solution-filled sugar cubes with aluminum foil to avoid loss due to volatilization of the solution. Placed in an oven at 65°C for 12 h. Immerse the cross-linked sugar cube in a large amount of distilled water to dissolve the sugar in it to obtain a polymer, and then dry the polymer after the sugar cube is dissolved to obtain thermally cross-linked polymethyl methacrylate copolymer lead methacrylate porous composites. Afterwards, cesium bromide was dissolved in dimethyl sulfoxide solvent, and the ...

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Abstract

The invention discloses a method for preparing a perovskite quantum dot-polymer porous composite material with high brightness and high stability. The method comprises the following steps: S1, preparing a lead-containing precursor solution; s2, preparing a solution of halogenated methylamine, halogenated formamidine and halogenated cesium; s3, preparing a lead-containing porous polymer material; s4, preparing a porous perovskite quantum dot-polymer composite material. According to the method provided by the invention, the porous perovskite quantum dot-polymer composite material with high luminance and good stability can be obtained.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a method for preparing a high-brightness and high-stability perovskite quantum dot-polymer porous composite material. Background technique [0002] Perovskite quantum dots are a very promising material. Due to their excellent optical properties such as narrow emission spectrum, wide tunable fluorescence emission, high luminous efficiency and low cost, they are widely used in light-emitting diodes. , lasers and other high-performance optoelectronic devices have attracted much attention. However, the formation energy of perovskite materials is low, and perovskite quantum dots have a large specific surface area and high surface energy, and the surface ligands are in dynamic equilibrium, so there are a large number of surface defects, which make them highly sensitive to the external environment. It shows low stability, which seriously restricts its practical applicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/26C08J9/36C08L33/12C08K3/16C08F220/14C08F220/06C09K11/02C09K11/66B82Y20/00B82Y30/00B82Y40/00
CPCC08J9/26C08J9/36C08F220/14C09K11/025C09K11/665B82Y20/00B82Y30/00B82Y40/00C08J2333/12C08J2201/0422C08K3/16C08F220/06Y02E10/549
Inventor 李璠郭威王晓峰夏雪峰徐翼飞徐光勇李样生
Owner NANCHANG UNIV
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