Method for preparing flexible luminescent gel by inducing perovskite crystallization through acrylic acid

A technology of acrylic acid and perovskite, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of complicated perovskite nanocrystal process and process limitations, and achieve the effects of high repeatability, simple process and environmental protection of solvents.

Active Publication Date: 2022-04-12
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to overcome the shortcomings of the above-mentioned prior art, the object of the present invention is to provide a method for acrylic acid-induced perovskite crystallization to prepare flexible luminescent gels, so as to solve the complicated process in the preparation process of perovskite nanocrystals and the application in subsequent devices. Technical issues in process limitations

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  • Method for preparing flexible luminescent gel by inducing perovskite crystallization through acrylic acid
  • Method for preparing flexible luminescent gel by inducing perovskite crystallization through acrylic acid

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Embodiment 1

[0034] A kind of method that acrylic acid induces perovskite crystallization to prepare flexible light-emitting gel, comprises the following steps:

[0035] Step 1: Mix 93.5mg of methylammonium bromide (MABr) and 306.5mg of lead bromide (PbBr 2 ) was dissolved in 1ml methylammonium acetic acid (MAAc) solvent, heated to 60° C. and stirred for 15 hours to obtain a perovskite precursor solution;

[0036] 1.5g of hydroxyethyl acrylate (HEA), 0.1g of diphenyl-(2,4,6-trimethylbenzoyl)phosphine (TPO) and 0.1g of N,N'-methylenebisacrylamide (BIS) mixed to obtain a photocurable solution;

[0037] Mix the perovskite precursor solution and the photocuring solution according to the volume ratio of 1:2, and stir evenly to obtain a mixed solution;

[0038] Step 2: The mixed solution is injected into a custom shaped Teflon mold. Take a rectangular mold groove as an example, with a length of 2cm, a width of 1cm, and a depth of 1mm. Take 200μl of the mixed solution and spread it evenly. Pl...

Embodiment 2

[0041] A kind of method that acrylic acid induces perovskite crystallization to prepare flexible light-emitting gel, comprises the following steps:

[0042] Step 1: Mix 37mg methylammonium bromide (MABr) and 122mg lead bromide (PbBr 2 ) was dissolved in 0.5ml methylammonium acetic acid (MAAc) solvent, heated to 40°C and stirred for 24 hours to obtain a perovskite precursor solution;

[0043] 3 g of hydroxyethyl acrylate (HEA), 0.2 g of diphenyl-(2,4,6-trimethylbenzoyl) phosphine (TPO) and 0.2 g of N, N'-methylenebisacrylamide (BIS ) after mixing to obtain a photocurable solution;

[0044] Mix the perovskite precursor solution and the photocuring solution according to the volume ratio of 2:3, and stir evenly to obtain a mixed solution;

[0045] Step 2: The mixed solution is injected into a custom shaped Teflon mold. Take a rectangular mold groove as an example, with a length of 2cm, a width of 1cm, and a depth of 1mm. Take 200μl of the mixed solution and spread it evenly. P...

Embodiment 3

[0048] A kind of method that acrylic acid induces perovskite crystallization to prepare flexible light-emitting gel, comprises the following steps:

[0049] Step 1: Mix 69mg of methylammonium bromide (MABr) and 226mg of lead bromide (PbBr 2 ) was dissolved in 0.5ml methylammonium acetic acid (MAAc) solvent, heated to 75°C and stirred for 10h to obtain a perovskite precursor solution;

[0050] 1.2g of hydroxyethyl acrylate (HEA), 0.08g of diphenyl-(2,4,6-trimethylbenzoyl)phosphine (TPO) and 0.08g of N,N'-methylenebisacrylamide (BIS) mixed to obtain a photocurable solution;

[0051] Mix the perovskite precursor solution and the photocuring solution according to a volume ratio of 1:3, and stir evenly to obtain a mixed solution;

[0052] Step 2: The mixed solution is injected into a custom shaped Teflon mold. Take a rectangular mold groove as an example, with a length of 2cm, a width of 1cm, and a depth of 1mm. Take 200μl of the mixed solution and spread it evenly. Place it in...

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Abstract

The invention mainly relates to a method for preparing flexible luminescent gel by inducing perovskite crystallization through acrylic acid, belongs to the technical field of perovskite nanocrystal preparation, and solves the problems of complicated process in the perovskite nanocrystal preparation process and process limitation in subsequent device application. According to the invention, the perovskite crystal grains with uniform size can be rapidly prepared, the compounding with a flexible substrate material can be realized, and finally the formable perovskite flexible luminescent gel can be obtained. The implementation process of the invention mainly comprises three aspects: preparing a mixed solution of a perovskite precursor solution and a photocuring solution; carrying out photocuring molding on the composite gel; and inducing the MAPbBr3 perovskite to crystallize rapidly by using acrylic acid.

Description

technical field [0001] The invention belongs to the technical field of perovskite nanocrystal preparation, and in particular relates to a method for acrylic acid-induced perovskite crystallization to prepare flexible luminescent gel. Background technique [0002] Due to the excellent optical properties such as bandgap tunability, long carrier lifetime, and high photoluminescence quantum yield, metal halide perovskites have broad development prospects in optoelectronic research fields such as solar cells, transistors, and X-ray detectors. . Compared with thin film-based bulk materials, perovskite (MAPbBr 3 ) nanocrystals have stronger photoemission intensity, and their quantum size effect shows a wider range of light absorption and emission spectra. Traditional nanocrystalline materials are synthesized by ligand-assisted reprecipitation or thermal injection. The preparation process requires an oxygen-free, moisture-free, high-temperature environment, which requires complex ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/06C08K5/00C08F220/20
CPCY02E10/549
Inventor 宋霖王豆蓉陈永华
Owner NORTHWESTERN POLYTECHNICAL UNIV
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