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Hybrid perovskite luminescent material and preparation method and application thereof

A luminescent material, perovskite technology, applied in luminescent materials, amino compound preparation, chemical instruments and methods, etc., can solve the problems of poor stability, short solution synthesis and storage time, etc., to improve stability, reduce fluorescence quenching, The effect of enhancing the luminous performance

Active Publication Date: 2021-06-29
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most organic-inorganic hybrid materials are faced with the problems of poor stability and short storage time for solution synthesis.

Method used

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  • Hybrid perovskite luminescent material and preparation method and application thereof
  • Hybrid perovskite luminescent material and preparation method and application thereof
  • Hybrid perovskite luminescent material and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0044] According to the following stoichiometric ratio: (C 32 h 68 N) 2 PbBr 4 , respectively weigh lead bromide and tetra-n-octyl ammonium bromide, mix and grind until uniform, put the resulting mixture in a corundum crucible and put it in an oven, raise it to 70°C in an air atmosphere, and keep it warm for 3 hours. After it was naturally cooled to room temperature, it was taken out to obtain the product. figure 1 Excitation and emission spectra of the product prepared for Example 1 of the present application.

Embodiment 2

[0046] According to the following stoichiometric ratio: (C 32 h 68 N) 2 PbBr 3 Cl, respectively weigh lead bromide, lead chloride and tetra-n-octyl ammonium bromide, mix and grind until uniform, put the resulting mixture in a corundum crucible and put it in an oven, and raise it to 70°C in an air atmosphere , keep warm for 3 hours, take it out after it is naturally cooled to room temperature, and obtain the product. figure 2 Excitation and emission spectra of the product prepared for Example 2 of the present application.

Embodiment 3

[0048] According to the following stoichiometric ratio: (C 32 h 68 N) 2 PbBr 2 Cl2 , Weigh lead bromide, lead chloride and tetra-n-octyl ammonium bromide respectively, mix thoroughly and grind until uniform, put the resulting mixture in a corundum crucible and put it in an oven, and raise it to 70°C under air atmosphere, Keep it warm for 3 hours, take it out after it cools naturally to room temperature, and obtain the product. image 3 Excitation and emission spectra of the product prepared for Example 3 of the present application.

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Abstract

The invention belongs to the technical field of perovskite materials. The invention provides a hybrid perovskite luminescent material and a preparation method thereof. By regulating and controlling the proportions of organic matters and a lead-containing compound, the brightness of the material is gradually enhanced along with the replacement of halogen elements, and the material has the characteristic of adjustable emission, can generate a large Stokes broadband under the excitation of ultraviolet light, and can emit green light; and the organic matters are cheap, easily available and non-toxic, and play a good role in protecting the hybrid perovskite luminescent material, so the luminescent property of the material is enhanced, and the stability is greatly improved. The hybrid perovskite luminescent material disclosed by the invention has great application prospects in biological imaging and light-emitting solar condensers. The preparation method is simple in technological process and easy to operate, synthesis conditions are easy to realize and controllable, and the preparation method is suitable for large-scale production.

Description

technical field [0001] The application belongs to the technical field of perovskite materials, and in particular relates to a hybrid perovskite luminescent material and its preparation method and application. Background technique [0002] Organic-inorganic hybrid perovskite is a new type of molecular composite material, which is formed by the self-assembly of organic molecules and inorganic molecules. Its structure is based on inorganic parts, and organic cations and inorganic layers are connected to each other by hydrogen bonds. , finally forming a long-range ordered single-crystal sample in which organic and inorganic components are alternately stacked. This hybrid material combines the advantages of organic and inorganic components with high structural tunability and rich physical properties. On the one hand, inorganic frameworks provide opportunities for semiconductor behavior and wide band gaps to make materials with good optoelectronic properties and electron mobility...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C09K11/66C07C209/00C07C211/07
CPCC09K11/06C09K11/664C07C209/00C07C211/07Y02E10/549
Inventor 金亚洪苏越袁丽芳胡义华伍思键
Owner GUANGDONG UNIV OF TECH
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