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Halide perovskite material with symbiotic structure and preparation method and application thereof

A technology of halide perovskite and lead acetate trihydrate, which is applied in organic chemistry methods, organic chemistry, and the preparation of amino compounds from amines, etc., to achieve the effect of low cost and excellent physical and chemical properties

Active Publication Date: 2022-01-04
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such structures have not been reported in halide perovskites

Method used

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  • Halide perovskite material with symbiotic structure and preparation method and application thereof
  • Halide perovskite material with symbiotic structure and preparation method and application thereof
  • Halide perovskite material with symbiotic structure and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0026] Halide Perovskite Materials with Intergrowth Structure (Chloropropylamine) 4 CaPb 3 Br 11 preparation of

[0027] (Chlorpromaline) 4 CaPb 3 Br 11 It can be prepared by solution method: at room temperature, dissolve lead acetate trihydrate (1mmol, 0.38g), cesium carbonate (1mmol, 0.17g), 3-chloropropylamine hydrochloride (3mmol, 0.39g) in 15mL of hydrogen bromide In the acid, the solution can be cooled to below room temperature to precipitate (chlorpropylamine) 4 CaPb 3 Br 11 microcrystals.

Embodiment 2

[0029] Halide Perovskite Materials with Intergrowth Structure (Chloropropylamine) 4 CaPb 3 Br 11 preparation of

[0030] (Chlorpromaline) 4 CaPb 3 Br 11 It can be prepared by solid-phase method: at room temperature, add lead bromide, cesium bromide, and 3-chloropropylamine hydrochloride into a ball mill according to the stoichiometric ratio, and ball mill for 20 minutes to obtain (chloropropylamine) 4 CaPb 3 Br 11 of powder.

[0031] The (chlorpromamine) of embodiment 1 and embodiment 2 4 CaPb 3 Br 11 The packing diagram of the crystal structure is as follows figure 1 , 2 shown.

[0032] Such as figure 1 , 2 As shown, the halide perovskite material with symbiotic structure of the present invention includes a plurality of single-layer halide perovskite units and double-layer halide perovskite units arranged alternately along a certain crystallographic axis, so The above-mentioned halide perovskite units and double-layer halide perovskite units all extend along t...

Embodiment 3

[0035] Halide perovskite materials with symbiotic structure (bromopropylamine) 4 CaPb 3 Br 11 preparation of

[0036] (bromopropylamine) 4 CaPb 3 Br 11 It can be prepared by solution method: add lead acetate trihydrate (2mmol), cesium carbonate (1mmol), 3-bromopropylamine hydrobromide (3.5mmol) into 20mL hydrobromic acid, heat and stir until a clear solution is obtained, and dissolve the solution Slow cooling to room temperature can precipitate (bromopropylamine) 4 CaPb 3 Br 11 of crystals.

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Abstract

The invention relates to a halide perovskite material with a symbiotic structure and a preparation method and application thereof. The molecular formula of the halide perovskite material with a symbiotic structure is (X propylamine) 4CsPb3Br11, wherein X is Cl or Br. The halide perovskite material with a symbiotic structure is prepared, and the material has excellent physical and chemical properties, such as semiconductor characteristics, ferroelectricity and piezoelectricity. According to the preparation method disclosed by the invention, the material can be prepared by a solution method and a solid-phase synthesis method, and the preparation method is simple and easy to implement and low in cost. The material has potential application value in the fields of photoelectricity, nonlinear optics, ferroelectricity, piezoelectricity and the like.

Description

technical field [0001] The invention belongs to the field of functional materials, and specifically relates to a halide perovskite material with a symbiotic structure, a preparation method and an application thereof. Background technique [0002] In recent years, halide perovskites have attracted extensive attention of researchers due to their excellent physical and chemical properties, and have broad application prospects in the fields of lasers, light-emitting diodes, solar cells, and ferroelectric devices. By selecting appropriate organic amine cation templates, the dimensions of the inorganic framework can be tuned, thereby tuning its performance. Among them, two-dimensional halide perovskites have been extensively studied due to their structural tunability, compatibility, and environmental stability. The thickness of the inorganic layer of 2D perovskite can be controlled by simple chemical synthesis, so as to realize the regulation of performance. [0003] Bi layered ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/15C07C209/68H01L51/46
CPCC07C211/15C07B2200/13H10K85/60
Inventor 刘希涛李霄琪邬发发罗军华
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI