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Organic-inorganic hybrid perovskite and preparation method and application thereof

A perovskite material and inorganic technology, applied in the field of perovskite material preparation, can solve the problems of lack of mechanical stability and thermal stability, photoelectric function needs to be improved, etc., to achieve easy photoelectric functionality, good semiconductor performance, and preparation method simple effect

Active Publication Date: 2020-06-30
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the perovskite produced by it has high purity and high fluorescence rate, it still lacks mechanical stability and thermal stability, and the photoelectric function needs to be improved.

Method used

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  • Organic-inorganic hybrid perovskite and preparation method and application thereof
  • Organic-inorganic hybrid perovskite and preparation method and application thereof
  • Organic-inorganic hybrid perovskite and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This example discloses an implementation of an organic-inorganic perovskite, specifically shown in the following reaction formula:

[0042]

[0043] The specific operation is: dissolve 0.436 g of antimony trioxide solid in 5 mL of acetonitrile at room temperature, stir, and dropwise add concentrated hydrochloric acid with a mass fraction of 36% with a dropper until the solution is clear to obtain a colorless and clear solution I;

[0044] Dissolve 0.246 g of 3-hydroxypyrrolidine hydrochloride in 5 mL of acetonitrile at room temperature to obtain a colorless and clear solution II;

[0045] Add the solution II into the solution I, continue to stir and react for half an hour, filter, put the obtained solution in an oven at 60°C for 48 hours, and finally obtain the following: figure 1 The colorless rod-shaped crystal shown is an organic-inorganic hybrid perovskite material, as shown in Formula 1.

[0046] figure 2 It is the dielectric diagram of the perovskite materia...

Embodiment 2

[0052] This example discloses an implementation of an organic-inorganic perovskite, specifically shown in the following reaction formula:

[0053]

[0054] The specific operation is to dissolve 0.457 g of cadmium chloride solid in 5 mL of methanol at room temperature, stir, and dropwise add concentrated hydrochloric acid with a mass fraction of 38% with a dropper to obtain a colorless and clear solution I;

[0055] Dissolve 0.246 g of 3-hydroxypyrrolidine hydrochloride in 5 mL of methanol at room temperature to obtain a colorless and clear solution II;

[0056] Add the solution II into the solution I, continue to stir and react for half an hour, filter, put the obtained solution in an oven at 60°C for 24 hours, and finally obtain the following: Figure 7 The colorless blocky crystal shown is the organic-inorganic hybrid perovskite.

[0057] Figure 8 It is the dielectric diagram of the perovskite material described in this embodiment. It can be seen from the figure that t...

Embodiment 3

[0063] This example discloses an implementation of an organic-inorganic perovskite, specifically shown in the following reaction formula:

[0064]

[0065] The specific operation is to dissolve 1.107 g of lead bromide solid in 5 mL of methanol at room temperature, stir, and dropwise add hydrobromic acid with a mass fraction of 47% with a dropper to obtain a yellow clear solution I;

[0066] Dissolve 0.246 g of 3-hydroxypyrrolidine in 5 mL of methanol at room temperature to obtain a colorless and clear solution II;

[0067] Add the solution II to the solution I, continue to stir and react for half an hour, filter, put the obtained solution in an oven at 60°C for 36 hours, and finally obtain massive crystals, which are organic-inorganic hybrid perovskites as described in formula 3.

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Abstract

The invention relates to the technical field of perovskite material preparation, in particular to organic-inorganic hybrid perovskite and a preparation method and application thereof. The organic-inorganic hybrid perovskite material is smooth in surface, uniform in diameter distribution, and good in semiconductor performance and nonlinear optical performance, can be used for preparing nonlinear optical devices and energy storage materials, and is applied to the dielectric switch field. According the preparation method, metal halides or metal oxides are utilized; a composite crystal material is formed by self-assembly of organic small molecules and inorganic molecules by using 3-hydroxypyrrolidine as the raw material, such that the composite crystal material has the mechanical stability and the thermal stability of the inorganic components, and further has the workability and the photoelectric function of the organic components, and the preparation method has characteristics of simpleness and low cost, and can be used for large-scale preparation.

Description

technical field [0001] The invention relates to the technical field of perovskite material preparation, in particular to an organic-inorganic hybrid perovskite and its preparation method and application. Background technique [0002] Organic-inorganic hybrid halide perovskites, such as MAPbI 3 , has become a new type of material, which belongs to molecular ferroelectric materials, and is widely used in the field of optoelectronics. Perovskite materials have the advantages of low price, light weight, flexibility, wear resistance, environmental protection, etc., with direct bandgap and adjustable bandgap width, high absorption coefficient and absorption band covering ultraviolet to near-infrared band, high carrier mobility and The transport performance of electrons and holes is relatively balanced, and it has broad application prospects in data storage, piezoelectric sensors, nonlinear optical devices and other fields; as a molecular ferroelectric material, it also has unique...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D207/12H01L51/46
CPCC07D207/12H10K85/654H10K30/10Y02E10/549
Inventor 谭育慧宋宁杜鹏康张钰松韩定冲
Owner JIANGXI UNIV OF SCI & TECH
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