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Hybrid organic-inorganic chiral perovskite single crystal and synthesis method thereof

A perovskite and chiral technology, applied in the field of hybrid organic-inorganic chiral perovskite single crystal and its synthesis, can solve problems such as few researches, achieve pure target product, high stability, and less environmental pollution Effect

Inactive Publication Date: 2020-03-06
NANKAI UNIV
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Problems solved by technology

At present, the third-order or higher-order nonlinear optical properties of hybrid organic-inorganic perovskite materials have been extensively studied in some optical devices, while the second-order nonlinear optical properties require the material itself to have a non-centrosymmetric structure, which is rarely studied. Research

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  • Hybrid organic-inorganic chiral perovskite single crystal and synthesis method thereof
  • Hybrid organic-inorganic chiral perovskite single crystal and synthesis method thereof
  • Hybrid organic-inorganic chiral perovskite single crystal and synthesis method thereof

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Embodiment Construction

[0031] The technical solutions of the present invention will be described in detail below through specific embodiments. The specific embodiments described are only for helping to better understand the present invention, and are not regarded as specific limitations to the present invention. The methods mentioned in the following examples are regarded as commonly used methods in the art unless otherwise specified.

[0032] The preparation process of chiral hybrid organic-inorganic lead bromide perovskite single crystal does not require high-cost reaction equipment, and the target product can be prepared in ordinary laboratories with a small amount of raw materials. The method adopted is the anti-solvent method, also known as the solvent diffusion method, wherein N,N-dimethylformamide is used as a good solvent, and toluene is used as a poor solvent. This method is widely used in single crystal preparation due to its advantages of simple operation, low cost and no pollution.

[0...

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Abstract

The invention relates to a hybrid organic-inorganic chiral perovskite single crystal and a synthesis method thereof. According to the invention, a chiral organic amine ligand is used as a raw materialto prepare a novel non-centrosymmetric hybrid organic-inorganic chiral perovskite single crystal. The preparation method comprises the following steps: dissolving a mixture of PbBr2 and chiral aminein a molar ratio of 2: 1 in HBr and N, N-dimethylformamide, stirring for 20 minutes at room temperature, gradually clarifying the solution, standing in a toluene atmosphere for several days to obtaincolorless bulk monocrystals, and drying in a drying oven to obtain the hybrid organic-inorganic chiral perovskite monocrystals. The hybrid organic-inorganic chiral perovskite single crystal synthesized by the method disclosed by the invention has relatively strong second-order nonlinear optical properties. The preparation method provided by the invention is simple and efficient, the product stability is high, the environmental pollution is small, and a foundation is laid for the development and application of the novel hybrid organic-inorganic perovskite material in the photoelectric field.

Description

technical field [0001] The invention belongs to the technical field of functional hybrid materials, and relates to a hybrid organic-inorganic chiral perovskite single crystal and a synthesis method thereof. Background technique [0002] Chirality is one of the basic characteristics of nature, which refers to the phenomenon that a real object cannot overlap its mirror image. Chiral materials are widely used in the fields of chemistry, materials science, physics and life sciences. The most important of these are used to generate circular dichroism and circularly polarized light. Circularly polarized light is the core of many electronic technologies, and the circularly polarized light generated by optical excitation has potential applications in 3D display, optical information storage and solar cells. However, until now, the content of chiral materials in nature is very limited, even extremely rare. Therefore, the design and synthesis of chiral materials are of great signifi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/54C30B7/14
CPCC30B7/14C30B29/54
Inventor 李伟郝静秦炎
Owner NANKAI UNIV
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