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Inorganic-organic hybrid superlattice material with photochromic property as well as preparation and application of inorganic-organic hybrid superlattice material

A technology of organic hybridization and inorganic materials, applied in photovoltaic power generation, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of poor reproducibility and low yield of superlattice, and achieve the effect of simple and easy preparation

Active Publication Date: 2020-05-15
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, because superlattice materials may have properties that other two-dimensional materials do not have, the current methods of synthesizing superlattice materials are mainly layer-by-layer exfoliation and recombination, electrochemical methods, chemical vapor deposition methods, etc. The yield of superlattice is generally not high, and the reproducibility is relatively poor

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  • Inorganic-organic hybrid superlattice material with photochromic property as well as preparation and application of inorganic-organic hybrid superlattice material
  • Inorganic-organic hybrid superlattice material with photochromic property as well as preparation and application of inorganic-organic hybrid superlattice material
  • Inorganic-organic hybrid superlattice material with photochromic property as well as preparation and application of inorganic-organic hybrid superlattice material

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[0045] The preparation method of the present invention will be further described in detail in conjunction with specific examples below. It should be understood that the following examples are only for illustrating and explaining the present invention, and should not be construed as limiting the protection scope of the present invention. All technologies realized based on the above contents of the present invention are covered within the scope of protection intended by the present invention.

[0046] The experimental methods used in the following examples are conventional methods unless otherwise specified; the reagents and materials used in the following examples can be obtained from commercial sources unless otherwise specified.

Embodiment 1

[0048] 0.020g PbI 2 and 0.0033g EtDAB were dissolved in 1mLDMF (N,N'-dimethylformamide) to obtain a light yellow clear solution, and 10mL acetonitrile and 30mL chlorobenzene were added to the above clear solution as an antisolvent to obtain a yellow precipitate. The reaction mixture was irradiated under an incandescent lamp, and about 0.021 g of a dark green product was obtained, which was recorded as EtDAB·4PbI 2 , where 4 represents EtDAB and PbI 2 The molar ratio is 1:4.

[0049] figure 1 Schematic diagram of the structure of the superlattice material prepared in Example 1. It includes EtDAB layer and PbI 2 layer, and the EtDAB layer with PbI 2 The layers are stacked alternately.

[0050] figure 2 For the transmission electron microscope figure of the superlattice material prepared by lead iodide and embodiment 1, from figure 2 The structure of the superlattice material is further confirmed in , wherein the thickness of the EtDAB layer is about The PbI 2 The...

Embodiment 2

[0053] Select the relatively large dark green sample sheet prepared in Example 1 (referred to as a synthetic sample), and under the protection of the mask, plate gold on both ends of the sheet, and use silver glue to lead electrodes on the gold. Put the electrode in the Lake Shore CRX-VF sample chamber to evacuate, and use KEITHLEY4200-SCS to test the voltage VS current curve at different temperatures to obtain the conductivity of the synthesized sample.

[0054] Then heat the sample prepared in the above Example 1 to 100°C for 2 hours to obtain a yellow sample, which is recorded as a heat-discolored sample; test the voltage VS current curve of the heat-discolored sample at different temperatures to obtain the heat-discolored sample conductivity.

[0055] The photoconductivity of the sample prepared in Example 1 above and its thermally discolored sample at different wavelengths was tested. Using the above-mentioned electrode preparation method, Xe lamp and laser are used as l...

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Abstract

The invention discloses an inorganic-organic hybrid superlattice material with photochromic performance as well as a preparation method and application of the inorganic-organic hybrid superlattice material. The inorganic-organic hybrid superlattice material is green and has a very strong free radical signal when not being heated, after being heated, turns yellow due to the quenching of free radicals, and returns to an unheated state after being soaked in an ethanol solution and then subjected to illumination treatment. When the material is not heated, the conductivity of the material is in themagnitude of 10 <-4 > S cm <-1 >, and the conductivity of a heated and faded sample is reduced by nearly 5 magnitudes. The material is different from a traditional inorganic-organic hybrid material when not being heated. The inorganic part and the organic part of the material are both neutral, and the stability of the structure is still kept even if the material is soaked in water. The preparation method utilizes a light-induced synthesis technology, uses light as the energy for opening a superlattice layer, is simple to operate during the preparation process, and is high in yield.

Description

technical field [0001] The invention belongs to the technical field of inorganic-organic hybrid superlattice materials, and specifically relates to an inorganic-organic hybrid superlattice material with photochromic performance and its preparation and application. Background technique [0002] Inorganic-organic hybrid materials are the assembly of inorganic components and organic components at the molecular level. After careful design and structural regulation, not only can the "hybrid advantage" effect of giving full play to the respective performance advantages of inorganic materials and organic materials be achieved, but also the organic Components can synergize with inorganic components through chemical bonds, making hybrid materials present novel functions that single components do not have. Such materials have important application value in optoelectronic devices, solar cells, catalysis, ion exchange, and fast ion conductors. Therefore, the preparation of molecular-ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/30H01L51/46H01L51/54
CPCH10K85/00Y02E10/549
Inventor 王观娥徐刚王明盛
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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