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A Method for Controlled Growth of Two-dimensional Organic Single Crystal Films Using Adhesive Substrates and Surfactants

A surfactant and substrate technology, applied in chemical instruments and methods, single crystal growth, single crystal growth, etc., can solve problems such as damage, easy dispersion, and large fluidity

Active Publication Date: 2021-03-30
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the fluidity of water is relatively large, and even a small vibration will destroy the formed two-dimensional organic single crystal film, and the solution with low surface tension is easy to disperse on the water surface, and it is difficult to grow two-dimensional single crystal film.
In order to prepare high-quality two-dimensional organic single crystal films, there is still a lack of methods that can universally grow large-area two-dimensional organic single crystal films

Method used

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  • A Method for Controlled Growth of Two-dimensional Organic Single Crystal Films Using Adhesive Substrates and Surfactants
  • A Method for Controlled Growth of Two-dimensional Organic Single Crystal Films Using Adhesive Substrates and Surfactants
  • A Method for Controlled Growth of Two-dimensional Organic Single Crystal Films Using Adhesive Substrates and Surfactants

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Experimental program
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Effect test

Embodiment 13

[0105] A method for regulating and growing a two-dimensional organic single crystal film by using an adhesive substrate and a surfactant, comprising the following steps:

[0106] Place the viscous liquid substrate in a weighing bottle of 70mm × 35mm, drop 1 drop of mixed solution on the viscous liquid substrate, the mixed solution is a mixture of surfactant, C8-BTBT (organic reagent) and toluene, and keep the temperature constant Place in a humid box at 15°C for 10 hours to volatilize toluene to obtain a two-dimensional organic single crystal film with a thickness of 16.18nm, and transfer the two-dimensional organic single crystal film to a silicon wafer, wherein the surfactant is perfluorozinc The viscous liquid base is glycerol, and the ratio of the mass fraction of the surfactant, the mass fraction of the organic reagent, and the volume fraction of toluene is 0.025:0.5:1. Figure 6 c is an optical microscope image of the two-dimensional organic single crystal film obtained ...

Embodiment 14

[0108] A method for regulating and growing a two-dimensional organic single crystal film by using an adhesive substrate and a surfactant, comprising the following steps:

[0109] Place the viscous liquid substrate in a weighing bottle of 70mm × 35mm, drop 1 drop of mixed solution on the viscous liquid substrate, the mixed solution is a mixture of surfactant, DFH-4T (organic reagent) and toluene, at constant temperature Place in a humid box at 15°C for 10 hours to volatilize the toluene to obtain a two-dimensional organic single crystal film with a thickness of 20.82nm, and transfer the two-dimensional organic single crystal film to a silicon wafer, wherein the surfactant is perfluorozinc Sodium acid, the viscous liquid base is glycerol, the ratio of the mass fraction of the surfactant, the mass fraction of the organic reagent and the volume fraction of toluene is 0.15:0.5:1. Figure 6d is an optical microscope image of the two-dimensional organic single crystal film obtained in...

Embodiment 15

[0111] A method for regulating and growing a two-dimensional organic single crystal film by using an adhesive substrate and a surfactant, comprising the following steps:

[0112] Place the viscous liquid substrate in a weighing bottle of 70 mm × 35 mm, drop 1 drop of mixed solution on the viscous liquid substrate, the mixed solution is a mixture of surfactant, perylene (organic reagent) and toluene, in a constant temperature and humidity box placed at 22°C for 10 hours to volatilize toluene to obtain a two-dimensional organic single crystal film with a thickness of 14.30 nm, and transfer the two-dimensional organic single crystal film to a silicon wafer, wherein the surfactant is sodium perfluorozincate , the viscous liquid base is glycerol, and the ratio of the mass fraction of the surfactant, the mass fraction of the organic reagent, and the volume fraction of toluene is 0.16:0.5:1. Figure 6 b is an optical microscope image of the two-dimensional organic single crystal film...

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Abstract

The invention discloses a method for regulating the growth of a two-dimensional organic single crystal film by utilizing a viscous substrate and a surfactant. According to the method, a mixed solutionis added on a viscous liquid substrate in a dropwise manner, wherein the mixed solution is a mixture of a surfactant, an organic reagent and toluene; placing is performed for 8-10 hours at a temperature of 10-25 DEG C to volatilize the toluene so as to obtain the two-dimensional organic single crystal film, wherein a ratio of the mass part of the surfactant to the mass part of the organic reagent to the volume part of the toluene is (0.025-0.16):(0.18-0.5):1, the surfactant is sodium perfluorozincate, the organic reagent is C6-DPA, perylene, C8-BTBT or DFH-4T, the viscous liquid substrate isglycerol or a glycerol aqueous solution, and a ratio V of the volume of the glycerol in the glycerol aqueous solution to the volume of the glycerol aqueous solution is greater than or equal to 70% and less than 100%. According to the method disclosed by the invention, the viscous liquid is used as the substrate to provide space confinement effect, and the surfactant is added to increase the spreading area, so that the large-area two-dimensional single crystal film is prepared.

Description

technical field [0001] The invention belongs to the technical field of organic semiconductors, and specifically relates to a method for regulating and growing a two-dimensional organic single crystal film by using an adhesive substrate and a surfactant. Background technique [0002] The two-dimensional organic single crystal film combines the advantages of easy preparation of two-dimensional materials, flexibility, designable structure of organic materials, easy dissolution, less charge defects, no grain boundaries, and high device performance of single crystal films. Based on these advantages Two-dimensional organic single crystal films have been very widely studied. Therefore, the preparation of high-quality two-dimensional organic single crystal films has become the focus of attention at this stage. Recently, Xu Chunhui used the "solution epitaxy method" and Wang Qingqing used the "space-confined two-dimensional growth method" to grow two-dimensional organic single cryst...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C30B29/54C30B29/64C30B7/06
CPCC30B7/06C30B29/54C30B29/64
Inventor 李荣金姚佳荣胡文平
Owner TIANJIN UNIV