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Organic self-supporting single crystal film and preparation method and application thereof

A self-supporting, single crystal technology, used in semiconductor/solid-state device manufacturing, photovoltaic power generation, electrical components, etc., can solve the problems of small size, film structure and performance damage, and achieve short production cycle, low cost and low energy consumption. Effect

Active Publication Date: 2018-11-02
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, whether it is a gas phase method or a liquid phase method, in the process of transferring the film, the structure and properties of the film are often destroyed.
In addition, although the preparation of two-dimensional flaky single crystals has been common, the size is too small

Method used

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  • Organic self-supporting single crystal film and preparation method and application thereof
  • Organic self-supporting single crystal film and preparation method and application thereof
  • Organic self-supporting single crystal film and preparation method and application thereof

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preparation example Construction

[0048] An aspect of the embodiments of the present invention provides a method for preparing an organic self-supporting single crystal film, which includes:

[0049]Provide a "sandwich" structure consisting of an organic semiconductor solution and two ionic liquids, the first ionic liquid is immiscible with the organic semiconductor solution, the second ionic liquid is slightly soluble in the organic semiconductor solution, and the density of the first ionic liquid is greater than The density of the organic semiconductor solution and the density of the second ionic liquid are less than the density of the organic semiconductor solution;

[0050] The solvent in the organic semiconductor solution and the second ionic liquid are slowly dissolved, and the solvent in the organic semiconductor solution penetrates the second ionic liquid to volatilize, so that the organic semiconductor material slowly self-assembles between the two ionic liquids to form an organic self-supporting sing...

Embodiment 1

[0101] The raw materials for the preparation of the organic self-supporting single crystal film in this embodiment are: 9,10-benzylethynyl anthracene (BPEA) is used as the organic semiconductor material, the first solvent is dichloromethane, and the second solvent is a mixture of distilled water and methanol , the ratio of distilled water to methanol is 1:1; the first ionic liquid is 1-ethyl-3-methylimidazolium tetrafluoroborate, and the second ionic liquid is 1-ethyl-3-methylimidazolium trifluoroborate Fluoroborate.

[0102] The preparation method of the organic self-supporting single crystal film of this embodiment comprises the following steps:

[0103] Step 1: Adding a certain amount of 1-ethyl-3-methylimidazolium tetrafluoroborate into a beaker as a liquid substrate for organic single crystal self-assembly.

[0104] Step 2: Dissolving 9,10-diphenylethynylanthracene powder in dichloromethane to form a mixture with a 9,10-diphenylethynylanthracene concentration of 2 mg / mL....

Embodiment 2

[0112] The raw materials for the preparation of the organic self-supporting single crystal film in this embodiment are: zinc octaethylporphyrin is used as the organic semiconductor material, the first solvent is chlorobenzene, the second solvent is a mixture of distilled water and methanol, and the ratio of distilled water to methanol is 1:1; the first ionic liquid is 1-ethyl-3-methylimidazolium tetrafluoroborate, and the second ionic liquid is 1-butyl-3-methylimidazolium acetate.

[0113] The preparation method of the organic self-supporting single crystal film of this embodiment comprises the following steps:

[0114] Step 1: Adding a certain amount of 1-ethyl-3-methylimidazolium tetrafluoroborate into a beaker as a liquid substrate for the self-assembly of an organic self-supporting single crystal film.

[0115] Step 2: dissolving the zinc octaethylporphyrin powder in chlorobenzene to form a mixture with a zinc octaethylporphyrin concentration of 1 mg / mL.

[0116] Step 3: ...

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Abstract

The invention discloses an organic self-supporting single crystal film and a preparation method and application thereof. The organic self-supporting single crystal film is composed of large two-dimensional flaky organic semiconductor single crystals. The preparation method comprises the steps that a sandwich structure formed by an organic semiconductor solution and two ion liquids is provided, wherein the first ion liquid does not mix with the organic semiconductor solution, the second ion liquid slightly mixes with the organic semiconductor solution, the density of the first ion liquid is higher than that of the organic semiconductor solution, and the density of the second ion liquid is lower than that of the organic semiconductor solution; and a solvent in the organic semiconductor solution is slowly dissolved with the second ion liquid and penetrates through the second ion liquid to volatize, so that the organic semiconductor material is slowly self-assembled between the two ion liquids to form the organic self-supporting single crystal film. The organic self-supporting single crystal film has the advantages of solubilized preparation, large-size two-dimensional single crystals,high flexibility and the like, and the preparation method is easy to operate.

Description

technical field [0001] The invention relates to a self-supporting film, in particular to a large-size two-dimensional sheet single-crystal organic self-supporting film, its preparation method and application, and belongs to the technical field of organic photoelectric materials. Background technique [0002] Organic semiconductors have attracted extensive attention in recent years due to their abundant material sources and unique material properties. First of all, because organic semiconductor materials have a certain solubility in special organic solvents, they can be prepared into films by solution methods, thereby reducing costs and realizing large-scale preparations. In addition, the good flexibility and light transmittance of organic semiconductor materials make them have broad application prospects in the field of foldable, light-weight and other flexible electronics. [0003] The method of preparing semiconductor thin film is divided into gas phase method and liquid ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/00H10K99/00
CPCH10K71/12H10K77/111Y02E10/549
Inventor 潘革波李佳佳
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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