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A method of rapidly transferring black phosphorus film by using polydimethylsiloxane

A technology of polydimethylsiloxane and black phosphorus, which is applied in the field of rapid transfer of black phosphorus films, can solve the problems of easy damage, low transfer efficiency, and easy pollution of black phosphorus films, and achieves low cost and good integrity , The transfer process is simple and efficient

Active Publication Date: 2018-02-02
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Technical problem: The purpose of this invention is to provide a method for quickly transferring black phosphorus film using polydimethylsiloxane, aiming to solve the problems of easy contamination, easy damage and low transfer efficiency of the above-mentioned black phosphorus film transfer process

Method used

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  • A method of rapidly transferring black phosphorus film by using polydimethylsiloxane

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Experimental program
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Effect test

Embodiment 1

[0030] In the first step, 50 mg of black phosphorus powder prepared by electrochemical assisted mechanical exfoliation was taken and uniformly dispersed in 100 ml of absolute ethanol.

[0031] In the second step, 1 ml of the above-mentioned dispersion liquid is ultrasonically dispersed in 100 ml of deionized water.

[0032] The 3rd step, use the suction filter bottle that dispersed suspension is suction filtered, use filter membrane to be acetate fiber, and obtain black phosphorus thin film (such as figure 1 I).

[0033] In the fourth step, the 100 micron thick PDMS film is tightly attached to the filter membrane with the black phosphorus side, and gently pressed, the filter membrane is in a wet state in this step (such as figure 1 II).

[0034] The fifth step, after 5 minutes, take off the filter membrane (such as figure 1 II), that is, the black phosphorus film transferred to PDMS (such as figure 1 IV).

[0035] It should be noted that the illustrations provided in the ...

Embodiment 2

[0037] The preparation method is basically the same as in Example 1, except that the black phosphorus powder is prepared by redox method.

Embodiment 3

[0039] The preparation method is basically the same as in Example 1, except that the black phosphorus powder is prepared by mechanical exfoliation.

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Abstract

The invention discloses a method using polydimethyl siloxane to fast transfer a black-phosphorus film. The method includes: preparing black-phosphorus suspension dispersion liquid; ultrasonically dispersing a certain amount of black-phosphorus suspension dispersion liquid into deionized water; using a suction filtration flask to perform suction filtration of the dispersion liquid so as to obtain a film; using a cured and formed transparent PDMS film to attach the filter film with black phosphorus; removing the filter film after several minutes to obtain the black-phosphorus film transferred to PDMS. The method has the advantages that the method is simple to operate, low in cost, environmentally friendly and widely applicable to the manufacturing of transparent electrodes and flexible devices, the black-phosphorus film is complete during transfer, the whole transfer process is short, and the black-phosphorus film can be transferred efficiently and stably.

Description

technical field [0001] The invention relates to the field of semiconductor materials, in particular to a method for quickly transferring a black phosphorus film. Background technique [0002] The biggest advantage of black phosphorus over graphene is that it has an energy gap, which makes it easier to detect light; and its energy gap can be adjusted by the number of layers of black phosphorus stacked on the silicon substrate, so that it can absorb visible light range and wavelengths in the infrared range for communications. In addition, because black phosphorus is a direct gap semiconductor, it can also convert electronic signals into light. [0003] For the application of black phosphorus in electronic devices and sensors, it is usually necessary to transfer black phosphorus thin films to insulating substrates, especially with the rise of flexible electronic devices, black phosphorus, as an excellent electrode material, often needs to be transferred to flexible substrates ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/02
CPCC01B25/02
Inventor 孙立涛史智慧万树苏适毕恒昌尹奎波
Owner SOUTHEAST UNIV
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