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Graphene transfer method

A transfer method and graphene technology, applied in the field of graphene transfer, can solve the problems of etching copper, complex method and process, unfavorable graphene application, etc., and achieve the effect of high degree of consistency and small graphene defects

Active Publication Date: 2015-01-07
宁波柔碳电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of method of coating organic glue, etching the substrate with etching solution after drying, and removing the organic glue is complicated, and copper needs to be etched, and some need to dissolve the support.
In the process of corroding copper and dissolving glue, defects and impurities will be generated in the transferred graphene, which is not conducive to the application of transferred graphene.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] 1) Put the copper foil substrate deposited with graphene into deionized water, and heat it for 4 hours at a temperature of 40°C (at this time, the solubility of oxygen in water is 6.4 mg / L); take the sample out of the water, and dry it ;

[0065] 2) Mix the AB glue evenly according to the instructions for use, take the AB mixed liquid and drop it on the PET film; paste the graphene side of the sample obtained in step 1) on the glue surface of the PET film and flatten it, and place it in a vacuum drying oven Dry at 40°C for 24 hours;

[0066] 3) The copper foil in the sample obtained in step 3) is directly torn off by hand, and the graphene is transferred to the PET film.

[0067] In the present invention, the graphene transferred from the copper foil to the PET film is macroscopically intact and without damage.

[0068] The present invention carries out Raman (Raman) spectrum detection to the graphene that transfer obtains, and can find out in the Raman spectrogram th...

Embodiment 2

[0070] 1) Put the copper foil substrate deposited with graphene into deionized water, and heat it for 4 hours at a temperature of 40°C (at this time, the solubility of oxygen in water is 6.4 mg / L); take the sample out of the water, and dry it ;

[0071] 2) Mix the AB glue evenly according to the corresponding proportion, take an appropriate amount of mixed liquid and drop it on the PET film; paste the graphene side of the sample obtained in step 1) on the glue surface of the PET film to flatten it, and place it in a vacuum drying oven Dry at 40°C for 24 hours;

[0072] 3) Use the sample in 2) as one electrode and graphite as the other electrode, apply a voltage of 0.5V, immerse in hydrochloric acid with a mass percentage of 1% hydrochloric acid for 5h, the copper foil is separated from the PET bonded with graphene, and the graphite ene transfer to PET film.

[0073] In the present invention, the graphene transferred from the copper foil to the PET film is macroscopically int...

Embodiment 3

[0076] 1) Put the copper foil substrate deposited with graphene into deionized water, and heat it for 4 hours at a temperature of 40°C (at this time, the solubility of oxygen in water is 6.4 mg / L); take the sample out of the water, and dry it ;

[0077] 2) Apply a voltage of 20KV to the PET to charge it with static electricity;

[0078] 3) The graphene surface on the substrate is pasted on the above-mentioned electrostatically charged PET, and flattened by rubber rollers;

[0079] 4) The copper foil in the sample obtained in step 3) is directly torn off by hand, and the graphene is transferred to the PET film.

[0080] In the present invention, the graphene transferred from the copper foil to the PET film is macroscopically intact and undamaged;

[0081] The present invention carries out Raman (Raman) spectrum detection with the graphene that transfer obtains, and can find out in the Raman spectrum figure that obtains, and the bee intensity of D peak at 1350 places is very l...

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Abstract

The invention provides a graphene transfer method. The method comprises the following steps: 1, placing a substrate on which graphene is deposited in a medium containing oxidizing substances to be processed; 2, adhering one side, on which the graphene is deposited, of the substrate processed in the step 1 to a target matrix; 3, stripping off the substrate in a sample obtained in the step 2 so as to complete transfer of the graphene. According to the method provided by the invention, firstly, the substrate on which the graphene is deposited is placed in the oxidant to be processed, so that the interface bonding force between the graphene and the substrate is reduced, so that the graphene is easy to fall out of the surface of the substrate in the later period of stripping off the substrate, integrity of the graphene cannot be damaged, the graphene transferred to the target matrix is not damaged and the graphene has small defects.

Description

technical field [0001] The invention relates to the technical field of graphene preparation, in particular to a transfer method of graphene. Background technique [0002] Graphene is a new type of carbonaceous thin film material with a single layer of carbon atoms arranged in a hexagonal network structure. It can be applied in nanoelectronic devices, supercomputers, solar cells, lithium-ion batteries, optoelectronic sensors, gene sequencing, noise control, etc. Compared with ITO, the advantage of graphene is that it can be used as a flexible film, will not yellow due to light interference, and is not limited by natural resources. Therefore, graphene film is expected to be used as a substitute material for ITO, which is commonly used at present, for touch panels, flexible liquid crystal panels, solar cells, and organic EL lighting. [0003] At present, the methods for preparing graphene films include mechanical exfoliation, epitaxial growth, and chemical vapor deposition (C...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 庄华杰汪伟刘兆平陈黎
Owner 宁波柔碳电子科技有限公司
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