A method of transferring graphene with adhesive film as a medium

Active Publication Date: 2019-01-11
WUXI GRAPHENE FILM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the first method, because the metal substrate cannot be well bonded to the target substrate, problems such as wrinkles, unevenness, and damage in the finished film are caused; the second method transfers single-layer graphene with high resistance and more transfer. Layer graphene, the production process is complicated, the production efficiency is significantly reduced, which seriously affects the application of graphene; the third method can greatly reduce the resistance, but the operation is more troublesome, and the resin coating technology requires higher requirements
Moreover, the square resistance of the single-layer graphene film obtained by these transfer methods is uncontrollable.

Method used

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  • A method of transferring graphene with adhesive film as a medium

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of method that transfers graphene with adhesive film as the medium, see figure 1 , including the following steps:

[0029] 1) After graphene is grown on the copper foil by conventional vapor deposition, the copper foil with graphene grown on it is expanded to obtain copper foil / graphene;

[0030] 2) The graphene side in the copper foil / graphene is bonded to the glued side of the PET film by rolling to form a PET film / graphene / copper foil structure, wherein the PET film is 100 μm PET plus 5μm acrylic adhesive, the peeling force of the film is 8g / 25mm;

[0031] 3) Etch the PET film / graphene / copper foil in a mixed solution of hydrochloric acid and hydrogen peroxide, take it out every 3 minutes and clean the surface of the copper foil with deionized water and ethanol until the copper foil is completely removed, and finally use deionized Wash with water and dry with hot air to obtain PET film / graphene.

[0032] 4) Use the method of rapid rolling within 30S at 100°C...

Embodiment 2

[0035] A kind of method that transfers graphene with adhesive film as the medium, see figure 1 , including the following steps:

[0036] 1) After graphene is grown on the copper foil by conventional vapor deposition, the copper foil with graphene grown on it is expanded to obtain copper foil / graphene;

[0037]2) The graphene side in the copper foil / graphene is bonded to the glued side of the PET film by rolling to form a PET film / graphene / copper foil structure, wherein the PET film is 100 μm PET plus 10μm acrylic adhesive, the peeling force of the film is 10g / 25mm;

[0038] 3) Etch the PET film / graphene / copper foil in a mixed solution of hydrochloric acid and hydrogen peroxide, take it out every 3 minutes and clean the surface of the copper foil with deionized water and ethanol until the copper foil is completely removed, and finally use deionized Wash with water and dry with hot air to obtain PET film / graphene.

[0039] 4) The side of the graphene in the PET film / graphene ...

Embodiment 3

[0042] A kind of method that transfers graphene with adhesive film as the medium, see figure 1 , including the following steps:

[0043] 1) After graphene is grown on the copper foil by conventional vapor deposition, the copper foil with graphene grown on it is expanded to obtain copper foil / graphene;

[0044] 2) The graphene side in the copper foil / graphene is bonded to the glued side of the PET film by rolling to form a PET film / graphene / copper foil structure, wherein the PET film is 100 μm PET plus 10μm silica gel, the peeling force of the film is 20g / 25mm;

[0045] 3) Etch the PET film / graphene / copper foil in a mixed solution of hydrochloric acid and hydrogen peroxide, take it out every 3 minutes and clean the surface of the copper foil with deionized water and ethanol until the copper foil is completely removed, and finally use deionized Wash with water and dry with hot air to obtain PET film / graphene.

[0046] 4) Use the method of rapid rolling within 30S at 100°C to ...

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Abstract

The invention discloses a method for graphene transfer with an adhesive film as the medium. The method includes the steps that firstly, the adhesive film is attached to the graphene side of a metal substrate where graphene grows to form an adhesive film / graphene / metal substrate; secondly, the metal substrate is removed to obtain an adhesive film / graphene structure; thirdly, the graphene side of film / graphene is attached to a target substrate; fourthly, the adhesive film is removed to obtain a graphene / target substrate structure. By means of the adhesive film, the graphene is transferred to the target substrate, and single-layer graphene controllable in sheet resistance can be obtained by adjusting the thickness, stripping force and other parameters of the adhesive film.

Description

technical field [0001] The invention relates to a method for preparing a graphene film by a film transfer method, in particular to an improved method for preparing graphene by a vapor deposition method, and belongs to the field of graphene preparation methods. Background technique [0002] Graphene is a single-atom-layer two-dimensional crystal in which carbon atoms are closely packed in a hexagonal structure. In addition to its excellent optical, thermal, and mechanical properties, graphene also has excellent electrical properties, and has huge applications in high-frequency electronic devices. value. Since graphene is a two-dimensional atomic crystal film, graphene must be transferred to a three-dimensional target substrate in order for graphene to be truly used. Therefore, graphene transfer technology is an indispensable process. At present, the common methods of transferring graphene are: one is to directly attach the metal substrate with the graphene film to the target...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C01B32/184
CPCC01B2204/02
Inventor王小蓓王炜谭化兵
OwnerWUXI GRAPHENE FILM