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Method for transferring graphene

A graphene film and substrate technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of graphene doping, increase the surface roughness of the film, etc., achieve less transfer steps, improve Integrity and cleanliness, effect of reducing square resistance

Inactive Publication Date: 2017-08-29
国成仪器(常州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the transferred adhesive remains between the graphene and the substrate, which has a doping effect on the graphene and increases the surface roughness of the film.

Method used

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  • Method for transferring graphene

Examples

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example 1

[0021] 1. Fabrication of graphene films on initial substrates. In this embodiment, copper Cu foil is used as the substrate with a thickness of 40 microns. By vapor deposition CVD method, using methane CH 4 and hydrogen H 2 As the reactive gas, a graphene film was prepared on copper foil.

[0022] 2. Spin-coat a layer of conductive adhesive on the prepared graphene film.

[0023] 3. Then bake at 100°C for 120 seconds to fully cure the conductive adhesive.

[0024] 4. The graphene film is peeled off from the initial substrate by electrochemical method, and transferred to the target substrate to complete the transfer of the graphene film. Specifically, first put the copper foil / graphene / conductive glue into the prepared electrolyte In the process, it is connected to the negative electrode, and the positive electrode is connected to the platinum electrode for electrochemical stripping. The electrolyte used was sodium hydroxide solution with a concentration of 5 M. The electr...

example 2

[0027] 1. Fabrication of graphene films on initial substrates. In this embodiment, copper Cu foil is used as the substrate with a thickness of 40 microns. By vapor deposition CVD method, using methane CH 4 and hydrogen H 2 As the reactive gas, a graphene film was prepared on copper foil.

[0028] 2. Spin-coat a layer of conductive adhesive on the prepared graphene film.

[0029] 3. Then bake at 100°C for 120 seconds to fully cure the conductive adhesive.

[0030] 4. The graphene film is peeled off from the initial substrate by electrochemical method, and transferred to the target substrate to complete the transfer of the graphene film. Specifically, first put the copper foil / graphene / conductive glue into the prepared electrolyte In the process, it is connected to the negative electrode, and the positive electrode is connected to the platinum electrode for electrochemical stripping. The electrolyte used was sodium hydroxide solution with a concentration of 5 M. The electr...

example 3

[0033] 1. Fabrication of graphene films on initial substrates. In this embodiment, copper Cu foil is used as the substrate with a thickness of 40 microns. By vapor deposition CVD method, using methane CH 4 and hydrogen H 2 As the reactive gas, a graphene film was prepared on copper foil.

[0034] 2. Spin-coat a layer of conductive adhesive on the prepared graphene film.

[0035] 3. Then bake at 100°C for 120 seconds to fully cure the conductive adhesive.

[0036] 4. The graphene film is peeled off from the initial substrate by electrochemical method, and transferred to the target substrate to complete the transfer of the graphene film. Specifically, first put the copper foil / graphene / conductive glue into the prepared electrolyte In the process, it is connected to the negative electrode, and the positive electrode is connected to the platinum electrode for electrochemical stripping. The electrolyte used was sodium hydroxide solution with a concentration of 5 M. The electr...

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Abstract

The invention discloses a method for transferring graphene. The method comprises four steps: preparing a graphene film on an initial substrate; coating the surface of graphene with a conductive adhesive; peeling the graphene film from the initial substrate through an electrochemical method, and attaching the peeled graphene film to a target substrate; and finally cleaning the target substrate with a graphene film attached to complete graphene transfer. Through an electrochemical bubbling transferring method, a graphene film is peeled from the initial substrate. A metal corrosion method for transferring is avoided, pollution of a corrosion product to a graphene film is prevented, the production cost and time are effectively reduced, and damage and wrinkle of the graphene film are reduced. The method is simple to operate and is convenient to be used in the graphene field.

Description

technical field [0001] The invention relates to a method for transferring graphene from a growth substrate to a target substrate, and belongs to the field of film material preparation. Background technique [0002] Graphene, as an emerging The material has received worldwide attention, and the research and application of graphene are also emerging one after another. [0003] Graphene is a single-atom-layer two-dimensional crystal in which carbon atoms are closely packed in a hexagonal structure. It is the thinnest two-dimensional material in the world. Due to the excellent mechanical, electronic and thermal stability properties of graphene, its application in electronic devices, electrodes, capacitors, sensors and composite materials has attracted widespread attention and has become a current international hot research field. Since 2008, people have used chemical vapor deposition to synthesize centimeter-sized graphene films on various metal substrates (Cu, Ni, Co, Ir, Ru,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/194
Inventor 董国材张涛唐琪雯
Owner 国成仪器(常州)有限公司
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