Processing method of copper foil for graphene film growth and copper foil prepared by the method
A technology of graphene film and treatment method, applied in cleaning methods and appliances, chemical instruments and methods, gaseous chemical plating, etc., can solve the problems of uneven growth of graphene film, low cleanliness and low activity, and achieve uniformity and stability Nucleation growth, improved integrity and uniformity, removal of thorough effects
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Embodiment 1
[0028] The processing method of the copper foil used for the graphene thin film growth of the present embodiment, see figure 1 , the steps include: (1) plasma pretreatment, (2) electrochemical polishing, cleaning, (3) secondary plasma treatment; the specific steps include:
[0029] (1) Plasma pretreatment: The treatment process is carried out in two steps. First, the cut copper foil blank is placed in a vacuum plasma cleaning machine, and a certain flow of oxygen is passed through to perform the first plasma decontamination treatment. The active particles in the oxygen plasma can go deep into the micro holes and depressions, completely remove the dirt on the surface of the copper foil blank through chemical reaction, and effectively improve the cleanliness of the surface of the copper foil blank; the process control process conditions are: power 400W-500W , the pressure of the cleaning working cabin is below 40Pa, the oxygen flow rate is 150sccm-200sccm, and the processing tim...
Embodiment 2
[0042] On the basis of above-mentioned embodiment 1, the present invention also provides a kind of copper foil for graphene film growth, described graphene film growth copper foil is made by the processing method of described graphene film growth copper foil, The effect of growing graphene film on this copper foil, see figure 2 to Figure 6.
[0043] Specifically, the copper foils that have undergone different treatment processes are placed in the same diffusion furnace at the same time, and the growth process is controlled to perform CVD graphene film nucleation and growth. After the obtained copper foil samples are placed on a constant temperature heating plate at 150 ° C for 5 minutes, Observed with a metallographic microscope, the results are shown in Figure 6(a) to Figure 6(d), the white matter in the figure is the graphene film grains in the nucleation and growth. It can be seen from Figure 6(a) that the untreated copper foil has a large nucleation density of the graphe...
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