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How copper-based graphene is transferred to silicon oxide wafers

How copper-based graphene is transferred to silicon oxide wafers

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2022-07-22
  • Views:396

(Summary description)Our company is an earlier graphene production enterprise in China, and its products have been sold well at home and abroad. The company can provide single-layer and few-layer (less than 10 layers) graphene films on different substrates, with high integrity, high single-layer coverage, good electrical conductivity, and a maximum mobility of ~6000cm2/vs. At present, common substrates include copper substrates, silicon substrates, silicon oxide wafer substrates, PET substrates, sapphire substrates, nickel foam, self-service transfer, bubble pick-up, quartz substrates, and so on.

How copper-based graphene is transferred to silicon oxide wafers

(Summary description)Our company is an earlier graphene production enterprise in China, and its products have been sold well at home and abroad. The company can provide single-layer and few-layer (less than 10 layers) graphene films on different substrates, with high integrity, high single-layer coverage, good electrical conductivity, and a maximum mobility of ~6000cm2/vs. At present, common substrates include copper substrates, silicon substrates, silicon oxide wafer substrates, PET substrates, sapphire substrates, nickel foam, self-service transfer, bubble pick-up, quartz substrates, and so on.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2022-07-22
  • Views:396
Information

Our company is an earlier graphene production enterprise in China, and its products have been sold well at home and abroad. The company can provide single-layer and few-layer (less than 10 layers) graphene films on different substrates, with high integrity, high single-layer coverage, good electrical conductivity, and a maximum mobility of ~6000cm2/vs. At present, common substrates include copper substrates, silicon substrates, silicon oxide wafer substrates, PET substrates, sapphire substrates, nickel foam, self-service transfer, bubble pick-up, quartz substrates, and so on.

So, how is the copper-based graphene transferred to the silicon oxide wafer? Let's learn more about it below!

(1) Take out the copper foil, cut it, and take a sample;

(2) After spin-coating a layer of PMMA on the surface of the sample, it is fully dried at room temperature;

(3) Cut the copper foil that has been spin-coated with PMMA, take the middle part, and place it in the etching solution for etching;

(4) During the etching process, the back of the copper foil should be rinsed with deionized water several times;

(5) After the copper foil is completely etched, use a glass sheet to transfer the graphene film into water and clean it;

(6) After cleaning, transfer the graphene film to the silicon oxide wafer and dry;

(7) After the sample is cooled to room temperature, place it in an acetone solution to remove PMMA;

(8) Take out the sample, rinse the surface of the film with ethanol and deionized water, and dry it in the air.

Can graphene on silicon oxide be re-released into deionized water?

After graphene is transferred to any substrate (excluding suspended self-transfer substrates), it can be released again before drying, but after sufficient drying, the graphene and the substrate are fully bonded and cannot be released anymore.

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