Grapheme composite membrane, preparing method thereof and functions thereof

A graphene composite and graphene film technology, applied in cable/conductor manufacturing, conductive materials, conductors, etc., can solve the problems of incomplete graphene growth, brittle ITO, easy to wear, etc., to avoid defects and tiny Damage, simple and easy process, and the effect of improving stability

Inactive Publication Date: 2014-07-16
2D CARBON CHANGZHOU TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1) ITO is very brittle and brittle, prone to wear during use and cracks or breaks when bent;
[0004] 2) The preparation of ITO needs to extract scarce rare earth elements. The refining process is complicated and the equipment is expensive, resulting in low preparation efficiency and high cost of ITO, which is not conducive to the application in large-area and flexible thin-film devices;
[0006] 4) The preparation process of ITO is toxic to the human body
[0008] 1) The square resistance (also known as square resistance) of the existing graphene film is relatively high, generally 150-250Ω / □ (ie 150-250Ω / sq), which cannot meet the requirements of high-end products for square resistance;
[0009] 2) Some areas of graphene may not grow completely or have defects during the growth process.
[0010] 3) The graphene film may be slightly damaged during the mass transfer process, thus affecting the photoelectric performance of the product

Method used

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  • Grapheme composite membrane, preparing method thereof and functions thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] 1) Preparation of graphene film

[0072] After cutting the base copper foil to size, place it on the mold and put it into the deposition tube of the deposition furnace. Close the flanges at both ends of the deposition tube, evacuate to below 5pa, and check the air leakage of the equipment. Introduce argon gas into the deposition tube, after reaching normal pressure, turn off the argon gas, evacuate to 5 Pa, repeat twice, wherein the flow rate of argon gas is 2000 sccm.

[0073] Under the protection of argon, the temperature of the equipment was raised to 1000°C, wherein the argon flow rate was 1000 sccm, and the heating rate of the equipment was 10°C / min. After the temperature reaches 1000°C, feed methane and hydrogen gas into the deposition tube to deposit graphene, wherein the flow rate of methane is 20 sccm, the flow rate of hydrogen gas is 200 sccm, the deposition time is 20 min, and the graphene film is obtained after cooling.

[0074] 2) Preparation of conductiv...

Embodiment 2

[0081] 1) Preparation of graphene film

[0082] After cutting the base copper foil to size, place it on the mold and put it into the deposition tube of the deposition furnace. Close the flanges at both ends of the deposition tube, evacuate to below 5pa, and check the air leakage of the equipment. Pass the mixed gas of argon and nitrogen into the deposition tube, after reaching normal pressure, turn off the argon, evacuate to 5pa, repeat twice, wherein the flow rate of argon gas is 2000 sccm, and the flow rate of nitrogen gas is 2000 sccm.

[0083] Under the protection of argon, the temperature of the equipment was raised to 900°C, wherein the argon flow rate was 1500 sccm, and the heating rate of the equipment was 8°C / min. After the temperature reaches 900°C, feed ethylene and hydrogen gas into the deposition tube to deposit graphene, wherein the flow rate of ethylene is 10 sccm, the flow rate of hydrogen gas is 200 sccm, the deposition time is 15 min, and a graphene film is ...

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Abstract

The invention relates to a grapheme composite membrane, a preparing method thereof and functions thereof, and belongs to the field of conductive membranes. The grapheme composite membrane comprises a grapheme membrane body and a conductive enhancing membrane body, and has a good bending characteristic, flexibility, light transparency and conductivity.

Description

technical field [0001] The invention relates to a graphene composite film, its preparation method and application, and belongs to the field of conductive films. Background technique [0002] Transparent conductive film refers to a film material with high light transmittance and excellent conductivity in the visible light region. Transparent conductive films have been widely used in various optoelectronic devices, such as liquid crystal displays, light-emitting diodes, capacitive touch screens, and thin-film solar cells. Currently, indium tin oxide (ITO) is used to prepare transparent conductive films, such as transparent conductive layers in capacitive touch screens, due to its good light transmittance and electrical conductivity. By changing the ratio of indium to tin, the deposition method, the degree of oxidation, and the size of the crystal grains, the properties of the transparent conductive film can be adjusted. However, the use of ITO also has some disadvantages, su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/00H01B1/22H01B1/24H01B13/00
Inventor 金虎刘志成彭鹏周振义蔡晓岚邓科文
Owner 2D CARBON CHANGZHOU TECH INC
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