Method for preparing graphene/Ag composite conductive film

A composite conductive and graphene technology, applied in the field of preparing graphene/Ag composite conductive films and transparent conductive films, can solve problems such as effective control, difficult film properties, and reduced transmittance, and achieve the effects of easy operation and simple procedures

Active Publication Date: 2012-06-27
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Graphene is a two-dimensional carbon atom crystal with a thickness of one atom, which is considered to be the basic structural unit of fullerene, carbon nanotube (CNT) and graphite Since Science reported in 2004 that the first two-dimensional independent graphite sheet could be scraped off simply by friction, a research boom similar to the appearance of carbon nanotubes has been set off in this field; As an effective way, transparent conductive graphene films have great application prospects in new electronic devices; at present, many methods have been tried to prepare graphene films, such as chemical vapor deposition process based on organic polycyclic aromatic hydrocarbons, based on monolithic The electron beam etching process of the layer, the tailoring process based on vacuum filtration film and the self

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First, mix 30mL of newly prepared graphene oxide with 40mL of nano-Ag / PDDA sol, and then ultrasonicate for 30min to obtain a graphene oxide / Ag precursor; immerse the quartz substrate in hot H 2 o 2 / H 2 SO 4 (V / V 3:7) After 40min pretreatment in the mixed solution, rinse with deionized water and blow dry with nitrogen; immerse the pretreated quartz substrate in the graphene oxide / Ag sol precursor for 1min and then dry it with 5mm Pulling at a speed of 1 / min, standing for 2min, and taking it out in a vacuum furnace under the protection of argon at 400°C for 10min; repeating this impregnation-heat treatment process 4 times to obtain a graphene oxide / Ag composite film; put the obtained composite film in a tube Graphene / silver composite film can be obtained by heat treatment in a mixed gas of hydrogen / argon (volume ratio 1:2) at 600°C in a type furnace for 2 hours. The transmittance of the obtained film at 500nm is 75%, and the sheet resistance of the film is 3.78 k □ ...

Embodiment 2

[0026] First, 30 mL of newly prepared graphene oxide and 45 mL of nano-Ag / PDDA sol were mixed and ultrasonicated for 60 minutes to obtain a graphene oxide / Ag precursor; the quartz substrate was immersed in hot H 2 o 2 / H 2 SO 4 (V / V 3:7) pretreatment in the mixed solution for 80min, rinsed with deionized water and blown dry with nitrogen; immerse the pretreated quartz substrate in the graphene oxide / Ag sol precursor for 1min and then dry it with 5mm Pulling at a speed of 1 / min, standing for 2min, and taking it out under the protection of argon in a vacuum furnace at 400°C for 10min; repeating this impregnation-heat treatment process 6 times to obtain a graphene oxide / Ag composite film; put the obtained composite film in a tube The graphene / silver composite film can be obtained by heat treatment in a mixed gas of hydrogen / argon (volume ratio 1:2) at 800°C for 2 hours in a type furnace. The transmittance of the obtained film at 500 nm is 68%, and the sheet resistance of the fi...

Embodiment 3

[0029] Firstly, mix 30mL of newly prepared graphene oxide with 30mL of nano-Ag / PDDA sol, and then sonicate for 20min to obtain the graphene oxide / Ag precursor; immerse the quartz substrate in hot H 2 o 2 / H 2 SO 4 (V / V 3:7) After 30min pretreatment in the mixed solution, rinse with deionized water and blow dry with nitrogen; immerse the pretreated quartz substrate in the graphene oxide / Ag sol precursor for 3min and then use 5mm Pulling at a speed of 1 / min, standing for 2min, and taking it out under the protection of argon in a vacuum furnace at 400°C for 10min; repeating this impregnation-heat treatment process 6 times to obtain a graphene oxide / Ag composite film; put the obtained composite film in a tube Graphene / silver composite film can be obtained by heat treatment at 400℃ in a mixed gas of hydrogen / argon (volume ratio 1:2) for 2 hours in a type furnace. The transmittance of the obtained film at 500nm is 62%, and the sheet resistance of the film is 1.56 k □ -1 .

[...

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PUM

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Abstract

The invention belongs to the technical field of inorganic functional materials, and discloses a method for preparing a graphene/Ag composite conductive film. The method provided by the invention is characterized in that a graphene oxide/Ag sol precursor is adopted; and the graphene/Ag composite conductive film which is transparent is obtained by a dip-coating method and heat treatment. The method provided by the invention has the advantages that the dip-coating method is adopted; the viscosity of the graphene oxide/Ag sol precursor is changed by control of a volume ratio of graphene oxide to Ag sol; control of film thickness, film transmittance and film conductivity is realized through control of frequency of dip-coating processes; the method provided by the invention has a simple flow and can be operated easily.

Description

technical field [0001] The invention belongs to the technical field of inorganic functional materials, and particularly refers to a method for preparing a graphene / Ag composite conductive film. The graphene oxide / silver sol is used as a precursor, and a transparent conductive film is obtained after a pulling method and heat treatment. Background technique [0002] Graphene (Graphene) is a two-dimensional carbon atom crystal with a thickness of one atom. It is considered to be the basic structural unit of fullerene, carbon nanotube (CNT) and graphite. Since Science reported in 2004 that it can simply scrape off the first Since a two-dimensional independent graphite sheet, this field has set off a research boom similar to the appearance of carbon nanotubes; graphene films are considered to be an effective way for graphene to be applied in practice, and transparent conductive graphene films are used in new electronic devices. It has great application prospects; at present, many...

Claims

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Application Information

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IPC IPC(8): C03C17/22C03C17/06
Inventor 杨娟周亚洲赵南孙洪波程晓农
Owner JIANGSU UNIV
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