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Silver nanowire mesh-reduced graphene oxide combined electrode and preparation method thereof

A graphene composite, silver nanowire technology, applied in circuits, electrical components, electrical solid devices, etc., can solve the problems of difficult operation, high cost, and easy transfer of graphene

Active Publication Date: 2018-09-11
JILIN JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current coating methods mainly include the following two types: one is to paste and transfer the copper-based graphene film to the silver nanowire grid, which is costly and graphene is not easy to transfer; the other is to use high temperature Or reduce graphene oxide with hydrazine hydrate, and then drop-coat the reduced graphene oxide on the silver nanowire grid. This method is too complicated and not easy to operate.

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  • Silver nanowire mesh-reduced graphene oxide combined electrode and preparation method thereof
  • Silver nanowire mesh-reduced graphene oxide combined electrode and preparation method thereof
  • Silver nanowire mesh-reduced graphene oxide combined electrode and preparation method thereof

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preparation example Construction

[0023] The invention provides a method for preparing a silver nanowire grid-reduced graphene oxide composite electrode, comprising the following steps:

[0024] Depositing silver nanowires on the surface of the substrate to form a grid of silver nanowires;

[0025] A graphene oxide aqueous solution is coated on the surface of the silver nanowire grid, and a silver nanowire grid-graphene oxide composite film is formed on the surface of the substrate;

[0026] The silver nanowire grid-graphene oxide composite film is irradiated with ultraviolet rays to obtain a silver nanowire grid-reduced graphene oxide composite electrode.

[0027] The invention deposits silver nanowires on the substrate surface to form silver nanowire grids. In the present invention, the substrate is preferably a flexible substrate, more preferably a polyethylene terephthalate (PET) substrate or a polyimide (PI) substrate; There is no special requirement for the thickness of the substrate, and a substrate w...

Embodiment 1

[0042] (1) Drop-coat silver nanowire ethanol solution on a flexible PET substrate with an area of ​​1 × 1 cm (wherein the concentration of silver nanowire ethanol solution is 0.1 mg / mL, and the single drop-coating amount is 10 μL, and drop-coating 10 times, The average diameter of the silver nanowires is 90nm, and the length is 10 μm). After the drop coating is completed, the ethanol solvent is naturally volatilized to dry, and the silver nanowire grids randomly arranged on the substrate surface are obtained. The silver nanowire grids on the substrate The deposition amount is 100mg / m 2 ;

[0043] (2) 30 μL of graphene oxide aqueous solution (concentration: 0.1 mg / mL) was drip-coated on the surface of the silver nanowire grid. After the drip coating was completed, the surface moisture was evaporated to dryness to form silver nanowires and graphene oxide Composite film;

[0044] (3) Use a UV mercury lamp to irradiate the silver nanowire grid-graphene oxide composite film with ...

Embodiment 2

[0051] (1) Drop-coat silver nanowire ethanol solution on a flexible PI substrate with an area of ​​1 × 1 cm (the concentration of silver nanowire ethanol solution is 0.1 mg / mL, and the single drop-coating volume is 6 μL, and drop-coating 10 times, The average diameter of the silver nanowires is 80nm, and the length is 10 μm). After the drop coating is completed, the ethanol solvent is naturally volatilized to dry, and a randomly arranged silver nanowire grid is obtained on the substrate surface. The deposition of the silver nanowire grid on the substrate The amount is 60mg / m 2 ;

[0052] (2) 20 μL of graphene oxide aqueous solution (concentration: 0.1 mg / mL) was drip-coated on the surface of the silver nanowire grid. After the drip coating was completed, the surface moisture was evaporated to dryness to form silver nanowires and graphene oxide on the surface Composite film;

[0053] (3) Use a UV mercury lamp to irradiate the silver nanowire grid-graphene oxide composite film...

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Abstract

The invention provides a preparation method of a silver nanowire mesh-reduced graphene oxide combined electrode, comprising the following steps: depositing silver nanowire on the surface of a substrate to obtain a silver nanowire mesh; coating the upper surface of the silver nanowire mesh with a graphene oxide aqueous solution to form a silver nanowire mesh-reduced graphene oxide composite film onthe surface of the substrate; and carrying out ultraviolet irradiation on the silver nanowire mesh-reduced graphene oxide composite film to obtain the silver nanowire mesh-reduced graphene oxide combined electrode. According to the preparation method, plasma resonance effect on the surface of silver nanowires is assisted with ultraviolet irradiation for reduction of graphene oxide so as to obtainthe silver nanowire mesh-reduced graphene oxide combined electrode. The preparation method has simple steps, is low-cost and is easy for operation; and the combined electrode has excellent air stability and high conductivity.

Description

technical field [0001] The invention relates to the technical field of nano-optoelectronic materials, in particular to a silver nanowire grid-reduced graphene oxide composite electrode and a preparation method thereof. Background technique [0002] Transparent conductive film has ideal transparency and high conductivity, and is an excellent electrode material, which can be applied to many optoelectronic devices. Today, the most widely used transparent conductive film is indium tin oxide film (ITO), but the scarce indium element contained in the ITO film limits its further application. In recent years, silver nanowire grid structure is regarded as one of the most promising materials to replace indium tin oxide (ITO). Silver nanowires have good conductivity and ductility, which meet the requirements of increasingly flexible devices, and the preparation process is simple. [0003] The pure silver nanowire grid has the problem that the silver surface is easily oxidized, and th...

Claims

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Application Information

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IPC IPC(8): C08J7/06C08J7/12H01L51/52C08L67/02C08L79/08
CPCC08J7/06C08J7/123C08J2379/08C08J2367/02H10K50/816
Inventor 闫兴振周路初学峰王欢杨帆王超边虹宇史恺李旭迟耀丹杨小天
Owner JILIN JIANZHU UNIVERSITY
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