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Manufacturing method of metal grid type transparent electrode

A technology of transparent electrodes and metal meshes, which is applied to equipment for manufacturing conductive/semiconductive layers, cable/conductor manufacturing, circuits, etc. Effect

Inactive Publication Date: 2020-03-10
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But photolithography is expensive

Method used

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  • Manufacturing method of metal grid type transparent electrode
  • Manufacturing method of metal grid type transparent electrode
  • Manufacturing method of metal grid type transparent electrode

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Dissolve 0.5 g of PVB with a weight average molecular weight of 90,000 and 0.5 g of PVP with a weight average molecular weight of 1.3 million in 20 mL of absolute ethanol, and obtain a uniform solution by magnetic stirring and ultrasonic dispersion. The above solution was spin-coated onto the surface of the copper film (the copper film was attached to polyethylene terephthalate, PET), at a rotational speed of 3000 rpm for 30 s to obtain a phase-separated film. The PVP was selectively removed with deionized water to obtain a PVB network pattern. The unshielded copper is etched away with a ferric chloride solution to obtain a transparent copper grid electrode.

Embodiment 2

[0022] Dissolve 0.3 g of PVB with a weight average molecular weight of 90,000 and 0.5 g of PS with a weight average molecular weight of 200,000 in 20 mL of ethyl acetate, and obtain a uniform solution by magnetic stirring and ultrasonic dispersion. The above solution was spin-coated onto the surface of the copper film (the copper film was attached to the PET) at a rotational speed of 1000 rpm for 90 s to obtain a phase-separated film. Selective removal of PS with toluene yielded a PVB network pattern. The unshielded copper is etched away with an ammonium persulfate solution to obtain a copper grid transparent electrode.

Embodiment 3

[0024] 0.5 g of PAN with a weight average molecular weight of 200,000 and 0.3 g of PMMA with a weight average molecular weight of 100,000 were dissolved in 20 mL of chloroform, and a uniform solution was obtained by magnetic stirring and ultrasonic dispersion. The above solution was spin-coated onto the surface of the copper film (the copper film was attached to the PET) at a rotation speed of 2000 rpm for 60 s to obtain a phase-separated film. Selective removal of PAN with DMF yielded PMMA mesh patterns. The unshielded copper is etched away with a hydrogen peroxide solution to obtain a copper grid transparent electrode.

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Abstract

The invention discloses a manufacturing method of a metal grid transparent electrode. The method comprises the following steps of dissolving two polymers in a first solvent according to a certain weight ratio to prepare a solution with a concentration of 1mg / mL-500mg / mL, and coating the solution on a surface of a metal film to prepare a film in a spin coating mode; using a second solvent to selectively remove one polymer so as to form a grid pattern; and removing a unshielded metal surface by using an etching method, and removing a spin-coating film to obtain a metal grid transparent electrode. The obtained metal grid transparent electrode has micron-sized line width. Transmittance is 60%-90%, and a sheet resistance is 1ohm / sq-1000 ohm / sq.

Description

technical field [0001] The invention relates to the technical field of electrode preparation methods, in particular to a preparation method of a metal grid type transparent electrode. Background technique [0002] Transparent electrodes are an indispensable part of modern optoelectronic devices, and have been widely used in solar cells, light-emitting diodes, touch screens, smart glasses and other fields. The commercial transparent electrode material is indium tin oxide (ITO) compound, which has the problems of brittleness and high cost. Transparent electrode materials that replace ITO include graphene, carbon nanotubes, conductive polymers, ultra-thin metal films, and metal grid transparent electrodes. [0003] Single-layer graphene has good electrical conductivity. However, it is difficult to prepare single-layer, large-area, high-quality graphene. Carbon nanotubes have high contact resistance when preparing transparent electrodes, resulting in poor electrical conductiv...

Claims

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Application Information

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IPC IPC(8): H01B13/00
CPCH01B13/00H01B13/0026
Inventor 钟卫余建平艾宇轩龚宇霞
Owner NANCHANG HANGKONG UNIVERSITY
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