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A composite transparent conductive film with copper nanowire-based multilayer structure and preparation method thereof

A transparent conductive film, copper nanowire technology, applied to conductive layers on insulating carriers, nanotechnology, nanotechnology and other directions, can solve problems such as easy oxidation and corrosion, achieve low cost, good commercial application prospects, and inhibit oxidation. Effect

Active Publication Date: 2016-03-30
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silver nanowires are also half-buried in organic polymers, and partially exposed in the air, which is easily oxidized and corroded.

Method used

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  • A composite transparent conductive film with copper nanowire-based multilayer structure and preparation method thereof
  • A composite transparent conductive film with copper nanowire-based multilayer structure and preparation method thereof
  • A composite transparent conductive film with copper nanowire-based multilayer structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A method for preparing a composite transparent conductive film of copper nanowire-based multilayer structure, comprising the following steps:

[0057] (1) AZO ink was prepared by the solution method, and a 30nm thick AZO film was prepared on the substrate (the substrate in this example was a PET substrate) by the inkjet printing method, and the AZO film was prepared in an argon / hydrogen mixed atmosphere at 200°C. After heat treatment for 1 hour, the lower AZO conductive layer is obtained, wherein the AZO ink is prepared through the following steps:

[0058] (a) Weigh 11g of zinc acetate dihydrate for grinding, put it into a beaker, add 4g of glycerol at the same time, and then heat at 120°C for 15 minutes. During the heating process, add ethylene glycol drop by drop and use Stir vigorously with a magnetic stirrer, add 15 g of ethylene glycol dropwise, and finally obtain a clear solution, stop heating;

[0059] (b) When the temperature drops below 50°C, add 70g of absol...

Embodiment 2

[0071] A method for preparing a composite transparent conductive film of copper nanowire-based multilayer structure, comprising the following steps:

[0072] (1) AZO ink was prepared by the solution method, and a 300nm thick AZO film was prepared on the substrate (the substrate in this example was a PI substrate) by the inkjet printing method, and the AZO film was prepared in an argon / hydrogen mixed atmosphere at 200°C After heat treatment for 1 hour, the lower AZO conductive layer is obtained;

[0073] This is used as the lower AZO conductive layer; wherein the AZO ink is prepared through the following steps:

[0074] (a) Weigh 20g of zinc acetate dihydrate and grind it, put it into a beaker, add 9g of glycerol at the same time, heat at 130°C for 15 minutes, during the heating process, add ethylene glycol drop by drop and stir with a magnetic force Stir vigorously with the device, add 22g of ethylene glycol dropwise to obtain a clear solution, stop heating; wait for the temp...

Embodiment 3

[0086] A method for preparing a composite transparent conductive film of copper nanowire-based multilayer structure, comprising the following steps:

[0087] (1) AZO ink was prepared by the solution method, and a 150nm-thick AZO film was prepared on a flexible substrate (PI substrate in this example) by inkjet printing method, and the AZO film was prepared under an argon / hydrogen mixed atmosphere at 200°C Heat treatment for 1 hour to obtain the lower AZO conductive layer;

[0088] This is used as the lower AZO conductive layer; wherein the AZO ink is prepared through the following steps:

[0089] (a) Weigh 18g of zinc acetate dihydrate for grinding, put it into a beaker, add 4g of glycerol at the same time, and then heat at 100°C for 10 minutes. During the heating process, add ethylene glycol drop by drop and use Stir vigorously with a magnetic stirrer, add 10 g of ethylene glycol dropwise, and finally obtain a clear solution, stop heating;

[0090] (b) When the temperature ...

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Abstract

The invention discloses a composite transparent conducting thin film of a copper-nanowire-based multi-layer structure and a manufacturing method of the composite transparent conducting thin film of the copper-nanowire-based multi-layer structure. A lower AZO conducting layer, a copper-nanowire conducting layer and an upper AZO conducting layer are sequentially manufactured on a flexible substrate with a full solution method. Sodium hydroxide, metallic copper salt, ethidene diamine, hydrazine hydrate and polyvinylpyrrolidone are used in the copper nanowire turbid liquid preparing process with a polyhydric alcohol method, and the molar ratio of the sodium hydroxide to the metallic copper salt to the ethidene diamine to the hydrazine hydrate to the polyvinylpyrrolidone is 1.0-1.5:1.5*10<-4>-3*10<-4>:1.5*10<-4>-3*10<-4>: 1.5*10<-4>-3*10<-4>:1. The obtained composite transparent conducting thin film of the copper-nanowire-based multi-layer structure is good in adhesion with the substrate and has the high stability and the high electrical conductivity; AZO thin films and the flexible substrate are adopted, so that the manufacturing cost is reduced, and the suppleness of the materials is improved. The composite transparent conducting thin film based on the copper nanowires is suitable for flexible electron devices, easily achieves device integration, and is manufactured with the full solution method, the technology is simple, cost is low, and the composite transparent conducting thin film based on the copper nanowires is suitable for industrial manufacturing.

Description

technical field [0001] The invention relates to the field of semiconductors, in particular to a composite transparent conductive film with a copper nanowire-based multilayer structure and a preparation method thereof. Background technique [0002] At present, common transparent conductive films include conductive oxide films, polymer films, carbon nanotube films, silver nanowire films, and silver nanowire films. Among them, the most common conductive oxide film is tin-doped indium oxide (ITO) film, which has excellent photoelectric properties. On a glass substrate, the transmittance of an ITO film with a sheet resistance of 10Ω / □ can reach 90 %. However, indium is rare, and the preparation process of ITO thin film is expensive, so the price of the thin film is relatively high; in addition, the toughness of the thin film is poor, and cracks are easy to occur during use, which limits its application on flexible substrates. Although the cheap liquid deposition method can real...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B5/14B32B9/04B32B15/04C23C20/04B82Y40/00B82Y30/00
Inventor 沈文锋黄琦金徐青松宋伟杰
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI