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Flexible transparent conductive film based on organic polymers and silver nanowires and preparation method thereof

A technology of transparent conductive film and transparent conductive film, applied in nanostructure manufacturing, conductive layer on insulating carrier, nanotechnology, etc., can solve the problems of conductive layer easily damaged by friction, surface is not flat enough, poor adhesion, etc.

Inactive Publication Date: 2011-06-08
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The literature (S.De et al., Silver nanowire networks as flexible, transparent, conducting films: extremely high DC to optical conductivity ratios, Acs Nano 3 (2009) 1767-1774) reported a method in polyethylene terephthalate ( A method for preparing silver nanowire conductive layer on PET) film, but the adhesion between silver nanowire and PET is poor, the conductive layer is easily damaged by friction, and the surface is not flat enough, and the surface fluctuation may be as high as 30nm-300nm, which is still far from practical application. There is quite a gap

Method used

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  • Flexible transparent conductive film based on organic polymers and silver nanowires and preparation method thereof
  • Flexible transparent conductive film based on organic polymers and silver nanowires and preparation method thereof
  • Flexible transparent conductive film based on organic polymers and silver nanowires and preparation method thereof

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Effect test

Embodiment 1

[0020] Ultrasonic cleaned, hydrophilic flat glass is used as the substrate. A specific volume of silver nanowire suspension in water is taken and filtered to form a uniform silver nanowire conductive network structure on the filter membrane. The filter membrane is used as a transfer membrane, pressed tightly on the glass, the filter membrane is removed after heat treatment, and the glass sheet covered with the silver nanowire conductive layer is heat treated at 200° C. for 5-30 minutes. Then on the glass, the spin-coating weight percentage concentration is 10% polyvinyl alcohol (PVA) aqueous solution, forms transparent PVA film after 120 ℃ of drying, has formed good wrapping to the silver nanowire that is positioned at glass and PVA interface, silver nanowire Only the surface in contact with the glass was not wetted by PVA. The conductive layer of PVA and silver nanowires is peeled off from the glass surface to form a flat, firm and transparent conductive film in which silver...

Embodiment 2

[0023] Using the clean and hydrophilic flat glass cleaned by ultrasonic as the substrate, the ethanol suspension containing silver nanowires was sprayed, and after vacuum drying at room temperature, a uniform continuous conductive network of silver nanowires was formed on the glass, and then heat-treated at 200°C for 5 -30 minutes. Then on the glass, the spin-coating weight percentage concentration is 20% polyvinyl alcohol (PVA) aqueous solution, forms transparent PVA film after 120 ℃ of drying, has formed good wrapping to the silver nanowire that is positioned at glass and PVA interface, silver nanowire Only the surface in contact with the glass was not wetted by PVA. The conductive layer of PVA and silver nanowires is peeled off from the glass surface to form a flat, firm and transparent conductive film in which silver nanowires are semi-embedded in the transparent PVA film surface. The distribution density of the silver nanowires is controlled by spraying the concentration...

Embodiment 3

[0025] Using the clean and hydrophilic flat glass cleaned by ultrasonic as the substrate, the ethanol suspension containing silver nanowires was sprayed, and after vacuum drying at room temperature, a uniform continuous conductive network of silver nanowires was formed on the glass, and then heat-treated at 200°C for 5 -30 minutes. Then cast a polyvinyl alcohol (PVA) aqueous solution with a concentration of 20% by weight on the glass, take it out after vacuum drying at room temperature for 24 hours, and heat-treat it in air at 120° C. for 1 hour. The PVA film and the silver nanowire conductive layer are peeled off from the glass surface to form a flat, firm flexible transparent conductive film in which the silver nanowires are semi-embedded in the transparent PVA film surface layer. The distribution density of the silver nanowires is controlled by spraying the concentration of the silver nanowire suspension and the time of spraying, so as to adjust the sheet resistance and vis...

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Abstract

The invention provides a flexible transparent conductive film based on organic polymers and silver nanowires and a preparation method thereof. The flexible transparent conductive film based on organic polymers and silver nanowires is characterized in that a continuous conductive network formed by the silver nanowires is half-buried in the surface layer of the organic polymers, part of the surfaces of the silver nanowires is exposed on the surfaces of the organic polymers, and the conductive surface of the transparent conductive film is formed by the surfaces of the organic polymers and the surfaces of the silver nanowires. First, a conductive silver nanowire layer is prepared and uniformly distributed on a flat surface, and then a transparent organic polymer layer is distributed on the silver nanowire layer, thus the flexible transparent conductive film is formed. The flexible transparent conductive film has the advantages of high visible light transmittance, low square resistance, firm combination and flat surface.

Description

technical field [0001] The invention provides a flexible transparent conductive film composed of organic polymers and silver nanowires and a preparation method thereof. Background technique [0002] Transparent conductive film is a functional film with high visible light transmittance and certain conductivity. It is widely used as transparent electrodes in liquid crystal displays, touch screens, electroluminescent devices and thin film solar cells, as well as antistatic coatings and electromagnetic shielding layer. The transparent conductive film can achieve high visible light transmittance and high electrical conductivity at the same time, so it can ensure the simultaneous transmission of visible photons and carriers. So far, the transparent conductive material with the longest history and the best overall performance is tin-doped indium oxide (ITO), which can achieve a square resistance value of less than 10Ω and a resistivity lower than 1.5×10 -4 Ωcm -1 . But ITO is ...

Claims

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Application Information

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IPC IPC(8): H01B5/14H01B13/00B82B1/00B82B3/00
Inventor 曾小燕卢灿忠
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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