Silver nanowire transparent conductive thin film and preparation method thereof

A technology of transparent conductive film and silver nanowires, which is applied in the manufacture of cables/conductors, conductive layers on insulating carriers, conductive materials dispersed in non-conductive inorganic materials, etc. Over-rate, increase square resistance and other issues, to achieve the effect of reducing square resistance, tight contact, and large contact area

Inactive Publication Date: 2017-11-07
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the preparation of the traditional silver nanowire transparent conductive film needs to add a resin adhesive to increase the contact between the silver nanowire and

Method used

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  • Silver nanowire transparent conductive thin film and preparation method thereof
  • Silver nanowire transparent conductive thin film and preparation method thereof
  • Silver nanowire transparent conductive thin film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] The embodiment of the present invention also provides a method for preparing the aforementioned silver nanowire transparent conductive film, which includes the following steps:

[0027] Ultrasonic cleaning of flexible substrates;

[0028] Dispersing silver nanowires in a solvent to form a silver nanowire dispersion, uniformly coating the silver nanowire dispersion on a flexible substrate, and drying to obtain a silver nanowire conductive layer;

[0029] The obtained silver nanowire conductive layer is subjected to hot pressing treatment, so that the nano silver wires are plastically deformed and welded to obtain a flat connected silver nanowire transparent conductive film.

[0030] In the preparation method of the silver nanowire transparent conductive film provided by the embodiment of the present invention, the conductive layer of the silver nanowire is mechanically embedded on the surface of the flexible substrate by a hot pressing method, so that the silver nanowire in the c...

Example Embodiment

[0040] Example 1

[0041] Select polyethylene terephthalate as the flexible substrate, and dry it after hydrophilic treatment; disperse the silver nanowires evenly in the ethanol solution and configure to obtain a silver nanowire solution with a concentration of 0.5g / L; Spread the silver nanowire solution uniformly on the flexible substrate by spin coating at a spin coating speed of 3500r / min and dry for 30 seconds to obtain a conductive layer of silver nanowires; place the spin-coated flexible substrate on a heating plate. Hot press treatment, heating plate temperature 100℃, applied pressure 1.5bar, time 10s. The light transmittance of the silver transparent conductive film after the hot pressing treatment is 86.5%, the square resistance is 47.6Ω / square, and the haze is 7.2.

Example Embodiment

[0042] Example 2

[0043] Select polyethylene terephthalate as the flexible substrate, and dry it after hydrophilic treatment; disperse the silver nanowires evenly in the ethanol solution, and configure to obtain a silver nanowire solution with a concentration of 1.0g / L; Spread the silver nanowire solution uniformly on the flexible substrate by spin coating at a spin coating speed of 3500r / min and dry for 30 seconds to obtain a conductive layer of silver nanowires; place the spin-coated flexible substrate on a heating plate. Hot pressing treatment, heating plate temperature 120℃, applied pressure 2.0bar, time 10s. The light transmittance of the silver transparent conductive film after the hot pressing treatment is 85.7%, the square resistance is 41.8Ω / square, and the haze is 10.3.

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Abstract

The present invention is applicable to the field of transparent conductive films, and provides a transparent conductive film of silver nanowires. The transparent conductive film of silver nanowires includes a flexible substrate and silver nanowires covered on the flexible substrate. The silver nanowires The wires are connected in a flattened manner; the flattened connection is an interconnected network formed by plastically deforming the silver nanowires from a cylindrical shape to a strip shape. In the silver nanowire transparent conductive film provided by the present invention, the silver nanowires in the transparent conductive film are inlaid on the flexible substrate in a network shape, and the silver nanowires are flattened and connected, with close contact, large contact area, and no need Adding any binder, the light transmittance of the obtained transparent conductive film can reach 85%-90%, the square resistance is reduced to 30-50Ω/square, and the haze is 3-15.

Description

technical field [0001] The invention belongs to the field of transparent conductive films, in particular to a silver nanowire transparent conductive film and a preparation method thereof. Background technique [0002] The transparent conductive films that have been widely used at present are all prepared on hard substrate materials such as ceramics and glass. Applications. Compared with hard substrate materials, transparent conductive films prepared on organic flexible substrate materials not only have the same photoelectric characteristics, but also have many unique advantages, such as: can be bent and deformed, light and portable, not easy to break, can be The adoption of roll-to-roll industrialized continuous production is conducive to improving efficiency and facilitating transportation. [0003] Silver nanowire transparent conductive film has the characteristics of low surface resistance, high transmittance and high conductivity. It is one of the best choices for maki...

Claims

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Application Information

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IPC IPC(8): H01B1/22H01B1/02H01B5/14H01B13/00
CPCH01B1/22H01B1/02H01B5/14H01B13/00
Inventor 向雄志旷明胜程淼
Owner SHENZHEN UNIV
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