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Composite transparent conductive thin film and preparation method thereof

A technology of transparent conductive film and treatment film, applied in cable/conductor manufacturing, conductive layer on insulating carrier, conductive material dispersed in non-conductive inorganic material, etc. shedding and other problems, to achieve the effect of cost saving and effective dispersion

Active Publication Date: 2015-01-21
SHENZHEN SMART SECURITY & SURVEILLANCE SERVICE ROBOT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these surfactants will completely or partially cover the metal nanowires, which will reduce the electrical conductivity of the metal nanowires and often require subsequent sintering.
[0007] However, due to the existence of the sintering process, on the one hand, it is difficult to form a transparent electrode on a plastic substrate with low heat resistance similar to PET; on the other hand, due to the high sintering temperature, the metal nanowires are easy to break
[0008] In addition, metal nanowire films prepared by spraying, screen printing, roller coating, spin coating, etc., such as silver nanowire transparent conductive film, are not firmly bonded to the substrate, making the film easy to fall off.
In the prior art, an organic adhesion layer is often added on the substrate, but setting the adhesion layer not only increases the overall thickness of the transparent conductive film, but also reduces the mobility of electrons.

Method used

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  • Composite transparent conductive thin film and preparation method thereof
  • Composite transparent conductive thin film and preparation method thereof
  • Composite transparent conductive thin film and preparation method thereof

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preparation example Construction

[0028] Such as Figure 4As shown, one embodiment of the present invention is a preparation method of a composite transparent conductive film, which includes the following steps: adding the dispersed silicon-containing nanoparticle solution to the dispersed metal nanowire solution to obtain a primary mixed solution; adding the dispersed conductive flake carbon elemental solution to the dispersed primary mixed solution to obtain the mixed solution to be treated; vacuum filtering the dispersed mixed solution to be treated to obtain the film to be treated and The first filter paper attached to it; the first filter paper is wetted with water, the first substrate, the membrane to be treated and the first filter paper attached thereto, the second filter paper wetted with water, and the second substrate are fixed and then dried, that is , the first substrate, the first filter paper wetted with water and the membrane to be treated, the second filter paper wetted with water, and the sec...

Embodiment 1

[0057] Add acetone to silver nanowires dispersed in aqueous solution or organic solution, centrifuge several times until the infrared spectrum shows that there are no surfactant groups such as PVP on the surface of silver nanowires, and ultrasonically disperse in distilled water for use.

[0058] Disperse silicon nanoparticles in distilled water, sonicate for 30 minutes, slowly drop into the aqueous solution in which silver nanowires are dispersed, stir for 5 minutes, and sonicate for 5 minutes; for example, at a speed of 1 drop per second or 1 drop every 5 seconds, the The dispersed silicon nanoparticle aqueous solution is added dropwise to the aqueous solution in which the silver nanowires are dispersed.

[0059] Then, slowly add the aqueous solution of graphene dispersed in the above mixed solution dropwise, for example, at the speed of 1 drop per second or 1 drop per 5 seconds, the aqueous solution of the dispersed graphene is added dropwise to the above mixed solution; the...

Embodiment 2

[0062] Add acetone to silver nanowires dispersed in aqueous solution or organic solution, centrifuge several times until the infrared spectrum shows that there are no surfactant groups such as PVP on the surface of silver nanowires, and ultrasonically disperse in distilled water for use. Disperse the silicon nanoparticles in distilled water, and after ultrasonication for 30min, slowly add it dropwise into the aqueous solution dispersed with silver nanowires, stir for 5min, and ultrasonicate for 5min; slowly add the aqueous solution dispersed with graphene into the above mixed solution, and stir for 5min, Ultrasound for 10 minutes, wherein the mass ratio of silver nanowires, silicon nanoparticles, and graphene is 12:6:1. Ultrasonic disperse the above mixed solution evenly, vacuum filter to form a film, and the filter paper used is mixed cellulose filter paper. The resulting filter membrane is placed on a copper sheet, wherein the nanowire faces the copper sheet, and after being...

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Abstract

The invention discloses a piece of composite transparent conductive thin film and a preparation method thereof. The composite transparent conductive thin film comprises metal nanometer wires, silicon-contained nanometer particles and conductive sheet carbon elementary substances, wherein a conductive grid of the composite transparent conductive thin film is composed of all the metal nanometer wires, the silicon-contained nanometer particles are adsorbed to the peripheries of all the metal nanometer wires under the intermolecular forces and are used for dispersing all the metal nanometer wires, the conductive sheet carbon elementary substances are used for connecting all the metal nanometer wires in an electric conduction mode. The composite transparent conductive thin film can be used as a flexible transparent electrode and can be widely applied to the photoelectric field of solar cells, touch screens, electroluminescence displays, electronic paper, liquid crystal displays, plasma displays, electromagnetic shielding material and the like.

Description

technical field [0001] The invention relates to a transparent conductive film, in particular to a composite transparent conductive film and a preparation method thereof. Background technique [0002] Transparent conductive film is a kind of film that can conduct electricity and has high transparency in the visible light range. It is mainly used as a window material for optoelectronic devices, among which optoelectronic devices such as LEDs and thin film solar cells. Indium tin oxide (ITO) thin film has the advantages of good light transmission, low resistivity, and stable chemical properties, and is currently the most widely used. However, the brittleness of ITO thin films, poor toughness, high synthesis temperature, and poor combination with flexible substrates, and the limited reserves of indium and rising prices, these shortcomings limit its further application, and it is urgent to develop other alternatives. Material. [0003] Carbon nanotubes, graphene and metal nanow...

Claims

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Application Information

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IPC IPC(8): H01B5/14H01B1/16H01B1/22H01B1/18H01B1/24H01B13/00
Inventor 王守玲
Owner SHENZHEN SMART SECURITY & SURVEILLANCE SERVICE ROBOT CO LTD
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