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A preparation method of embedded multi-oriented metal nanowire transparent conductive film

A transparent conductive film, metal nanowire technology, applied in conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc., can solve problems such as deteriorating the stability of AgNWs, and achieve high flexibility and high flexibility. Electrical conductivity, the effect of improving electrical conductivity

Active Publication Date: 2018-08-10
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some studies have pointed out that PEDOT:PSS will deteriorate the stability of AgNWs

Method used

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  • A preparation method of embedded multi-oriented metal nanowire transparent conductive film
  • A preparation method of embedded multi-oriented metal nanowire transparent conductive film
  • A preparation method of embedded multi-oriented metal nanowire transparent conductive film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 Hydroxylation of Temporary Substrate

[0035] In this case, the temporary substrate was treated with hydroxylation to enhance the hydrophilicity of the substrate surface, which is conducive to the uniform distribution of metal nanowires on the substrate surface and the formation of directional alignment. In addition, the hydroxyl group provides reaction sites for the subsequent grafting of anti-adhesive groups; the temporary substrate used can be a flexible substrate or a rigid substrate; the hydroxylation treatment used can be carried out by chemical solution surface grafting or ultraviolet ozone treatment, etc. . Provide two embodiments respectively below and illustrate:

[0036] If the temporary substrate used is flexible polyethylene terephthalate (PET). By pulling impregnation method, it was immersed in APTES-toluene mixed solution, the concentration of APTES was 5wt%, the immersion time was 10min, and then pulled out from APTES at a speed of 2000μm / s. ...

Embodiment 2

[0038] Embodiment 2 Preparation of double-oriented silver nano wire transparent film

[0039]For one-dimensional metal nanowires, the micro-grain on the Meyer rod guides the nanowires during the rod coating process to realize the control of the orientation of the nanowires. After a single coating, the film is dried, and then the nanowires are sequentially coated for the next time, so that the double-oriented ordered metal nanowires can be obtained to form a uniform conductive network.

[0040] In this case, hydroxylated glass was used as a temporary substrate, and nano silver wires were used as metal nanowires to prepare multilayer ordered conductive films. The silver nanowires used have an average diameter of 34 nm and a length of 18 μm. The silver nanowires are dispersed in an ethanol solution with a concentration of 10 mg / ml. The silver nano wire dispersion liquid and anhydrous isopropanol were mixed according to the mass ratio of 1:4, and shaken to disperse evenly after u...

Embodiment 3

[0043] Embodiment 3 selective hydrophilic treatment

[0044] The key step of the invention is to selectively modify the nano silver wire-temporary substrate, that is, only carry out hydrophobic modification on the modified substrate, without modifying the nano silver wire itself.

[0045] Preference is given to hexamethyldisilane as the modifying material. Draw 2 ml of hexamethyldisilane solution, drop it into a Petri dish, and place it in a closed oven with the temperature set at 70 °C; place the above-mentioned ordered silver nanowires-hydroxylated glass above the solution.

[0046] During the evaporation of the solution, the imino groups of the hexamethyldisilane solution react with the hydroxyl groups on the glass surface to generate trimethylsiloxy groups. For sufficient reaction, the deposition time was set at 20 minutes. Pure silver nanowires do not have hydroxyl groups, so they will not bond with silane, and their surface will not be hydrophobized. The purpose of th...

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Abstract

The invention discloses a preparation method for an embedded multi-orientation metal nanowire transparent conductive film. The preparation method comprises the following steps that S1. a metal nanowire solution is added in a temporary substrate and then metal nanowires are arranged in an orientation way, wherein the temporary substrate is made of hydrophilic material; S2. surface modification is performed on the temporary substrate so that the temporary substrate is enabled to be hydrophobic from being hydrophilic, and a surface modified substrate-metal nanowire film is obtained; and S3. embedding and stripping process is performed: the metal nanowires are embedded in cure adhesive by using the cure adhesive and the cure adhesive is stripped from the temporary substrate. The hydrophilic and hydrophobic performance of the temporary substrate is adjusted so that the embedded multi-orientation metal nanowire transparent conductive film having better conductivity, adhesiveness, flatness and stability is obtained.

Description

technical field [0001] The invention relates to the field of film conduction, in particular to a method for preparing an embedded multi-orientation metal nanowire transparent conductive film. Background technique [0002] Transparent conductive film is a basic optoelectronic material with high conductivity and high transparency in the visible light band. It is widely used in optoelectronic display fields such as displays, light-emitting devices, solar cells, sensors, and flexible touch screens. It has broad commercial application prospects. The traditional transparent conductive film is based on indium tin oxide material. Although the display optoelectronic manufacturing technology based on this material is quite mature, the cost is relatively high because indium tin oxide contains rare materials; and the flexibility of indium tin oxide film is very poor. , cannot be used to prepare flexible displays, and is greatly limited in application. In recent years, scientists have d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B13/00H01B1/22
CPCH01B1/22H01B13/0013
Inventor 杨柏儒刘贵师许钰旺谢汉萍
Owner SUN YAT SEN UNIV
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