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Nano silver wire-containing transparent conductive thin film and preparation method thereof

A technology of transparent conductive film and nano-silver wire, which is used in cable/conductor manufacturing, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., can solve the problems of indium being highly toxic, poisoning substrates, and expensive

Inactive Publication Date: 2017-11-14
SHENZHEN VKIRIN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But since In 2 o 3 Expensive, high cost, and indium is highly toxic and harmful to the human body during preparation and application
In addition, the atomic mass of Sn and In is relatively large, so it is easy to penetrate into the substrate during film formation and poison the substrate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A preparation method of a transparent conductive film with high light transmittance and low surface resistance, specifically:

[0043] Step (1), preparation of silver nanowires: add 2mmol / L complexing agent CuCl to 100ml ethylene glycol at 160°C 2 ·H 2 O solution, after 30min, 30ml of 0.2mmol / L AgNO 3 Solution and 30ml of 0.4mmol / L PVP solution were added to it, with an interval of 10 minutes in between, and a bright gray suspension could be obtained within 10 minutes of reaction. After cooling, it was dissolved and purified repeatedly, centrifuged and dried.

[0044] In step (2), add 10g of silver nanowires and 14g of silane coupling agent KH550 into dry DMF, stir evenly, react at 40°C for 12h, cool to room temperature, filter, wash with dry DMF, and dry to constant weight.

[0045] Step (3), prepare a composite conductive coating, 1wt% nano-silver wire alcohol / water solution (the length of the nano-silver wire is 10-15um, the aspect ratio is 180-200, the volume rati...

Embodiment 2

[0048] A preparation method of a transparent conductive film with high light transmittance and low surface resistance, specifically:

[0049] Step (1), preparation of nano-silver wire: preparation of nano-silver wire: add 2mmol / L complexing agent CuCl to 100ml ethylene glycol at 160°C 2 ·H 2 O solution, after 30min, 30ml of 0.2mmol / L AgNO 3 Solution and 30ml of 0.4mmol / L PVP solution were added to it, with an interval of 10 minutes in between, and a bright gray suspension could be obtained within 10 minutes of reaction. After cooling, it was dissolved and purified repeatedly, centrifuged and dried.

[0050] In step (2), add 10g of nano-silver wire and 14g of silane coupling agent γ-glycidyl etheroxypropyl trimethoxysilane to dry DMF, stir well, react at 40°C for 12h, cool to room temperature, filter, and use Wash with dry DMF and dry to constant weight.

[0051] Step (3) is to prepare a composite conductive coating. Ultrasonic mixing of 2wt% nanosilver alcohol / water solutio...

Embodiment 3

[0054] A preparation method of a transparent conductive film with high light transmittance and low surface resistance, specifically:

[0055] Step (1), preparation of silver nanowires: add 2mmol / L complexing agent CuCl to 100ml ethylene glycol at 160°C 2 ·H 2 O solution, after 30min, 30ml of 0.2mmol / L AgNO 3 Solution and 30ml of 0.4mmol / L PVP solution were added to it, with an interval of 10 minutes in between, and a bright gray suspension could be obtained within 10 minutes of reaction. After cooling, it was dissolved and purified repeatedly, centrifuged and dried.

[0056] In step (2), add 10g of nano-silver wire and 14g of silane coupling agent γ-glycidyl etheroxypropyl trimethoxysilane to dry DMF, stir well, react at 40°C for 12h, cool to room temperature, filter, and use Wash with dry DMF and dry to constant weight.

[0057] Step (3) is to prepare a composite conductive coating. Ultrasonic mixing of 5wt% nanosilver alcohol / water solution and 1wt% ITO solution at a weig...

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PUM

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Abstract

The present invention provides a preparation method of a high-light transmittance and low-area resistance transparent conductive thin film. The method includes the following steps that: step (1), a nano silver wire is prepared; step (2), surface modification is performed on the nano silver wire trough using a silane coupling agent in an organic solvent; step (3), a composite conductive coating is prepared, a nano silver wire, alcohol / water solution and an ATO solution / ITO solution are subjected to ultrasonic mixing according to a weight ratio of 1-10:1-10, so that 100 parts by weight of mixed liquid can be obtained, 0.1-5 parts by weight of dispersant is added into the liquid in the this process, and then 1-10 parts by weight of water-soluble polymer resin of which the average molecular weight (Mn) is smaller than 10000 is added into the obtained liquid, and a newly obtained liquid is further subjected to ultrasonic mixing for 10 to 60 minutes, centrifugal separation is performed, a supernatant is extracted, namely, the composite conductive coating can be obtained; and step (4), the composite conductive coating obtained in the step (3) coats the surface of a surface-activated PET thin film, so that the transparent conductive thin film can be obtained.

Description

technical field [0001] The invention relates to a transparent conductive film and a preparation method thereof, in particular to a transparent conductive film containing nano silver wires and a preparation method thereof. Background technique [0002] Transparent conductive film is a film with both electrical conductivity and high light transmittance. It is widely used in solar cells, displays, gas sensors, antistatic coatings, semiconductor / insulator / semiconductor heterojunctions, and modern fighters. window etc. According to the composition of the film, it is mainly divided into metal conductive film, oxide conductive film, polymer conductive film and composite conductive film. In terms of application, metal oxide thin films dominate. [0003] Common oxide transparent conductive films (TCO) mainly include oxides of In, Zn, Sn and Cd and composite multi-component oxide films. The current oxide transparent film system includes ITO (Sn-doped In 2 o 3 ), AZO (Al-doped ZnO...

Claims

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Application Information

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IPC IPC(8): H01B1/22H01B13/00B22F9/24B22F1/00
CPCH01B1/22H01B13/00B22F9/24B22F1/07
Inventor 李冬霜刘果刘畅刘英博
Owner SHENZHEN VKIRIN TECH DEV