Silver nanowire transparent conductive film and preparation method and application thereof

A technology of transparent conductive film and silver nanowire, which is applied in the direction of equipment for manufacturing conductive/semiconductive layer, cable/conductor manufacturing, conductive layer on insulating carrier, etc., can solve the chemical stability of silver nanowire transparent conductive film And poor thermal stability, affecting the photoelectric performance of silver nanowire transparent conductive film, silver nanowires are prone to agglomeration, etc., to achieve the effect of improving photoelectric performance, high reliability, and avoiding poor binding force

Active Publication Date: 2022-04-19
ZHEJIANG DAHUA TECH
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  • Abstract
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Problems solved by technology

However, the chemical stability and thermal stability of the silver nanowire transparent conductive film are relatively poor, and the traditional process usually deposits a protective layer on its surface to improve the reliability of the silver nanowire transparent conductive film
However, the preparation of the protective layer will increase the operation process, resulting in an increase in process time, which is not conducive to industrialization. At the same time, there is still a problem of bonding between the composite interfaces.
[0003] For this reason, the traditional process also has the silver nanowires directly dispersed in the resin, and the silver nanowire transparent conductive film is obtained by one-step coating and other processes. However, the silver nanowires are prone to agglomeration in the resin, thus affecting the silver nanowire transparent conductive film. photoelectric performance

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

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preparation example Construction

[0028] For this reason, the preparation method of the silver nanowire transparent conductive film provided by the invention comprises the following steps:

[0029] S1, mixing the first silver source, reducing agent, protective agent and polar solvent to obtain the first mixture, reacting the first mixture to prepare silver nano-crystal seed dispersion liquid, wherein the reducing agent is an aldehyde containing Anhydrides;

[0030] S2, mixing the silver nano-crystal seed dispersion, the second silver source and a thermosetting resin to obtain a second mixture, and irradiating the second mixture with ultraviolet light to obtain a first dispersion of silver nanowires, wherein , the viscosity of the second mixture is less than or equal to 200Pa.s;

[0031] S3, removing the polar solvent in the first dispersion, and then adding a curing accelerator to disperse to obtain a second dispersion of silver nanowires;

[0032] S4, activating the surface of the transparent substrate, and...

Embodiment 1

[0055] Add 0.01g of silver nitrate, 0.45g of 5-formyl-2-phenothioboronic acid, 0.31g of PVP and 10g of ethanol into a beaker to obtain the first mixture, and keep stirring the first mixture for 2h to obtain The silver nanowire seed crystal dispersion liquid, wherein, the grain size of the silver nanowire seed crystal is 2nm.

[0056] Then 0.09g of silver nitrate and 1g of bisphenol resin are added to the silver nanocrystal seed dispersion obtained above to obtain a second mixture with a viscosity of 80Pa.s. The second mixture is irradiated with ultraviolet light for 24h to obtain silver nanocrystals. The first dispersion liquid of wires, wherein the wire diameter of the silver nanowires is 30nm-65nm, and the wire length is 5μm-9μm.

[0057] Then, the ethanol was removed from the first dispersion liquid obtained above by thermal evaporation, and then 0.01 g of 2-ethyl-4-methylimidazole was added, stirred and dispersed by ultrasonic to obtain the second dispersion liquid of silv...

Embodiment 2

[0060] 0.01g of silver nitrate, 0.2g of 5-formyl-2-phenothioneic acid, 0.25g of PVP and 8g of ethanol were added to the beaker to obtain the first mixture, and the first mixture was continuously stirred for 2h to obtain The silver nanowire seed crystal dispersion liquid, wherein, the grain size of the silver nanowire seed crystal is 4nm.

[0061] Then 0.04g of silver nitrate and 1g of bisphenol resin are added to the silver nanocrystal seed dispersion obtained above to obtain a second mixture with a viscosity of 130Pa.s, and the second mixture is irradiated with ultraviolet light for 30h to obtain silver nanocrystals. The first dispersion liquid of wires, wherein the wire diameter of the silver nanowires is 35nm-60nm, and the wire length is 5μm-10μm.

[0062] Then, the ethanol was removed from the first dispersion liquid obtained above by thermal evaporation, and then 0.008 g of 2-ethyl-4-methylimidazole was added, stirred and dispersed by ultrasonic to obtain the second dispe...

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Abstract

The invention relates to a silver nanowire transparent conductive film and a preparation method and application thereof.The preparation method comprises the steps that a first silver source, a reducing agent, a protective agent and a polar solvent are mixed to obtain a first mixture, the first mixture reacts to obtain silver nanocrystal seed dispersion liquid, and the reducing agent is aldehyde-containing anhydride; the silver nanocrystal seed dispersion liquid, a second silver source and thermosetting resin are mixed to obtain a second mixture, the second mixture is irradiated with ultraviolet light, first dispersion liquid of the silver nanowires is obtained, and the viscosity of the second mixture is smaller than or equal to 200 Pa.s; removing the polar solvent in the first dispersion liquid, then adding a curing accelerator, and dispersing to obtain a second dispersion liquid of the silver nanowires; and activating the surface of a transparent substrate, placing the second dispersion liquid on the activated transparent substrate, and curing to obtain the silver nanowire transparent conductive film. The silver nanowire transparent conductive film obtained by the preparation method has excellent photoelectric properties and can be widely applied to the fields of cameras and the like.

Description

technical field [0001] The invention relates to the technical field of transparent conductive films, in particular to a silver nanowire transparent conductive film and its preparation method and application. Background technique [0002] Silver nanowire transparent conductive film has the advantages of excellent photoelectric performance, simple preparation process, easy to achieve large-area film formation, and can be bent and not fragile, making it the best substitute for ITO. However, the chemical stability and thermal stability of the silver nanowire transparent conductive film are relatively poor, and the traditional process usually deposits a protective layer on its surface to improve the reliability of the silver nanowire transparent conductive film. However, the preparation of the protective layer will increase the operation process, resulting in an increase in process time, which is not conducive to industrialization. At the same time, there is a problem of bonding ...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B5/14B22F9/24B22F1/0545
CPCH01B13/0026H01B5/14B22F9/24
Inventor 郑博达陈洁汪聪陈鸿武
Owner ZHEJIANG DAHUA TECH
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