Silver nanowire transparent conductive film and its preparation method and application

A technology of transparent conductive film and silver nanowires, which can be used in equipment for manufacturing conductive/semiconducting layers, cable/conductor manufacturing, conductive layers on insulating carriers, etc., and can solve the chemical stability of silver nanowire transparent conductive films. and poor thermal stability, affecting the optoelectronic properties of silver nanowire transparent conductive films, and silver nanowires prone to agglomeration, etc., to achieve the effect of improving optoelectronic properties, high reliability, and avoiding poor adhesion.

Active Publication Date: 2022-06-17
ZHEJIANG DAHUA TECH CO LTD
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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 its preparation method and application

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preparation example Construction

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

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

[0030] S2, mixing the silver nanocrystal seed dispersion, the second silver source and the 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, then adding a curing accelerator, and dispersing to obtain a second dispersion of silver nanowires;

[0032] S4, the transparent substrate is surface act...

Embodiment 1

[0055] Add 0.01g of silver nitrate, 0.45g of 5-aldehyde-2-phenothiaboronic acid, 0.31g of PVP and 10g of ethanol to the beaker respectively to obtain the first mixture, and the first mixture is continuously stirred and reacted for 2h to obtain The silver nanowire seed dispersion liquid, wherein the grain size of the silver nanoseed is 2nm.

[0056] Then, 0.09 g of silver nitrate and 1 g of bisphenol resin were added to the above-obtained silver nano-crystal seed dispersion to obtain a second mixture with a viscosity of 80 Pa.s. The second mixture was irradiated with ultraviolet light for 24 hours to obtain silver nano-particles. The first dispersion liquid of the wire, wherein the wire diameter of the silver nanowire is 30 nm-65 nm, and the wire length is 5 μm-9 μm.

[0057] Then, the first dispersion liquid obtained above was heated to remove ethanol, and then 0.01 g of 2-ethyl-4-methylimidazole was added, and ultrasonically stirred and dispersed to obtain a second dispersion...

Embodiment 2

[0060] Add 0.01g of silver nitrate, 0.2g of 5-aldehyde-2-phenothiboronic acid, 0.25g of PVP and 8g of ethanol to the beaker respectively to obtain the first mixture, and the first mixture is continuously stirred and reacted for 2h to obtain The silver nanowire seed dispersion liquid, wherein the grain size of the silver nanoseed is 4 nm.

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

[0062] Then, the first dispersion liquid obtained above was heated to remove ethanol, and then 0.008 g of 2-ethyl-4-methylimidazole was added, and ultrasonically stirred and dispersed to obtain a second dispersion liquid of ...

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Abstract

The invention relates to a silver nanowire transparent conductive film and its preparation method and application. The preparation method comprises: mixing a first silver source, a reducing agent, a protective agent and a polar solvent to obtain a first mixture and reacting to obtain silver The nano crystal seed dispersion liquid, wherein, the reducing agent is an aldehyde-containing anhydride; the silver nano crystal seed dispersion liquid, the second silver source and a thermosetting resin are mixed to obtain a second mixture and irradiated with ultraviolet light to obtain the first silver nanowire A dispersion liquid, wherein the viscosity of the second mixture is less than or equal to 200Pa.s; removing the polar solvent in the first dispersion liquid, and then adding a curing accelerator to disperse to obtain the second dispersion liquid of silver nanowires; the transparent substrate Surface activation is carried out, and then the second dispersion liquid is placed on the activated transparent substrate, and cured to obtain a silver nanowire transparent conductive film. The silver nanowire transparent conductive film obtained by the preparation method of the invention has excellent photoelectric properties and can be widely used in fields such as cameras.

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 a preparation method and application thereof. Background technique [0002] The silver nanowire transparent conductive film has the advantages of excellent optoelectronic properties, 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 silver nanowire transparent conductive films are relatively poor, and traditional processes usually deposit a protective layer on the surface to improve the reliability of silver nanowire transparent conductive films. However, the preparation of the protective layer will increase the operation process, resulting in an increase in the process time, which is not conducive to industrialization. At the same time, there is also a problem o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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 CO LTD
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