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Preparation method of nano silver film

A nano-silver and thin-film technology, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve the problems of difficult uniform coating, complex process, easy agglomeration, etc., and achieves low cost, simple preparation method, Avoid the effect of easy agglomeration

Active Publication Date: 2018-01-12
SOUTH CHINA NORMAL UNIVERSITY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional method of preparing nano-silver conductive film needs to prepare a suspension of nano-silver particles or nano-silver wires, and then coat and dry on the substrate, which has the disadvantages of complex process, easy agglomeration, and difficulty in uniform coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Take a substrate, adopt the process of screen printing to coat a layer of silver ammonia solution and 2 layers of polyvinylpyrrolidone with a concentration of 30mmol / L on the substrate, and the molar ratio of the coated polyvinylpyrrolidone to silver ammonia solution is 10 : 1, and then placed under an ultraviolet light source with an emission wavelength of 365nm and a power of 300W to irradiate for 30min. The preparation of nano-conductive films by screen printing has the advantages of low cost, good reproducibility, saving of raw materials, and short preparation cycle. The traditional screen printing method for preparing nano-silver films needs to prepare a suspension of nano-silver particles or nano-silver wires. Coating and drying are realized on the substrate, which has the disadvantages of complex process, easy agglomeration, and difficulty in uniform coating. The present invention preferably adopts the screen printing method to circularly coat the silver source an...

Embodiment 2

[0031] Take a substrate, and apply a layer of silver ammonia solution with a concentration of 1mmol / L and 5 layers of polyvinylpyrrolidone on the substrate by screen printing, and the molar ratio of the coated polyvinylpyrrolidone to silver ammonia solution is 100 :1, and then placed under an ultraviolet light source with an emission wavelength of 300nm and a power of 350W to irradiate for 120min.

Embodiment 3

[0033] Take a substrate, and apply a layer of silver ammonia solution and 2 layers of dimethylamine borane with a concentration of 1mmol / L on the substrate by the process of screen printing, and circulate the coating for 3 times. The coated polyvinylpyrrolidone and The molar ratio of the silver-ammonia solution is 30:1, and then it is irradiated for 30 minutes under an ultraviolet light source with an emission wavelength of 400 nm and a power of 250 W.

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Abstract

The invention discloses a preparation method of a nano silver film. The preparation method is characterized in that a substrate is circularly coated with a silver source and a reducing agent, and growing and adhesion of the nano silver film on the substrate can be achieved at the same time. The preparation method is simple, solves the problem that in a traditional preparation technology, nano silver particles or nanowires are liable to aggregate and are hard to uniformly smear due to the fact that the nano silver particles or nanowires are firstly prepared and then are smeared on the substrateand dried, and has the advantages that cost is low, the production cycle is short, and the method is applicable to industrialization.

Description

technical field [0001] The invention relates to the technical field of thin film electrodes, in particular to a method for preparing a nano silver thin film. Background technique [0002] Conductive film electrodes are essential components in touch screens, solar cells, OLEDs, LCDs and other fields, among which the most widely used is ITO (indium tin oxide) transparent conductive film. However, due to the shortcomings of ITO thin films such as poor thermal stability, brittleness, difficulty in deformation, and high price, ITO thin films are gradually replaced by conductive thin films of other materials. Nano-silver conductive film has the advantages of excellent conductivity, good light transmittance, low cost and easy preparation, and can become the material of choice for preparing conductive films with better performance than ITO. The traditional method of preparing nano-silver conductive film needs to prepare a suspension of nano-silver particles or nano-silver wires, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C18/44
Inventor 周蕤叶倩灵周国富
Owner SOUTH CHINA NORMAL UNIVERSITY
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