Method for preparing conductive metal film

Abstract

The invention relates to the field of electronic materials and discloses a method for preparing a metal conductive film. Firstly prepare the alginate aqueous solution and metal particle dispersion respectively, then coat the alginate aqueous solution on the substrate, and then coat the metal particle dispersion on the substrate to make a metal conductive film, and then coat the metal conductive film. The base of the film is immersed in the inorganic salt solution, and finally the base is taken out from the inorganic salt solution and the metal conductive film is cleaned with deionized water. Compared with the prior art, the method for preparing the metal conductive film in the present invention increases the conductivity of the metal conductive film by 1 to 4 times, improves the adhesion between the metal conductive film and the substrate, and the process temperature is low , the operation process is simple and the cost is low.

Description

technical field [0001] The invention relates to the field of electronic materials, in particular to a method for preparing a metal conductive film, especially a method for preparing a metal transparent conductive film. Background technique [0002] Transparent conductive films have good electrical conductivity and high light transmittance in the visible range, and are widely used in flat panel displays, thin-film solar cells, sensors, touch screens, and stretchable electronics. Based on conductivity considerations, metal transparent conductive films, especially silver nanowire transparent conductive films, are one of the most promising candidates to replace commercial indium tin oxide ITO. However, because the silver nanowires are usually wrapped with a layer of stabilizer with a decomposition temperature as high as 350-400 degrees, such as polyvinylpyrrolidone (PVP), the contact resistance between the wires is relatively large, and usually requires a high temperature treatm...

AI Technical Summary

Problems solved by technology

Using a high-energy source, although the conductivity of the film is improved and the efficiency is high, it only takes a few microseconds, but it is prone to over-sintering. Usually, the peak point of conductivity is also the point where the conductivity begins to decline, so it is difficult to operate in practice. control

[0005] So far, there is no effective, low-cost, high-efficiency method that can simultaneously improve the adhesion and conductivity of silver nanowire conductive films.

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