Method for preparing silver nanowire-titanium dioxide composite transparent electrode and transparent electrode

Abstract

The invention discloses a method for preparing a silver nanowire-titanium dioxide composite transparent electrode and a transparent electrode. The method comprises the steps of: taking silver nanowire-ethyl alcohol suspension, adding titanium tetraisopropoxide and ethanolamine into the suspension, shaking until silver nanowires are uniformly dispersed in the suspension, and forming silver nanowire-titanium dioxide sol gel; uniformly spin-coating the sol gel on a transparent substrate to form a silver nanowire-titanium dioxide sol gel thin film; and heating the transparent substrate spin-coated with the gel thin film, and until solution on the surface of the transparent substrate is volatilized and titanium dioxide sol gel is decomposed into titanium dioxide, cooling to the room temperature so as to form a random silver nanowire network completely coated with the titanium dioxide thin film. The transparent electrode not only has excellent electrical conductivity, transmittance and mechanical property, but also has excellent thermal and chemical stability due to coating of titanium dioxide; the method is unrelated to the substrate area, the substrate surface appearance and substrate flexibility, and is simple in process, high in repeatability and reliability and suitable for large-area batch production.

Description

technical field [0001] The invention belongs to the technical field of optoelectronics, and in particular relates to a method for preparing a silver nanowire-titanium dioxide composite transparent electrode and a silver nanowire-titanium dioxide composite transparent electrode. Background technique [0002] Transparent electrodes are thin-film materials with high conductivity and high visible light transmittance, and are key components of many optoelectronic devices (such as solar cells, light-emitting diodes, touch screens, liquid crystal displays, etc.). Currently, tin-doped indium oxide (ITO) dominates the transparent electrode market due to its high conductivity and high transmittance. However, ITO contains the scarce element indium, and with the development of the optoelectronics industry, the demand for transparent electrodes is increasing, the reserves of indium continue to decline, and the price of ITO continues to rise. Other metal oxide semiconductors, such as zin...

AI Technical Summary

Problems solved by technology

However, this method faces two problems: first, the silver nanowire network is prepared by the traditional spin-coating method, and the large-area uniformity is not good; second, the titanium dioxide sol-gel is spin-coated on the silver nanowire network, and the silver nanowire Network preparation, many process steps

In short, the existing technical methods are difficult to prepare a high-performance silver nanowire network transparent electrode with a simple method and low cost.

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