Laminated transparent electrode and preparation method thereof

Abstract

The invention provides a laminated transparent electrode and a preparation method thereof. The laminated transparent electrode sequentially comprises a transparent substrate, a first-layer metal oxide film on the transparent substrate, a metal nanowire network layer on the first-layer metal oxide film, and a second-layer metal oxide film covering the metal nanowire network layer and the first-layer metal oxide film not covered by the metal nanowire network layer. A preparation method of the metal nanowire network layer comprises the steps of preparing a metal film layer on the first-layer metal oxide film, preparing a high-polymer nanofiber network on the metal film layer by using an electrostatic spinning technique, removing the metal film that is not covered by the high-polymer nanofiber network through etching by taking high-polymer nanofiber as a mask, and removing the high-polymer nanofiber network. The laminated transparent electrode has the advantages of high light transmissivity, low resistivity, firm contact with the substrate, smooth surface, low preparation and growth temperature, low cost and the like, and can be widely applied to various organic and inorganic photoelectric devices.

Description

technical field [0001] The invention belongs to the field of electrode preparation, and in particular relates to a laminated transparent electrode and a preparation method thereof. Background technique [0002] Optoelectronic devices such as touch screens, flat panel displays, and solar cells, which are widely used at present, all require transparent electrodes with good light transmission and conductivity. For transparent electrodes, surface resistance and light transmittance are the two main parameters that determine their quality and application. For example: the transparent electrode of a high-performance touch screen requires its light transmittance to be greater than 95%, but its surface resistance is allowed to be between 400Ω / □ and 600Ω / □; while solar cells and large-area displays require the surface resistance of transparent electrodes to be less than 20Ω / □. Traditional transparent electrodes mainly refer to doped metal oxides. Among them, ITO occupies more than ...

AI Technical Summary

Problems solved by technology

However, the metal nanowires dispersed on the transparent substrate through the coating process have weak adsorption to the substrate, and the connection resistance between adjacent nanowires is relatively large, which often requires additional thermal annealing or laser treatment to improve its Conductivity

[0003] To sum up: new transparent electrodes need to have high electrical conductivity and light transmittance, and should be prepared at the lowest possible cost of raw materials and processes, but the current transparent electrode materials and technologies are still unsatisfactory

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