Silver nanowire etching method, transparent conductive electrode and preparation method thereof

Abstract

The invention provides a transparent conductive electrode, which comprises a substrate and an electrode layer positioned on the substrate, wherein the electrode layer comprises a first region and a second region, wherein the first region is provided with a plurality of interconnected silver nanowires; the second region is provided with a plurality of cut silver nanowires, and the distance betweentwo adjacent silver nanowires in the cut silver nanowires is not more than 1000nm. According to the transparent conductive electrode, the silver nanowires in the second region are cut off, an effective conductive network cannot be formed, and the electrical difference between the first region and the second region is large; the distance between two adjacent sections of the silver nanowires is notmore than 1000nm, the etching mark of the silver nanowires is shallow, the optical property difference between the first region and the second region is small, the visual difference on the appearanceis very small, and the appearance of the display screen prepared by the silver nanowires is basically consistent.

Description

technical field [0001] The invention relates to the field of preparation of transparent conductive electrodes, in particular to a nano-silver etching method with shallow etching marks, a transparent conductive electrode and a preparation method thereof. Background technique [0002] In the fields of touch screens, optoelectronics, and display screens, transparent conductive films are mainly made of metal oxides, such as indium tin oxide (ITO) materials. However, the ITO conductive film needs to be prepared by vacuum physical deposition and high-temperature annealing process, so there is a disadvantage of high square resistance when preparing a conductive film based on a polymer film. In addition, because ITO materials are easily broken and damaged under bending and external force, it is also difficult to apply to flexible devices. [0003] At present, a product that can replace ITO film as a transparent conductive electrode material is silver nanowire conductive film. Silve...

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Problems solved by technology

It is also possible that the silver nanowires are directly oxidized into silver ions, resulting in a decrease in the density of the silver nanowires or thinning of the wires.

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