Method for preparing silver nanowire transparent electrode in large area and silver nanowire transparent electrode

Abstract

The invention discloses a method for preparing silver nanowire transparent electrodes at a large scale and the silver nanowire transparent electrode. The method comprises the steps of an appropriate amount of a silver nanowire solution, separating out silver nanowires and a solvent by use of a centrifuge, removing the solvent, doping the bottom silver nanowires into a photoresist, shaking until the silver nanowires are evenly dispersed into the photoresist, thereby forming a silver nanowire-photoresist suspension, evenly applying the suspension to a clean transparent substrate in a spin-coating manner to form a silver nanowire-photoresist film, immersing the transparent substrate spin-coated with the silver nanowire-photoresist film into a photoresist removing solution to remove the surface photoresist, taking out the transparent substrate, and after the solution on the surface of the transparent substrate, forming an even silver nanowire network on the transparent substrate by the left silver nanowires, namely the silver nanowire transparent electrode. The silver nanowire transparent electrode has excellent electrical conductivity, transmittance and homogeneity; the method has nothing to do with the area and the surface shape of the substrate, and also has no strict relation with the quantity of the photoresist dripped, and is high in repeatability and reliability and suitable for large-scale batch production.

Description

technical field

[0001] The invention belongs to the technical field of optoelectronics, and in particular relates to a method for preparing silver nanowire transparent electrodes in a large area. Background technique

[0002] Transparent electrode is a thin film material with high conductivity and high visible light transmittance at the same time. It is the core component of optoelectronic devices such as light-emitting diodes, solar cells, liquid crystal displays, and touch screens. At present, the most widely used transparent electrode materials are metal oxide semiconductors, such as indium tin oxide (ITO). Despite its high conductivity and high transmittance, ITO still has some inherent material property problems. First of all, the indium element in ITO is a scarce material with high price and high cost, and the indium reserves on the earth are far from meeting people's increasing demand for transparent electrodes. Secondly, metal oxide semiconductors are mostly cerami...

Images