A water-based silver nanowire ink for large-scale flexible transparent conductive films and touch screens

Abstract

A water-based AgNW ink for large-scale flexible transparent conductive films was developed via a systematic research procedure.

Fused silver nanowires with silica sol nanoparticles for smooth, flexible, electrically conductive and highly stable transparent electrodes

“…According to the Young equation, 45 if the surface tension of the ink is higher than that of the substrate, the ink will have bad wettability with the substrate, which means that when the ink is put on the substrate, it will maintain a globular morphology that brings about very bad uniformity. 46 To solve this problem and ensure that the ink has good wettability, that is, that the ink can spread over the substrate, it is necessary to adjust the ink to make its surface tension lower than that of the substrate. Zonyl FSO-100, 46,47 used as an efficient liquid uorocarbon surfactant, can adjust the surface tension of the ink.…”

“…41 Two methods are most commonly used to prevent the nanomaterials' aggregation: the steric effect and electrostatic repulsion. 46 The steric effect is usually introduced using polymers, but these can easily adhere to the material surface and result in high sheet resistance of AgNWs based TCEs. Thus, in this ink, we adjusted the electrostatic repulsion between AgNWs with the addition of aqueous ammonia to the ink, leading to the fabrication of a composite ink with higher stability, even aer storing for several months.…”

“…Therefore, high-quality inks usually contain many additives to allow ne adjustment of these dynamic processes. 46 In this study, AgNWs inks are prepared with the following starting materials: AgNWs, silica sol, HPMC, Zonyl FSO-100, aqueous ammonia and ultrapure water. Among these additives, water soluble and eco-friendly HPMC is used as the viscosity modier and lm-forming agent for AgNW inks.…”

An efficient polymer for producing electrospun transparent conducting films through simple procedures and a mild post-process

“…Therefore, factors that could modify the pH of the electrospinning solution could also be utilized to stabilize the AgNWs. According to our previous study, 27 2-amino-2-methyl-1-propanol (AMP) was used an efficient pH modier (alkalinity). Hence, in this study, AMP was chosen to adjust the surface charge of the AgNWs.…”

“…This had been veried by our previous study. 27 The increase in pH could make the surface of the AgNWs have a more negative charge, which would bring about a higher zeta potential. In contrast, the increase in conductivity could compress the electric double layer, which would decrease the zeta potential.…”