Highly transparent conductors based on the dewetting phenomenon of thin liquid film by a microliter-scale solution process
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초록
내용
We report the web-like structured silver nanowires (AgNW) bundle networks by dewetting liquid thin films to produce highly transparent electrodes. Such AgNW-web structures were formed by dewetting the thin films of AgNW suspension in a mixture of isopropyl alcohol (IPA) and ethylene glycol (EG) on hydrophobized coating substrates by using meniscus-dragging deposition (MDD) technique. Length and diameter of the AgNW bundles and the open space area in the AgNW-web network can be controlled by varying contact angle, EG concentration, and coating parameters of the MDD process. The transparent thin films with AgNW-web structures exhibit the superior optical and electrical properties compared to the electrodes with random network of AgNW. Our simple coating technique enables the deposition of AgNW-web network with high optical transparency, flexibility, and stretchability directly on rigid or plastic substrates.