Flexible, Transparent, and Conductive Film Based on Random Networks of Ag Nanowires

Abstract

Flexible, transparent, and conductive films based on random networks of Ag nanowires were prepared by vacuum‐filtrating method. The size of Ag nanowires prepared by hydrothermal method is uniform, with a relatively smaller diameter and a longer length, thereby achieving a high aspect ratio (>1000). The films fabricated by Ag nanowires exhibit the excellent transparency with a 92% optical transmittance and a low surface resistivity of 11 Ωsq −1 . Importantly, both the transmittance and sheet resistance decrease with the increasing of the Ag nanowires contents. When the contents of Ag nanowires are up to 200 mg/m 2 especially, the surface resistivity quickly falls below 5 Ωsq −1 . Also, these films are robust, which have almost no change in sheet resistance after the repeating bends over 200 cycles. These encouraging results may have a potential application in flexible and transparent electronics and other heating systems.