Highly conductive and stretchable film fabricated by efficient transfer of silver nanowires

Abstract

Wearable devices have become an important development direction for future consumer electronics, and films with conductivity, stretchability, and transparency are crucial for achieving wearability. In this article, silver nanowires (AgNWs) with a certain aspect ratio and Al2O3-polyethylene terephthalate films with specific size pit structures were prepared. Uniform coating of the AgNW layer and polydimethylsiloxane transfer were successfully realized. The surface resistance of the final obtained film was 14 Ω/sq with a light transmittance of 50.57%. During repeated deformations, the film conductivity was not significantly reduced, and excellent electrical conductivity was maintained. A relatively complicated flexible AgNW circuit was prepared by adding a patterned mask in the scrape-coating step. This is a low-cost method and can be used to form large films. The final product has excellent conductivity and some transparency and can provide new research directions for flexible electronic devices.