Ultrasonic-sprayed Graphene Oxide and Air-sprayed Silver Nanowire for the Preparation of Flexible Transparent Conductive Films

Abstract Simple solution spray coating of graphene oxide (GO) and Ag nanowires (AgNWs) was employed to prepare transparent conductive films (TCFs). We used air and ultrasonic spraying, and the effects of different spraying methods on the properties of TCFs were investigated. Ultrasonic spraying exhibited a significant decrease in the length of AgNWs and increase of sheet resistance. Thin two-dimensional reduced graphene oxide (rGO) prepared by ultrasonic spraying with tightly bound conductive Ag nanowires prepared by air spraying effectively decreased the sheet resistance and increased the transparency of the hybrid films. Air-sprayed rGO (0.25 mL)–AgNW (0.45 mL)/poly(methyl methacrylate) exhibited a sheet resistance of 328 Ω/; however, the ultrasonic-sprayed rGO (0.25 mL)–air-sprayed AgNW (0.45 mL) on a poly(methyl methacrylate) showed a significant improvement of sheet resistance to 86 Ω/ with a light transmittance of 78%. The sprayed rGO–AgNW showed little change in sheet resistance after 200 bending cycles with a radius curvature of 10 mm.