Solid-state ionics method fabricated high aspect ratio silver nanowires: Application in transparent conductive films

摘要

Silver nanowires (AgNWs) with high aspect ratio were prepared by the solid-state ionics method using fast ionic conductor RbAg_4I_5 films under the different impressed currents and the corresponding transparent conductive films (TCFs) were prepared. The results indicate that the prepared AgNWs presented long-range order and short-range order and the average length of nanowires (NWs), which was approximately 400 urn, had no significant changes under different impressed currents. The best result of AgNWs-TCFs was the one with a transmittance of 87.3% at 550 ran accompanied with a low sheet resistance of 15.80 Ω/sq by controlling the drop-coating times, dispersant volume fraction and the impressed current intensity fixed at 2, 15% and 7 μA, respectively. The figure of merit for TCFs was 16.3, which is larger than the value of 8.8 for commercial indium tin oxide (ITO) films. These amazing results would render AgNWs-TCFs as a promising candidate to replace conventional ITO.