Size-Optimized Silver Nanowires with Graphene Oxide for High-Performance Transparent Electrodes

Silver nanowires (AgNWs)-based transparent electrode is one critical component for many modern electronic devices, however, preparation of high-performance AgNWs-based transparent electrode with appealing light transmittance and long-term stability is still challenging. Herein, by combining the size-optimized AgNWs with graphene oxide (GO), the composite AgNWs/GO film electrode with high light-transmittance and appealing stability is prepared. For the size-controlled preparation of AgNWs, well-defined one-dimensional structure (average diameter = 62 nm) is obtained by elaborately adjusting the Br− concentration (0.05 mM), Cl− concentration (1 mM), ratio of PVP/AgNO3 (5:1) and PVP-type selection (PVP1300k: PVP58k = 2:1), contributing to a high light transmittance of 84% for the corresponding AgNWs-based electrode. After further introducing the GO, the film electrode presents much enhanced stability and increased film-substrate adhesive strength, namely only 3.6% increase in resistance after 1000 cycles of bending and being stable even under ultrasonic vibration. The results can provide new insights for designing electrode with ultrastability and high light transmittance.