Synergistic Effect\nof Ionic Liquid and Superwettability\nEnables Large-Scale Fabrication of Aligned Silver Nanowire-Based Transparent\nElectrodes

Aligned and cross-aligned silver nanowires (AgNWs) have\nemerged\nas a promising class of flexible transparent electrodes (FTEs) for\nbroad applications in flexible optoelectronic devices. However, the\nlarge-scale fabrication of aligned AgNWs remains challenging due to\nspecial setups, rigid condition control, and complex procedures. Here,\nwe show that the synergistic effect of ionic-liquid-induced localized\norientation at the air–water interface and subsequent superwettability-enhanced\norientation induced by spontaneous transfer leads to the alignment\nof AgNWs. This strategy enables the facile and scalable fabrication\nof large-area aligned AgNWs and layer-by-layer fabrication of cross-aligned\nAgNWs FTEs with sheet resistance of 11–20 Ω s<i>q</i><sup>–1</sup> and transmittance of 86%–92%\nat 550 nm. The cross-aligned AgNWs FTEs can be applied for flexible\nelectronic devices such as transparent heaters, electroluminescent\ndevices, and touch panels, exhibiting high optoelectrical performances.\nOur results shed light on exploration of large-area production of\naligned AgNWs and provide an effective approach to prepare high-performance\ncross-aligned AgNWs FTEs for a variety of flexible electronic devices.