| 초록 |
Transparent conducting electrodes is an essential and critical component in many optoelectronic devices, such as liquid-crystal display (LCD) panels, photovoltaic devices, organic light-emitting diodes (OLED), touch panels, and electrochromic windows. As a traditional transparent electrode, indium tin oxide (ITO) is utilized for a long time due to their outstanding optoelectrical performance. However, ITO is relatively expensive, brittle, and shows strong absorption in the near-IR region, which is not suitable for photovoltaic and photodetector applications. Recently, solution-processable single walled carbon nanotube (SWCNT), reduced graphene oxide (RGO), and as well as metal nanostructures have been greatly explored as alternatives for ITO and application for flexible devices, due to their high flexibility, conductivity and porous network structure. However, they have demonstrated very limited performance and applications due to the poor conductivity, instability and relatively low electrical conductivity. Here, we present a facile method for fabrication of highly stretchable and conducting Ag nanowire (AgNW) electrode by using bilayer of block copolymer and polydimethylsiloxane (PDMS) as stretchable substrate. Combining the stretchable substrate with embedded AgNWs, transparent conducting electrodes were fabricated by spray coating on top of a stretchable substrate. This strategy allowed for the large-scale production of highly stretchable and conducting metal electrode, which will provide high availability and scalability for future wearable applications. |
