Flexible transparent Ag NW micromesh electrode with enhanced electrical and thermal properties for multifunctional smart panel applications

Abstract

With the advent of next-generation smart panels, it is highly desirable to integrate multiple functions for application in intelligent buildings, human–machine interfaces, art exhibitions, etc. To this end, high-performance flexible transparent conducting films are vital components of this integration system. As the most anticipated candidate, Ag nanowire (Ag NW) conductors possess unique photoelectric and mechanical properties; however, inhomogeneous distribution and random stacking in nanowires cause poor sheet resistance distribution and inferior electrical/thermal stabilities. Inspired by the coffee-ring effect, an ordered Ag NW micromesh (Ag NM) conductor is prepared using a facile templateless spray strategy, which exhibits low sheet resistance variation (∼3.2%), enhancing electrical and thermal stabilities due to a uniform nanowire pattern and reduced hotspot number. As a proof of concept, touch screen, thermochromic and polymer dispersed liquid crystal (PDLC) display functions are achieved in the smart Ag NM panel, along with electrical heating, electromagnetic interference (EMI) shielding, and capacitive sensing functions, demonstrating an ideal platform for the development of future intelligent electronics.