Coupled Ag nanocrystal-based transparent mesh electrodes for transparent and flexible electro-magnetic interference shielding films

Abstract

Abstract In this study, we developed a fabrication method of conductive and transparent Ag mesh electrodes on flexible polymer film at temperatures lower than 100\u202f°C. Random patterned Ag mesh film was fabricated on a flexible PET substrate over 15\u202f×\u202f15\u202fcm 2 by a self-assembly process. It became conductive by a coupling process at low temperatures. The coupled Ag mesh film showed more than 88% transmittance in visible wavelength and less than 8.2\u202fΩ\u202fsq −1 in sheet resistance with figure of merit (FoM) value of 350. This transparent flexible EMI shield film fabricated with a coupled Ag mesh pattern showed high EM shielding effectiveness of −23\u202fdB\u202fat 1.5–10\u202fGHz frequency with a high transparency of 88%.