Electromagnetic interference shielding performance enhancement of stretchable transparent conducting silver nanowire networks with graphene encapsulation

Silver nanowire (AgNW) networks are promising transparent conducting materials for electromagnetic interference (EMI) shielding and diverse optoelectronic devices. However, the poor contact between adjacent AgNWs leads to low electrical conductivity weak mechanical stability of AgNW networks, which limiting practical application these electronics. Here, we report an efficient strategy improve overall performance in sandwiched two layers graphene films. The films overlapped bridge discrete thus increase graphene/AgNWs/graphene (GAG) Microwave permittivity measurements together with mechanism analyses reveal that can enhance EMI effectiveness through offering extra conduction loss, multiple dielectric polarization centers multi-reflection processes. As a result, GAG film average transmittance 88% exhibits sheet resistance lower than 15 Ω sq−1 31 dB (in frequency range 8.2–12.4 GHz) after repeated stretching release at strain 40%. Such total is superior most as-reported conductors. therefore show potential age Internet Things radiation pollutions everywhere.