Silver\nMeshes for Record-Performance Transparent Electromagnetic\nInterference Shielding

Abstract

We present a simulation\nand experimental study of silver meshes\nto determine their performance for transparent electromagnetic interference\n(EMI) shielding. Simulations were employed to study the effects of\nthe silver mesh’s width, pitch, and thickness on EMI shielding\nefficiency (SE) in the 8–18 GHz frequency range and transparency\nin the visible spectrum. We demonstrate a scalable, facile fabrication\nmethod that involves embedding meshes in glass by etching trenches\nin glass and filling and curing reactive particle-free silver ink\nin these trenches. Our silver meshes achieve 58.4 dB EMI SE with 83%\nvisible light transmission and 48.3 dB EMI SE with 90.3% visible transmission.\nThe combination of high-conductivity silver, small widths (1.3 to\n5 μm), and large thicknesses (0.5 to 2.0 μm) enables the\nbest performance of metal meshes as well as single-sided shielding\nmaterials for transparent EMI shielding, as reported in the literature.