Transparent and Flexible Electromagnetic Interference Shielding Film Using ITO Nanobranches by Internal Scattering
Young Ho Kim, Seok‐Ki Hyeong, Yeunji Choi, Seoung‐Ki Lee, Jae‐Hyun Lee, Hak Ki Yu
Abstract
bands, 8-18 GHz) is prepared. The electromagnetic wave shielding film is fabricated using the excellent transmittance, electrical conductivity, and thermal stability of indium tin oxide (ITO), a representative transparent conductive oxide. The inherent mechanical brittleness of oxide ceramics is overcome by adopting a nanobranched structure. In addition, mechanical stability is maintained even after repeated bending experiments (200 000 times). The produced transparent and flexible shielding film is applied to practical GHz devices (Wi-Fi and LTE devices), and signal sensitivity is confirmed to decrease. Therefore, it can be widely applied to various transparent and flexible electronic devices.