公开(公告)号：US20250071961A1

公开(公告)日：2025-02-27

申请号：US18796801

申请日：2024-08-07

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Yong-Duck CHUNG ,  Woo Jung Lee ,  Daehyung Cho ,  Tae-Ha Hwang

IPC: H05K9/00

Abstract: Provided is an electromagnetic wave absorption device. The electromagnetic wave absorption device includes a substrate and an electromagnetic wave absorption layer on the substrate. The electromagnetic wave absorption layer contains a chalcogenide material. The electromagnetic wave absorption layer contains Bi, Sb, Bi2Se3, Bi2Te3, Sb2Te3, Bi1-xSbx, Bi1.1Sb0.9Te2S, or (Bi,Sb)2(Se,Te,S)3. The electromagnetic wave absorption layer is on an entire surface of an upper surface of the substrate.