High-performance visible-infrared broadband transparent copper mesh conductor and applications for electromagnetic shielding and heating

IF 6.8 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Science China Materials Pub Date : 2025-01-02 DOI:10.1007/s40843-024-3186-7

Tengfei Li (, ), Xiaolian Chen (, ), Zhaohua Xu (, ), Shuhong Nie (, ), Wenya Xu (, ), Wei Yuan (, ), Su Xu (, ), Shuo Zhang (, ), Fangfang Pei (, ), Wenming Su (, ), Zheng Cui (, )

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引用次数: 0

Abstract

Transparent conductors (TCs) have widespread applications in the fields of modern photodetectors and smart windows. While TCs for visible wavelengths have seen significant advancements, the development of visible-infrared (vis-IR) broadband TCs for infrared is still a daunting challenge due to the trade-off between infrared transparency and conductivity. Here, we present a vis-IR TC fabricated by using a damage-free indirect transfer method. This method involves polymer-mediated bonding of a high-resolution, standalone copper (Cu) mesh onto infrared or visible substrates via a transfer film. The obtained Cu mesh TC exhibits excellent conductivity with a sheet resistance as low as 0.06 Ω/□, as well as 81% transmittance at a visible wavelength of 550 nm and 65% transmittance at an IR wavelength of 10 µm. Furthermore, a specially developed bonding strategy ensures the long-term reliability of the Cu mesh TC in harsh environments. The Cu mesh TC can be applied in both heating and electromagnetic (EM) shielding. As a transparent heater, it reaches approximately 100°C at an applied voltage of 1.2 V within 100 s. For EM shielding, a demonstration using a stainless-steel box with a transparent observation window which is integrated with the Cu mesh shows that while the window allows both optical and IR observations, the 4G signals (8.2 GHz) of a smartphone inside the box are effectively blocked.

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来源期刊

Science China Materials Materials Science-General Materials Science

CiteScore

11.40

自引率

7.40%

发文量

949

期刊介绍： Science China Materials (SCM) is a globally peer-reviewed journal that covers all facets of materials science. It is supervised by the Chinese Academy of Sciences and co-sponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China. The journal is jointly published monthly in both printed and electronic forms by Science China Press and Springer. The aim of SCM is to encourage communication of high-quality, innovative research results at the cutting-edge interface of materials science with chemistry, physics, biology, and engineering. It focuses on breakthroughs from around the world and aims to become a world-leading academic journal for materials science.