期刊
ACS APPLIED NANO MATERIALS
卷 3, 期 8, 页码 7474-7481出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.0c01076
关键词
graphene/nickel mesh; EMI shielding films; anticorrosive conductors; graphene transparent conductors; low vacuum annealing
资金
- Ministry of Science and Technology (MOST) of the Republic of China (Taiwan) [MOST 104-2112-M-194-002-MY3, MOST 107-2112-M-194-011-MY3]
In this work, we present efficient, robust, and transparent electromagnetic interference (EMI) shielding by a hybrid material comprised of a nickel (Ni) mesh and a conformal graphene coating. We demonstrate that a 20 nm-thick graphene/Ni hybrid mesh can provide EMI shielding effectiveness (SE) exceeding 12.1 dB (similar to 93.6% power attenuation) in the decimeter band while retaining a high visible transmittance of similar to 83%. Its maximum achieved SE value was 26.6 dB (similar to 99.5% power attenuation) at 0.75 GHz. Furthermore, the thicker Ni mesh exhibited a higher EMI SE. Compared to a conventional Ni mesh, the hybrid mesh exhibits a higher SE and a greatly improved corrosion resistance. The graphene coating is directly grown on a Ni mesh via rapid annealing of solid carbon precursors under low vacuum. Scalable fabrication of the mesh was achieved by a self-formed TiO2 crack network template. Our results not only provide a promising material for high-performance EMI shielding in optoelectronics devices but also enable applications of EMI shielding in harsh environments.
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