Zhang Yi-Song, Wang Tao, Bao Ze-Long, Qian Peng-Fei, Liu Xuan-Chen, Geng Wen-Hao, Zhang Di, Wang Shi-Wei, Zhu Qingxia, Geng Hong-Zhang
Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tiangong University, Tianjin 300387, China.
Faculty of Engineering, China University of Petroleum-Beijing at Karamay, Karamay 834000, China.
J Colloid Interface Sci. 2024 Jul;665:376-388. doi: 10.1016/j.jcis.2024.03.120. Epub 2024 Mar 19.
With the popularization of 5G technology and the development of science and technology, flexible and transparent conductive films (TCF) are increasingly used in the preparation of optoelectronic devices such as electromagnetic shielding devices, transparent flexible heaters, and solar cells. Silver nanowires (AgNW) are considered the best material for replacing indium tin oxide to prepare TCFs due to their excellent comprehensive properties. However, the loose overlap between AgNWs is a significant reason for the high resistance. This article investigates a sandwich structured conductive network composed of AgNW and TiCT MXene for high-performance EMI shielding and transparent electrical heaters. Polyethylene pyrrolidone (PVP) solution was used to hydrophilic modify PET substrate, and then MXene, AgNW, and MXene were assembled layer by layer using spin coating method to form a TCF with a sandwich structure. One-dimensional AgNW is used to provide electron transfer channels and improve light penetration, while two-dimensional MXene nanosheets are used for welding AgNWs and adding additional conductive channels. The flexible TCF has excellent transmittance (85.1 % at 550 nm) and EMI shielding efficiency (27.1 dB). At the voltage of 5 V, the TCF used as a heater can reach 85.6 °C. This work offers an innovative approach to creating TCFs for the future generation.
随着5G技术的普及和科技的发展，柔性透明导电薄膜（TCF）越来越多地用于制备电磁屏蔽装置、透明柔性加热器和太阳能电池等光电器件。由于具有优异的综合性能，银纳米线（AgNW）被认为是替代氧化铟锡制备TCF的最佳材料。然而，AgNW之间松散的重叠是导致高电阻的一个重要原因。本文研究了一种由AgNW和TiCT MXene组成的三明治结构导电网络，用于高性能电磁干扰屏蔽和透明电加热器。使用聚乙烯吡咯烷酮（PVP）溶液对PET基板进行亲水性改性，然后采用旋涂法将MXene、AgNW和MXene逐层组装，形成具有三明治结构的TCF。一维AgNW用于提供电子转移通道并提高光穿透率，而二维MXene纳米片用于焊接AgNW并增加额外的导电通道。这种柔性TCF具有优异的透过率（在550nm处为85.1%）和电磁干扰屏蔽效率（27.1dB）。在5V电压下，用作加热器的TCF可达到85.6°C。这项工作为未来一代创造TCF提供了一种创新方法。
