Zhou Haihua, Song Yanlin
Key Laboratory of Green Printing, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing Engineering Research Center of Nanomaterials for Green Printing Technology, Beijing National Laboratory for Molecular Sciences, Beijing 100190, China.
ACS Appl Mater Interfaces. 2021 Jan 27;13(3):3493-3511. doi: 10.1021/acsami.0c18518. Epub 2021 Jan 13.
With the development of flexible electronics, researchers have endeavored to improve the characteristics of the commonly used indium tin oxide such as brittleness, poor mechanical or chemical stability, and scarcity. Currently, many alternative materials have been considered such as conductive polymers, graphene, carbon nanotubes, metallic nanoparticles (NPs), nanowires (NWs), or nanofibers. Among them, silver (Ag) mesh/grid NPs or NWs have been considered as an excellent substitute due to the good transmittance, excellent electrical conductivity, outstanding mechanical robustness, and cost competitiveness. So far, much effort has been devoted to the fabrication of Ag mesh/grid, and many methods such as printing technology, self-assembly, electrospun, hot-pressing, and atomic layer deposition have been reported. Here printing technologies include jet printing, gravure printing, screen printing, nanoimprint lithography, microcontact printing, and flexographic printing. The solution-based self-assembly usually combines with coating, template, or mask assistance. This review summarizes the characteristics of these fabrication methods for the Ag mesh/grid with its related applications in electronics. Then the prospect and challenges of the fabrication methods are discussed, and the new preparation approaches and applications of the Ag mesh/grid are highlighted, which will be of significance for the applications in electronics such as transparent conducting electrodes, organic light-emitting diode, energy harvester, strain sensor, cells, etc.
随着柔性电子学的发展，研究人员一直致力于改善常用的氧化铟锡的特性，如脆性、较差的机械或化学稳定性以及稀缺性。目前，已经考虑了许多替代材料，如导电聚合物、石墨烯、碳纳米管、金属纳米颗粒（NPs）、纳米线（NWs）或纳米纤维。其中，银（Ag）网格/栅格纳米颗粒或纳米线由于具有良好的透光率、优异的导电性、出色的机械强度和成本竞争力，被认为是一种优秀的替代品。到目前为止，人们在银网格/栅格的制备方面投入了大量精力，并且已经报道了许多方法，如印刷技术、自组装、电纺、热压和原子层沉积。这里的印刷技术包括喷射印刷、凹版印刷、丝网印刷、纳米压印光刻、微接触印刷和柔性版印刷。基于溶液的自组装通常与涂层、模板或掩膜辅助相结合。本文综述了这些银网格/栅格制备方法的特点及其在电子领域的相关应用。然后讨论了制备方法的前景和挑战，并强调了银网格/栅格的新制备方法和应用，这对于其在透明导电电极、有机发光二极管、能量收集器、应变传感器、电池等电子领域的应用具有重要意义。
