Zeng Xianghui, He Pei, Hu Minglu, Zhao Weikai, Chen Huitong, Liu Longhui, Sun Jia, Yang Junliang
Hunan Key Laboratory for Super-Microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, 410083, Hunan, People's Republic of China.
Nanoscale. 2022 Nov 10;14(43):16003-16032. doi: 10.1039/d2nr03990g.
Conductive inks have attracted tremendous attention owing to their adaptability and the convenient large-scale fabrication. As a new type of conductive ink, copper-based ink is considered to be one of the best candidate materials for the conductive layer in flexible printed electronics owing to its high conductivity and low price, and suitability for large-scale manufacturing processes. Recently, tremendous progress has been made in the preparation of cooper-based inks for electronic applications, but the antioxidation ability of copper-based nanomaterials within inks or films, that is, long-term reliability upon exposure to water and oxygen, still needs more exploration. In this review, we present a comprehensive overview of copper inks for printed electronics from ink preparation, printing methods and sintering, to antioxidation strategies and electronic applications. The review begins with an overview of the development of copper inks, followed by a demonstration of various preparation methods for copper inks. Then, the diverse printing techniques and post-annealing strategies used to fabricate conductive copper patterns are discussed. In addition, antioxidation strategies utilized to stabilize the mechanical and electrical properties of copper nanomaterials are summarized. Then the diverse applications of copper inks for electronic devices, such as transparent conductive electrodes, sensors, optoelectronic devices, and thin-film transistors, are discussed. Finally, the future development of copper-based inks and the challenges of their application in printed electronics are discussed.
由于其适应性和便捷的大规模制造工艺，导电油墨已引起了极大关注。作为一种新型导电油墨，铜基油墨因其高导电性、低价格以及适用于大规模制造工艺，被认为是柔性印刷电子中导电层的最佳候选材料之一。最近，在用于电子应用的铜基油墨制备方面取得了巨大进展，但油墨或薄膜中铜基纳米材料的抗氧化能力，即在暴露于水和氧气时的长期可靠性，仍需要更多探索。在这篇综述中，我们全面概述了用于印刷电子的铜油墨，涵盖从油墨制备、印刷方法和烧结，到抗氧化策略及电子应用等方面。综述首先概述了铜油墨的发展，接着展示了铜油墨的各种制备方法。然后，讨论了用于制造导电铜图案的多种印刷技术和退火后处理策略。此外，总结了用于稳定铜纳米材料机械和电学性能的抗氧化策略。随后讨论了铜油墨在电子器件中的各种应用，如透明导电电极、传感器、光电器件和薄膜晶体管。最后，讨论了铜基油墨的未来发展及其在印刷电子应用中的挑战。
