Journal
NANOSCALE
Volume 14, Issue 43, Pages 16003-16032Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nr03990g
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Funding
- National Natural Science Foundation of China [52173192]
- National Key Research and Development Program of China [2017YFA0206600]
- Science and Technology Innovation Program of Hunan Province [2020RC4004]
- Special Funding for the Construction of Innovative Provinces in Hunan Province [2020GK2024]
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This article provides a comprehensive overview of the application of copper inks in printed electronics. It covers various aspects including ink preparation, printing methods and sintering, antioxidation strategies, and electronic applications. The review also discusses the future development and challenges of copper-based inks in printed electronics.
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.
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