Water-Based and Defect-Free 2D Material Inks for Printed and Wearable Electronics

Our group has developed highly concentrated, defect-free, printable and water-based 2D crystal formulations, designed to provide optimal film formation for multi-stack fabrication [1]. I will give examples of all-inkjet printed heterostructures, such as large area arrays of photosensors on plastic [1], programmable logic memory devices [1], capacitors [2], and transistors on paper [2,3]. Furthermore, inkjet printing can be easily combined with materials produced by chemical vapor deposition, allowing simple and quick fabrication of complex circuits on paper, such as high-gain inverters, logic gates, and current mirrors [4]. This technology can be sucesfully extended to CMOS [5]. Examples of wereable sensors and visco-elastic electrodes made with our inks will also be provided [6-8].<br/>[1] McManus et al, Nature Nano, 12, 343 (2017)<br/>[2] Worsley et al, ACS Nano, 2018, DOI: 10.1021/acsnano.8b06464<br/>[3] Lu et al, ACS Nano, ACS Nano, 13, 11263 (2019)<br/>[4] Conti et al, Nature comms, 11 (1), 1-9 (2020)<br/>[5] Brunetti et al, NPJ 2D Materials, just accepted<br/>[6] Worsley et al, under review<br/>[7] Chen et al, under review<br/>[8] Tringides et al, Nature Nano, 2021 doi.org/10.1038/s41565-021-00926-z