Water-Based 2D Material Inks for Printed Electronics

Solution processing of 2D materials allows simple and low-cost techniques, such as ink-jet printing, to be used for fabrication of heterostructure-based devices of arbitrary complexity. Our group has developed highly concentrated, defect-free, inkjet printable and water-based 2D crystal formulations, by exploiting non-covalent functionalization of 2D materials with pyrene derivatives [1]. Examples of printed heterostructures, containing Chalcogenide inks, such as arrays of photosensors, programmable logic memories, amd memristors will be discussed [2-3]. Furthermore, inkjet printing can be easily combined with Chalcogenide materials produced by chemical vapor deposition, allowing simple and quick fabrication of complex circuits on paper, compatible with CMOS technology [4-5].<br/><br/>[1] Xu et al, Nanoscale 13, 460 (2021)<br/>[2] McManus et al, Nature Nano, 12, 343 (2017)<br/>[3] Peng et al, in preparation<br/>[4] Conti et al, Nature comms, 11 (1), 1-9 (2020)<br/>[5] Brunetti et al, npj 2D Materials and Applications 5, 1-6 (2021)