Solution‐Processed 2D Molecular Crystals: Fabrication Techniques, Transistor Applications, and Physics

Abstract Based on intensive research, organic field‐effect transistors (OFETs) will likely remain at the zenith in information science for many years due to their numerous potential applications in portable and smart electronic devices. Elucidating the intrinsic charge‐transport behavior and realizing functional OFETs with superior device characteristics have been the cornerstones for the sustainable advancement in organic electronics. The emerging 2D molecular crystals (2DMCs) have become prosperous in the past few years, because they offer a revolutionary opportunity to overcome these obstacles. In particular, 2DMCs, which display a high uniform morphology, can be prepared using low‐cost and scalable solution‐based techniques. More importantly, their highly tunable molecular arrangement at a 2D limit is extraordinarily beneficial in property exploration and device optimization. In this article, the recent breakthroughs in material preparation, transistor applications, and physics of solution‐processed 2DMCs are reviewed, providing a promising avenue toward high‐performance, multifunctional, and diversiform organic electronic devices.