Jiwoong Park1
University of Chicago1
Two dimensional (2D) electron transport has been one of the most important topics in science and technology for decades. It was originally studied in 3D semiconductors and then continued in 2D van der Waals (vdW) crystals. In this talk, I will start with the large-scale processes for generating 2D crystalline semiconductor transition metal dichalcogenide (TMD) films and superlattices that could be used to fabricate atomically thin integrated circuits cleanly. These large scale TMD films also display novel optical properties depending on the geometry of the film itself and on the geometry of the incident light. I will discuss two examples. First, TMD films grown with nanoscale textures produce optically isotropic films with strongly enhanced absorption. Second, TMD monolayers can be used to form three-atom-thick waveguides with a long (~ 1 cm) propagation length that can be used to generate a novel 2D photonics platform.