Since the discovery of graphene exfoliated from bulk graphite by scotch tape, numerous unprecedented physics phenomena including superconductivity, topological insulator, Weyl semimetal, etc. have been explored fundamentally. Yet, applications to, for example, electronics, soft electronics, optoelectronics, spintronics, and valleytronics have been hindered by the limited flake sizes of a few micrometers. Furthermore, fundamental sciences and applications are often obscured from single crystal film quality. In this talk, we will discuss some of the recent progresses on crystal growth of 2D van der Waals layered materials and heterostructures. We will present some of the strategies of growing single crystal monolayer and multilayer Gr on Cu substrate, hBN, and transition metal dichalcogenides on Au substrate, and furthermore their in-plane and out-of-plane heterostructures in a wafer-scale and further some of the applications.[1-4] We will discuss several challenges to construct single crystal growth of 2D materials and heterostructures in a wafer-scale in terms of substrate, substrate orientation, vicinal surfaces, precursors, promoters etc.

Recent progresses on film growth of transition metal dichalcogenides and heterostructures

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