From two-dimensional materials to 2.5-dimensional materials science

Abstract

We introduce our recent research on two-dimensional materials based on our new concept of “2.5-dimensional materials science”. In particular, our work on the controlled CVD growth of bilayer graphene and the successive intercalation of metal chloride molecules, multilayer hBN growth and application to the insulating substrate of other two-dimensional materials, and molecular doping in monolayer WSe₂ for p- and n-type semiconductor device applications, are reviewed. The concept of 2.5-dimensional materials will open a new research field enriched with fascinating properties and promising applications.