Electronic Structure, Optical Properties, and Potential Applications of n-BN/WS2 (n = 1 to 4) Heterostructures

In contrast to bulk semiconductors, the bandgap of two-dimensional (2D) transition-metal dichalcogenide monolayers is strongly dependent on the dielectric environment. The optical properties of these 2D materials can also be significantly modified by substrate screening. We report herein the structural, electronic, and optical properties of n-BN/WS2 heterostructures consisting of a WS2 monolayer on top of n layers of BN substrates (n = 1 to 4)...