Transition metal dichalcogenides based two-dimensional heterostructures for optoelectronic applications

Abstract

Among all the two-dimensional (2D) materials, the transition metal dichalcogenides (TMDCs) are the popular choice for optoelectronics applications due to its unique properties such as tunable optical band gap, strong light-matter interactions, high exciton binding energy and large specific surface area due to reduced dimensionality. Heterostructures based on these 2D TMDCs materials are at the forefront of current research due to their potential applications as a p-n junction, field-effect transistors (FETs), and photovoltaic cells. The basic process of fabrication is the stacking of one type of 2D TMDC layer on top of another in a controlled manner while keeping the interface minimal of defects. Although, all the 2D TMDCs materials exhibit potential for optoelectronics applications, however, their heterostructures shows remarkable properties that may not occur in their constituent layers. © 2020 Elsevier Inc.