Optoelectronic properties and applications of graphene-based hybrid nanomaterials and van der Waals heterostructures

In this paper, we review the optoelectronic properties and applications of graphene and graphene heterostructures in recent years. Graphene is a 2D crystal with a single atomic layer thickness consisting of sp(2) hybridized conjugated carbon atoms. Graphene's unique optical and electrical properties have led to its further development in the field of nanoscale optoelectronics. Graphene has extremely high carrier mobility and a wide range of photoelectric response characteristics in conventional semiconductor optoelectronic devices, such as silicon and GaAs. By changing the shape of a graphene structure and combining it with other nanomaterials, nano-optoelectronic devices based on graphene have greatly improved performance. Optoelectronic devices based on graphene have broad application prospects. (C) 2019 Elsevier Ltd. All rights reserved.