Interfacial Charge Transfer and Ultrafast Photonics Application of 2D Graphene/InSe Heterostructure.

ABSTRACT: Interface interactions in 2D vertically stacked heterostructures play an important role in optoelectronic applications, and photodetectors based on graphene/InSe heterostructures show promising performance nowadays. However, nonlinear optical property studies based on the graphene/InSe heterostructure are insufficient. Here, we fabricated a graphene/InSe heterostructure by mechanical exfoliation and investigated the optically induced charge transfer between graphene/InSe heterostructures by taking photoluminescence and pump-probe measurements. The large built-in electric field at the interface was confirmed by Kelvin probe force microscopy. Furthermore, due to the efficient interfacial carrier transfer driven by the built-in electric potential (~286 meV) and broadband nonlinear absorption,

SUBMITTER: Li J 

PROVIDER: S-EPMC9824543 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature