Localized Excitons in NbSe₂-MoSe₂ Heterostructures.

ABSTRACT: Neutral and charged excitons (trions) in atomically thin materials offer important capabilities for photonics, from ultrafast photodetectors to highly efficient light-emitting diodes and lasers. Recent studies of van der Waals (vdW) heterostructures comprised of dissimilar monolayer materials have uncovered a wealth of optical phenomena that are predominantly governed by interlayer interactions. Here, we examine the optical properties in NbSe₂-MoSe₂ vdW heterostructures, which provide an important model system to study metal-semiconductor interfaces, a common element in optoelectronics. Through low-temperature photoluminescence (PL) microscopy, we discover a sharp emission feature, L1, that is localized at the NbSe₂-capped regions of MoSe₂. L1 is

SUBMITTER: Joshi J 

PROVIDER: S-EPMC8171581 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature