Van der Waals (vdW) heterostructures based on transition metal dichalcogenides (TMDs)
generally possess a type-II band alignment that facilitates the formation of interlayer excitons …

Since the isolation of graphene in 2004, two-dimensional (2D) materials research has
rapidly evolved into an entire subdiscipline in the physical sciences with a wide range of …

Stacking monolayers of transition metal dichalcogenides into a heterostructure with a finite
twist-angle gives rise to artificial moiré superlattices with a tunable periodicity. As a …

Atomically thin semiconductors such as transition metal dichalcogenide (TMD) monolayers
exhibit a very strong Coulomb interaction, giving rise to a rich exciton landscape. This makes …

Second-harmonic generation (SHG) is a non-linear optical process, where two photons
coherently combine into one photon of twice their energy. Efficient SHG occurs for crystals …

Van der Waals heterojunctions of two-dimensional transition-metal dichalcogenides are
intensely investigated for multiple optoelectronics applications. Strong and adjustable …

We report on the spatial coherence of interlayer exciton ensembles as formed in MoSe
2/WSe 2 heterostructures and characterized by point-inversion Michelson-Morley …

Atomistic van der Waals heterostacks are ideal systems for high-temperature exciton
condensation because of large exciton binding energies and long lifetimes. Charge …

We report on the far-field photoluminescence intensity distribution of interlayer excitons in
MoSe 2− WSe 2 heterostacks as measured by back focal plane imaging in the temperature …

Recent advances in the field of vertically stacked 2D materials have revealed a rich exciton
landscape. In particular, it has been demonstrated that out-of-plane electrical fields can be …