9 papers
Strain engineering of transient exciton diffusion in WSe2 monolayers at cryogenic temperatures
Roberto Rosati, Mohammed Adel Aly Nouh, Robert Schmidt +2
Tungsten-based transition metal dichalcogenides exhibit dark excitons as the energetically lowest states. These are crucial for exciton thermalization and propagation and they domi…
Coulomb-mediated interactions of charge-transfer excitons in TMD lateral heterostructures
Kabyashree Sonowal, Daniel Erkensten, Ermin Malic +1
Lateral heterostructures of transition-metal dichalcogenides (TMDs) host spatially separated charge-transfer (CT) excitons. While analogous to interlayer excitons in vertical TMD h…
Nonequilibrium transport in epitaxial CsPbBr3 single crystals
Seryio Saris, Roberto Rosati, Vladimir Bruevich +5
Transport of optically excited carriers in semiconductors is typically described within a quasi-equilibrium picture, where energy is carried by a single thermalized quasiparticle p…
Valley-controlled many-body exciton interactions in monolayer WSe phototransistors
Daniel Vaquero, Cédric A. Cordero-Silis, Daniel Erkensten +6
Many-body exciton interactions shape the optoelectronic response of atomically-thin transition metal dichalcogenides, yet optical control of these interactions remains largely unex…
2D Excitonics with Atomically Thin Lateral Heterostructures
S. Shradha, R. Rosati, H. Lamsaadi +18
Semiconducting transition metal dichalcogenides (TMDs), such as MoSe and WSe, exhibit unique optical and electronic properties. Vertical stacking of layers of one or more T…
Polariton transport in 2D semiconductors: Phonon-mediated transitions between ballistic, superdiffusive and exciton-limited regimes
Jamie M. Fitzgerald, Roberto Rosati, Ermin Malic
Exciton transport in 2D semiconductors holds promise for room-temperature, ultra-compact optoelectronic devices, but it is limited by short propagation distances. Hybridization of…