21 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…
Perfect Absorption in the Strong Coupling Regime via Degenerate Critical Coupling
Eleonora P. Kraus, Jamie M. Fitzgerald, Carlos Maciel-Escudero +1
Perfect absorption (PA) represents a fundamental limit of light-matter interaction and a means to maximize nanoscale energy conversion. While PA is now a well-established phenomeno…
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…
Engineering strong coupling in ultra-compact photonic crystal/2D material platforms
Eleonora P. Kraus, Jamie M. Fitzgerald, Carlos Maciel-Escudero +1
Sub-wavelength thick photonic crystal (PhC) slabs coupled to 2D excitonic materials, such as transition metal dichalcogenides (TMDs), are a promising platform for highly tunable, r…