SurfaceScience21 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 67: Poster Session V: Ultrafast electron dynamics at surface and interfaces I
O 67.4: Poster
Mittwoch, 3. März 2021, 10:30–12:30, P
Ultrafast laser-induced electronic dynamics of perylene@MoSe2 monolayer — •Matheus Jacobs1, Jannis Krumland1, and Caterina Cocchi1,2 — 1Institut für Physik und IRIS Adlershof, Humboldt-Universität zu Berlin, Berlin, Germany — 2Carl von Ossietzky Universität Oldenburg Institut für Physik, Oldenburg, Germany
Hybrid interfaces formed by atomically thin semiconductors, such as transition-metal dichalcogenides, and physisorbed organic molecules have received considerable attention in the last years due to their potential for opto-electronic applications. In particular, interfacial charge transfer in the earliest stage of the photoexcitation plays a crucial role in the electronic and optical response of these systems1. Therefore, it is of great relevance to gain insight into the dynamics of the involved processes. In the framework of real-time time-dependent density functional theory, we investigate the ultrafast electronic dynamics at the interfaced formed by perylene physisorbed on a MoSe2 monolayer. We monitor the evolution of the electrons in k-space when the hybrid system is excited by a resonant time-dependent electric field. Our results provide a valuable starting point to explore further relevant effects, such as vibronic coupling.
[1] M. Jacobs et. al., Advances in Physics: X 5, 1749883(2020)