Radiative suppression of exciton-exciton annihilation in a two-dimensional semiconductor

Luca Sortino, Merve Giilmiis, Benjamin Tilmann, Leonardo de S. Menezes, Stefan A. Maier

Research output: Contribution to conferenceAbstractpeer-review


Exciton-exciton annihilation (EEA) processes are a fundamental limit for the efficiency of two-dimensional (2D) semiconductors. Here, we demonstrate suppressed EEA by enhancing light-matter interaction in hybrid 2D-dielectric nanophotonic platforms, by coupling excitons in a transition metal dichalcogenide (TMDC) WS2 monolayer with optical Mie resonances in gallium phosphide (GaP) dielectric nanoantennas. From their ultrafast dynamics, we show reduced EEA processes, even under high exciton density, demonstrating the potential of all-dielectric nanoantennas for low-power integrated nanophotonic devices based on 2D semiconductors.

Original languageEnglish
Number of pages1
Publication statusPublished - 2023
EventInternational Conference on Metamaterials, Photonic Crystals and Plasmonics 2023 - Paris, France
Duration: 18 Jul 202321 Jul 2023
Conference number: 13th


ConferenceInternational Conference on Metamaterials, Photonic Crystals and Plasmonics 2023
Abbreviated titleMETA 2023
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