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

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

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

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

School of Physics and Astronomy

Research output: Contribution to conference › Abstract › peer-review

Abstract

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 language	English
Pages	1283
Number of pages	1
Publication status	Published - 2023
Event	International Conference on Metamaterials, Photonic Crystals and Plasmonics 2023 - Paris, France Duration: 18 Jul 2023 → 21 Jul 2023 Conference number: 13th https://metaconferences.org/META23/files/meta23_proceedings.pdf

Conference

Conference	International Conference on Metamaterials, Photonic Crystals and Plasmonics 2023
Abbreviated title	META 2023
Country/Territory	France
City	Paris
Period	18/07/23 → 21/07/23
Internet address	https://metaconferences.org/META23/files/meta23_proceedings.pdf

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title = "Radiative suppression of exciton-exciton annihilation in a two-dimensional semiconductor",

abstract = "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.",

author = "Luca Sortino and Merve Giilmiis and Benjamin Tilmann and Menezes, {Leonardo de S.} and Maier, {Stefan A.}",

note = "Publisher Copyright: {\textcopyright} 2023, META Conference. All rights reserved.; International Conference on Metamaterials, Photonic Crystals and Plasmonics 2023, META 2023 ; Conference date: 18-07-2023 Through 21-07-2023",

year = "2023",

language = "English",

pages = "1283",

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T1 - Radiative suppression of exciton-exciton annihilation in a two-dimensional semiconductor

AU - Sortino, Luca

AU - Giilmiis, Merve

AU - Tilmann, Benjamin

AU - Menezes, Leonardo de S.

AU - Maier, Stefan A.

N1 - Conference code: 13th

PY - 2023

Y1 - 2023

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85174603240&partnerID=8YFLogxK

M3 - Abstract

AN - SCOPUS:85174603240

SP - 1283

T2 - International Conference on Metamaterials, Photonic Crystals and Plasmonics 2023

Y2 - 18 July 2023 through 21 July 2023

ER -

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

Abstract

Conference

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

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