WS2 monolayers coupled to hyperbolic metamaterial nanoantennas: Broad implications for light-matter-interaction applications

S. R.K. Chaitanya Indukuri; Christian Frydendahl; Jonathan Bar-David; Noa Mazurski; Uriel Levy

doi:10.1021/acsanm.0c02186

WS₂ monolayers coupled to hyperbolic metamaterial nanoantennas: Broad implications for light-matter-interaction applications

S. R.K. Chaitanya Indukuri^*, Christian Frydendahl, Jonathan Bar-David, Noa Mazurski, Uriel Levy^*

^*Corresponding author for this work

Department of Applied Physics

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Because of their atomic-layer thickness, direct band gap, mechanical robustness, and other superior properties, transition metal dichalcogenide (TMDC) monolayers are considered as an attractive alternative to graphene for diverse optoelectronic applications. However, because of the very nature of their atomic-layer thickness, the interaction of light with TMDCs is limited, hindering the overall efficiency for optical applications. Therefore, for TMDCs to become a true candidate as the material of choice for optoelectronics, there is a need for a mechanism that significantly enhances the interaction of light with TMDCs. In this paper, we demonstrate about 30-fold enhancement of the overall photoluminescence emission intensity from a WS₂ monolayer, by its coupling to a hyperbolic metamaterial nanoantenna array. This enhancement corresponds to nearly 300-fold enhancement per individual nanoantenna. This overall enhancement is achieved by the combination of enhancing the excitation (absorption) efficiency and enhancing the radiative decay rate. Our result paves the way for the use of TMDCs in diverse optoelectronic applications, ranging from light sources and photodetectors to saturated absorbers and nonlinear media.

Original language	American English
Pages (from-to)	10226-10233
Number of pages	8
Journal	ACS Applied Nano Materials
Volume	3
Issue number	10
DOIs	https://doi.org/10.1021/acsanm.0c02186
State	Published - 23 Oct 2020

Bibliographical note

Funding Information:
We acknowledge funding from the Israeli Ministry of Science and Technology and The Air Force Office of Scientific Research. C.F. is supported by the Carlsberg Foundation as an Internationalization Fellow. Samples were fabricated at the center for nanoscience and nanotechnology of the Hebrew university. We thank Atzmon Vakahi and Sergei Remennik for FIB and STEM measurements.

Publisher Copyright:
© 2020 American Chemical Society

Keywords

Hyperbolic nanoantenna
Light-matter interaction
Nanoscale-cavity quantum electrodynamics
Purcell factor
Surface-enhanced Raman scattering
WS monolayer

Access to Document

10.1021/acsanm.0c02186

Cite this

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title = "WS2 monolayers coupled to hyperbolic metamaterial nanoantennas: Broad implications for light-matter-interaction applications",

abstract = "Because of their atomic-layer thickness, direct band gap, mechanical robustness, and other superior properties, transition metal dichalcogenide (TMDC) monolayers are considered as an attractive alternative to graphene for diverse optoelectronic applications. However, because of the very nature of their atomic-layer thickness, the interaction of light with TMDCs is limited, hindering the overall efficiency for optical applications. Therefore, for TMDCs to become a true candidate as the material of choice for optoelectronics, there is a need for a mechanism that significantly enhances the interaction of light with TMDCs. In this paper, we demonstrate about 30-fold enhancement of the overall photoluminescence emission intensity from a WS2 monolayer, by its coupling to a hyperbolic metamaterial nanoantenna array. This enhancement corresponds to nearly 300-fold enhancement per individual nanoantenna. This overall enhancement is achieved by the combination of enhancing the excitation (absorption) efficiency and enhancing the radiative decay rate. Our result paves the way for the use of TMDCs in diverse optoelectronic applications, ranging from light sources and photodetectors to saturated absorbers and nonlinear media.",

keywords = "Hyperbolic nanoantenna, Light-matter interaction, Nanoscale-cavity quantum electrodynamics, Purcell factor, Surface-enhanced Raman scattering, WS monolayer",

author = "{Chaitanya Indukuri}, {S. R.K.} and Christian Frydendahl and Jonathan Bar-David and Noa Mazurski and Uriel Levy",

note = "Funding Information: We acknowledge funding from the Israeli Ministry of Science and Technology and The Air Force Office of Scientific Research. C.F. is supported by the Carlsberg Foundation as an Internationalization Fellow. Samples were fabricated at the center for nanoscience and nanotechnology of the Hebrew university. We thank Atzmon Vakahi and Sergei Remennik for FIB and STEM measurements. Publisher Copyright: {\textcopyright} 2020 American Chemical Society",

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T2 - Broad implications for light-matter-interaction applications

AU - Chaitanya Indukuri, S. R.K.

AU - Frydendahl, Christian

AU - Bar-David, Jonathan

AU - Mazurski, Noa

AU - Levy, Uriel

N1 - Funding Information: We acknowledge funding from the Israeli Ministry of Science and Technology and The Air Force Office of Scientific Research. C.F. is supported by the Carlsberg Foundation as an Internationalization Fellow. Samples were fabricated at the center for nanoscience and nanotechnology of the Hebrew university. We thank Atzmon Vakahi and Sergei Remennik for FIB and STEM measurements. Publisher Copyright: © 2020 American Chemical Society

PY - 2020/10/23

Y1 - 2020/10/23

N2 - Because of their atomic-layer thickness, direct band gap, mechanical robustness, and other superior properties, transition metal dichalcogenide (TMDC) monolayers are considered as an attractive alternative to graphene for diverse optoelectronic applications. However, because of the very nature of their atomic-layer thickness, the interaction of light with TMDCs is limited, hindering the overall efficiency for optical applications. Therefore, for TMDCs to become a true candidate as the material of choice for optoelectronics, there is a need for a mechanism that significantly enhances the interaction of light with TMDCs. In this paper, we demonstrate about 30-fold enhancement of the overall photoluminescence emission intensity from a WS2 monolayer, by its coupling to a hyperbolic metamaterial nanoantenna array. This enhancement corresponds to nearly 300-fold enhancement per individual nanoantenna. This overall enhancement is achieved by the combination of enhancing the excitation (absorption) efficiency and enhancing the radiative decay rate. Our result paves the way for the use of TMDCs in diverse optoelectronic applications, ranging from light sources and photodetectors to saturated absorbers and nonlinear media.

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