Emergent Optical Resonances in Atomically Phase-Patterned Semiconducting Monolayers of WS<sub>2</sub>

Atomic-scale control of light–matter interactions represents the ultimate frontier for many applications in photonics and quantum technology. Two-dimensional semiconductors, including transition-metal dichalcogenides, are a promising platform to achieve such control due to the combination of an atomically thin geometry and convenient photophysical properties. Here, we demonstrate that a variety of durable polymorphic structures can be combined to generate additional optical resonances beyond the standard excitons. We theoretically predict and experimentally show that atomic-sized patches of the 1T phase within the 1H matrix form unique electronic bands that lead to the emergence of robust optical resonances with strong absorption, circularly polarized emission, and long radiative lifetimes. The atomic manipulation of two-dimensional semiconductors opens unexplored scenarios for light harvesting devices and exciton-based photonics.

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Publication Details

Journal
ACS Photonics
Published
2024-08-16
DOI
https://doi.org/10.1021/acsphotonics.4c00983
Primary Topic
2D Materials and Applications
Type
article
Field-Weighted Citation Impact
0.00

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article

Emergent Optical Resonances in Atomically Phase-Patterned Semiconducting Monolayers of WS2

John M. Woods, Enrique Mejía‐Ospino, Johannes Flick, Takashi Taniguchi et al.
ACS Photonics
2D Materials and Applications
article

Emergent Optical Resonances in Atomically Phase-Patterned Semiconducting Monolayers of WS2

John M. Woods, Enrique Mejía‐Ospino, Johannes Flick, Takashi Taniguchi, Gabriele Grosso, Kenji Watanabe, Ashok Adhikari, Saroj B. Chand
article en

Abstract

Atomic-scale control of light–matter interactions represents the ultimate frontier for many applications in photonics and quantum technology. Two-dimensional semiconductors, including transition-metal dichalcogenides, are a promising platform to achieve such control due to the combination of an atomically thin geometry and convenient photophysical properties. Here, we demonstrate that a variety of durable polymorphic structures can be combined to generate additional optical resonances beyond the standard excitons. We theoretically predict and experimentally show that atomic-sized patches of the 1T phase within the 1H matrix form unique electronic bands that lead to the emergence of robust optical resonances with strong absorption, circularly polarized emission, and long radiative lifetimes. The atomic manipulation of two-dimensional semiconductors opens unexplored scenarios for light harvesting devices and exciton-based photonics.

ACS PhotonicsVol. 11(9)
The Graduate Center, CUNY (US), City College of New York (US), City University of New York (US), National Institute for Materials Science (JP), CUNY Advanced Science Research Center (US), Flatiron Health (United States) (US)
Directorate for Mathematical and Physical Sciences, Research Foundation of The City University of New York, Japan Society for the Promotion of Science, Division of Equity for Excellence in STEM
Openalex Percentile: Top 92%
2D Materials and Applications
DOIOpen Access PDFOpenAlex
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