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Characterization of monolayer WSe2 sandwiched in a hetero-plasmonic dimer

Suri, P and Deshpande, P and Ghosh, A (2022) Characterization of monolayer WSe2 sandwiched in a hetero-plasmonic dimer. In: Nano Express, 3 (4).

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Official URL: https://doi.org/10.1088/2632-959X/ac9c78


Recent interests in layered transition-metal dichalcogenides (TMDCs), such as WSe2, MoS2, etc, arise due to their attractive electrical, optical, and mechanical properties with potential applications in energy storage, generation, and many more. Embedding these 2D materials in plasmonic cavities can further enhance light-matter interactions and alter their properties, resulting in diverse and efficient optoelectronic applications. The strain due to the geometry and charge transfer due to the plasmonic materials can further modify the TMDCs’ optical response for sensing applications and as single photon emitters in on-chip optoelectronic applications. This work discusses one such 2D-plasmonic hybrid configuration of a silver sphere on a gold disc with WSe2 sandwiched in between. We perform non-invasive Raman and PL studies of this system to estimate the field enhancement and discuss strain and doping induced in the TMDC.

Item Type: Journal Article
Publication: Nano Express
Publisher: Institute of Physics
Additional Information: The copyright for this article belongs to the Authors.
Keywords: Charge transfer; Emission spectroscopy; Layered semiconductors; Molybdenum compounds; Particle beams; Photons; Plasmonics; Selenium compounds; Transition metals; Tungsten compounds, 2d material; Dichalcogenides; Layered transition metal dichalcogenides; Optical and mechanical properties; Optoelectronic applications; Plasmonic dimers; Plasmonics; Raman/PL; Single photon emission; Strain and doping, Monolayers
Department/Centre: Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering
Division of Physical & Mathematical Sciences > Physics
Date Deposited: 29 Dec 2022 10:58
Last Modified: 29 Dec 2022 10:58
URI: https://eprints.iisc.ac.in/id/eprint/78624

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