Thøgersen, Annett, Jensen, Ingvild Julie Thue, Belle, Branson et al. (6 more authors) (2022) Plasmonic properties of aluminium nanowires in amorphous silicon. Journal of Physics: Condensed Matter. 065301. ISSN 1361-648X
Abstract
Plasmonic structures can help enhance optical activity in the ultraviolet (UV) region and therefore enhancing photocatalytic reactions and the detection of organic and biological species. Most plasmonic structures are composed of Ag or Au. However, producing structures small enough for optical activity in the UV region has proved difficult. In this study, we demonstrate that aluminium nanowires are an excellent alternative. We investigated the plasmonic properties of the Al nanowires as well as the optoelectronic properties of the surrounding aSi matrix by combining scanning transmission electron microscopy (STEM) imaging, electron energy loss spectroscopy (EELS) and electrodynamic modelling. We have found that the Al nanowires have distinct plasmonic modes in the UV and far UV region, from 0.75 eV to 13 eV. In addition, the size and spacing of the Al nanowires, as well as the embedding material were shown to have a large impact on the type of surface plasmons energies that can be generated in the material. Using electromagnetic modelling, we have identified the modes and illustrated how they could be tuned further.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2022 The Author(s). |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 13 Jan 2023 14:40 |
Last Modified: | 08 Feb 2025 00:48 |
Published Version: | https://doi.org/10.1088/1361-648X/aca30e |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1088/1361-648X/aca30e |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:195283 |
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Filename: Th_gersen_2023_J._Phys._Condens._Matter_35_065301.pdf
Description: Plasmonic properties of aluminium nanowires in amorphous silicon
Licence: CC-BY 2.5