Plasmonic properties of aluminium nanowires in amorphous silicon

Annett Thøgersen; Ingvild Julie Thue Jensen; Branson Belle; Marit Stange; Vilde Mari Reinertsen; Torunn Kjeldstad; Øystein Prytz; Eduard V Monakhov; Demie Kepaptsoglou

doi:10.1088/1361-648X/aca30e

Plasmonic properties of aluminium nanowires in amorphous silicon

Annett Thøgersen, Ingvild Julie Thue Jensen, Branson Belle, Marit Stange, Vilde Mari Reinertsen, Torunn Kjeldstad, Øystein Prytz, Eduard V Monakhov, Demie Kepaptsoglou

Physics

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

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.

Original language	English
Article number	065301
Number of pages	10
Journal	Journal of Physics: Condensed Matter
Volume	35
DOIs	https://doi.org/10.1088/1361-648X/aca30e
Publication status	Published - 14 Dec 2022

Bibliographical note

Access to Document

10.1088/1361-648X/aca30eLicence: CC BY

Plasmonic properties of aluminium nanowires in amorphous silicon
© 2022 The Author(s).
Final published version, 4.45 MBLicence: CC BY

Cite this

@article{e5a3f468fec8409cab4f26117f73af49,

title = "Plasmonic properties of aluminium nanowires in amorphous silicon",

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.",

author = "Annett Th{\o}gersen and Jensen, {Ingvild Julie Thue} and Branson Belle and Marit Stange and Reinertsen, {Vilde Mari} and Torunn Kjeldstad and {\O}ystein Prytz and Monakhov, {Eduard V} and Demie Kepaptsoglou",

note = "{\textcopyright} 2022 The Author(s).",

year = "2022",

month = dec,

day = "14",

doi = "10.1088/1361-648X/aca30e",

language = "English",

volume = "35",

journal = "Journal of Physics: Condensed Matter",

issn = "0953-8984",

publisher = "IOP Publishing",

}

TY - JOUR

T1 - Plasmonic properties of aluminium nanowires in amorphous silicon

AU - Thøgersen, Annett

AU - Jensen, Ingvild Julie Thue

AU - Belle, Branson

AU - Stange, Marit

AU - Reinertsen, Vilde Mari

AU - Kjeldstad, Torunn

AU - Prytz, Øystein

AU - Monakhov, Eduard V

AU - Kepaptsoglou, Demie

PY - 2022/12/14

Y1 - 2022/12/14

N2 - 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.

AB - 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.

U2 - 10.1088/1361-648X/aca30e

DO - 10.1088/1361-648X/aca30e

M3 - Article

SN - 0953-8984

VL - 35

JO - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

M1 - 065301

ER -