The University of Southampton
University of Southampton Institutional Repository

Spectral tunability of plasmonic scattering by silver nanodiscs near a reflector

Spectral tunability of plasmonic scattering by silver nanodiscs near a reflector
Spectral tunability of plasmonic scattering by silver nanodiscs near a reflector
The scattering properties of a plasmonic array can be reinforced by placing the array near a planar reflector. Finite- Difference-Time-Domain (FDTD) simulations have been used to demonstrate the key design challenge of modulating the electric field that drives the plasmonic scattering, by varying the distance of a single Ag nanodisc from a Ag reflector. We show that the thickness of the dielectric separation layer plays a critical role in determining the spectral characteristics and the intensity of the power scattered by a Ag nanodisc near a reflector. A possible application of the designed structure as a plasmonic light-trap for thin Si solar cells is also experimentally demonstrated. Electron-beam lithography has been used to fabricate a pseudo-random array of 150nm plasmonic Ag nanodiscs on SiO2 on a Ag reflector substrate. The plasmonic reflector shows a high diffuse reflectance of ~54% in the near-infrared, near-bandgap 600-900nm wavelength region for thin Si solar cells, with a low broadband absorption loss of ~18%. Wavelength-angle resolved scattering measurements indicate an angular scattering range between 20° to 80° with maximum intensity of the scattered power in the 20° to 60° angular range.
SPIE - The International Society for Optical Engineering
Sesuraj, Rufina S.A.
2ff818d7-d4d7-4e3a-9cff-8702325ea422
Temple, T.L.
1c5f14df-99d5-438c-b0b3-1f017e17c643
Bagnall, D.M.
5d84abc8-77e5-43f7-97cb-e28533f25ef1
Sesuraj, Rufina S.A.
2ff818d7-d4d7-4e3a-9cff-8702325ea422
Temple, T.L.
1c5f14df-99d5-438c-b0b3-1f017e17c643
Bagnall, D.M.
5d84abc8-77e5-43f7-97cb-e28533f25ef1

Sesuraj, Rufina S.A., Temple, T.L. and Bagnall, D.M. (2012) Spectral tunability of plasmonic scattering by silver nanodiscs near a reflector. In Plasmonics: Metallic Nanostructures and Their Optical Properties X. vol. 8457, SPIE - The International Society for Optical Engineering.. (doi:10.1117/12.956502).

Record type: Conference or Workshop Item (Paper)

Abstract

The scattering properties of a plasmonic array can be reinforced by placing the array near a planar reflector. Finite- Difference-Time-Domain (FDTD) simulations have been used to demonstrate the key design challenge of modulating the electric field that drives the plasmonic scattering, by varying the distance of a single Ag nanodisc from a Ag reflector. We show that the thickness of the dielectric separation layer plays a critical role in determining the spectral characteristics and the intensity of the power scattered by a Ag nanodisc near a reflector. A possible application of the designed structure as a plasmonic light-trap for thin Si solar cells is also experimentally demonstrated. Electron-beam lithography has been used to fabricate a pseudo-random array of 150nm plasmonic Ag nanodiscs on SiO2 on a Ag reflector substrate. The plasmonic reflector shows a high diffuse reflectance of ~54% in the near-infrared, near-bandgap 600-900nm wavelength region for thin Si solar cells, with a low broadband absorption loss of ~18%. Wavelength-angle resolved scattering measurements indicate an angular scattering range between 20° to 80° with maximum intensity of the scattered power in the 20° to 60° angular range.

This record has no associated files available for download.

More information

Published date: 9 October 2012
Venue - Dates: SPIE Optics and Photonics 2012 : Plasmonics: Metallic Nanostructures and Their Optical Properties X, San Diego, United States, 2012-10-09
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 344522
URI: http://eprints.soton.ac.uk/id/eprint/344522
PURE UUID: 7ec34633-19bf-4943-8649-527a61624b43

Catalogue record

Date deposited: 24 Oct 2012 13:24
Last modified: 14 Mar 2024 12:14

Export record

Altmetrics

Contributors

Author: Rufina S.A. Sesuraj
Author: T.L. Temple
Author: D.M. Bagnall

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×