Near-IR plasmons in micro and nanoparticles with a semiconductor core

Fahime Seyedheydari; Kevin Conley; Tapio Ala-Nissila

doi:10.3390/photonics7010010

Near-IR plasmons in micro and nanoparticles with a semiconductor core

Fahime Seyedheydari
, Kevin Conley
, Tapio Ala-Nissila^*

^*Corresponding author for this work

Loughborough University

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

5 Citations (Scopus)

126 Downloads (Pure)

Abstract

We computationally study the electromagnetic response of semiconductor micro and nanoinclusions for realizing highly reflective, plasmonically enhanced coatings in the visible and infrared regime. We first examine the influence of oxide coatings on the Mie resonances of microparticles of low-bandgap semiconductors (Si and Ge) in the near-IR regime. We then study the influence of a semiconducting core on the localized surface plasmon resonances of Si@Ag and Ge@Ag core@shell nanoparticles. Our results show a strong interaction between the resonances of the plasmonic Ag shell and the semiconducting core material which allows tuning of the electromagnetic response for near-IR applications.

Original language	English
Article number	10
Number of pages	11
Journal	Photonics
Volume	7
Issue number	1
DOIs	https://doi.org/10.3390/photonics7010010
Publication status	Published - 1 Mar 2020
MoE publication type	A1 Journal article-refereed

Funding

This work was performed as part of the Academy of Finland project 314488 and QTF Centre of Excellence program (project 312298). We acknowledge computational resources provided by CSC-IT Center for Science (Finland)-and by the Aalto Science-IT project (Aalto University School of Science).

Keywords

Core@Shell
Hybridization model
Mie theory
Plasmon

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10.3390/photonics7010010

Seyedheydari_Near-IR_photonics-07-00010Final published version, 2.5 MBLicence: CC BY

Cite this

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title = "Near-IR plasmons in micro and nanoparticles with a semiconductor core",

abstract = "We computationally study the electromagnetic response of semiconductor micro and nanoinclusions for realizing highly reflective, plasmonically enhanced coatings in the visible and infrared regime. We first examine the influence of oxide coatings on the Mie resonances of microparticles of low-bandgap semiconductors (Si and Ge) in the near-IR regime. We then study the influence of a semiconducting core on the localized surface plasmon resonances of Si@Ag and Ge@Ag core@shell nanoparticles. Our results show a strong interaction between the resonances of the plasmonic Ag shell and the semiconducting core material which allows tuning of the electromagnetic response for near-IR applications.",

keywords = "Core@Shell, Hybridization model, Mie theory, Plasmon",

author = "Fahime Seyedheydari and Kevin Conley and Tapio Ala-Nissila",

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T1 - Near-IR plasmons in micro and nanoparticles with a semiconductor core

AU - Seyedheydari, Fahime

AU - Conley, Kevin

AU - Ala-Nissila, Tapio

PY - 2020/3/1

Y1 - 2020/3/1

N2 - We computationally study the electromagnetic response of semiconductor micro and nanoinclusions for realizing highly reflective, plasmonically enhanced coatings in the visible and infrared regime. We first examine the influence of oxide coatings on the Mie resonances of microparticles of low-bandgap semiconductors (Si and Ge) in the near-IR regime. We then study the influence of a semiconducting core on the localized surface plasmon resonances of Si@Ag and Ge@Ag core@shell nanoparticles. Our results show a strong interaction between the resonances of the plasmonic Ag shell and the semiconducting core material which allows tuning of the electromagnetic response for near-IR applications.

AB - We computationally study the electromagnetic response of semiconductor micro and nanoinclusions for realizing highly reflective, plasmonically enhanced coatings in the visible and infrared regime. We first examine the influence of oxide coatings on the Mie resonances of microparticles of low-bandgap semiconductors (Si and Ge) in the near-IR regime. We then study the influence of a semiconducting core on the localized surface plasmon resonances of Si@Ag and Ge@Ag core@shell nanoparticles. Our results show a strong interaction between the resonances of the plasmonic Ag shell and the semiconducting core material which allows tuning of the electromagnetic response for near-IR applications.

KW - Core@Shell

KW - Hybridization model

KW - Mie theory

KW - Plasmon

UR - https://www.scopus.com/pages/publications/85081933190

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DO - 10.3390/photonics7010010

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SN - 2304-6732

VL - 7

JO - Photonics

JF - Photonics

IS - 1

M1 - 10

ER -

Near-IR plasmons in micro and nanoparticles with a semiconductor core

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Novel measurement and sensing technologies for thermal radiation of unwanted fires

Finnish Centre of Excellence in Quantum Technology

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Near-IR plasmons in micro and nanoparticles with a semiconductor core

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

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Novel measurement and sensing technologies for thermal radiation of unwanted fires

Finnish Centre of Excellence in Quantum Technology

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Science-IT

Cite this