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Photonics
Volume 7
Issue 1
10.3390/photonics7010010
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Article

Near-IR Plasmons in Micro and Nanoparticles with a Semiconductor Core

by
Fahime Seyedheydari
1,
Kevin Conley
1 and
Tapio Ala-Nissila
1,2,*
1
Department of Applied Physics, QTF Centre of Excellence, Aalto University School of Science, P.O. Box 11100, FI-00076 Aalto, Finland
2
Interdisciplinary Centre for Mathematical Modelling, Department of Mathematical Sciences, Loughborough University, Loughborough, Leicestershire LE11 3TU, UK
*
Author to whom correspondence should be addressed.
Photonics 2020, 7(1), 10; https://doi.org/10.3390/photonics7010010
Submission received: 5 December 2019 / Revised: 15 January 2020 / Accepted: 15 January 2020 / Published: 17 January 2020
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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; plasmon; Mie theory; hybridization model Core@Shell; plasmon; Mie theory; hybridization model

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MDPI and ACS Style

Seyedheydari, F.; Conley, K.; Ala-Nissila, T. Near-IR Plasmons in Micro and Nanoparticles with a Semiconductor Core. Photonics 2020, 7, 10. https://doi.org/10.3390/photonics7010010

AMA Style

Seyedheydari F, Conley K, Ala-Nissila T. Near-IR Plasmons in Micro and Nanoparticles with a Semiconductor Core. Photonics. 2020; 7(1):10. https://doi.org/10.3390/photonics7010010

Chicago/Turabian Style

Seyedheydari, Fahime, Kevin Conley, and Tapio Ala-Nissila. 2020. "Near-IR Plasmons in Micro and Nanoparticles with a Semiconductor Core" Photonics 7, no. 1: 10. https://doi.org/10.3390/photonics7010010

APA Style

Seyedheydari, F., Conley, K., & Ala-Nissila, T. (2020). Near-IR Plasmons in Micro and Nanoparticles with a Semiconductor Core. Photonics, 7(1), 10. https://doi.org/10.3390/photonics7010010

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