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Vol. 29. Issue 1.
Materiais 2015
Pages e146-e150 (January - April 2017)
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Vol. 29. Issue 1.
Materiais 2015
Pages e146-e150 (January - April 2017)
DOI: 10.1016/j.ctmat.2016.06.011
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Local Surface Plasmon Resonance of metallic nanoparticles embedded in amorphous silicon
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A. Fantonia,b,
Corresponding author
afantoni@deetc.isel.ipl.pt

Corresponding author.
, M. Fernandesa,b, Y. Vigranenkoa,b, M. Vieiraa,b,c
a ISEL-ADEETC, R. Conselheiro Emídio Navarro, 1949-014 Lisboa, Portugal
b CTS-UNINOVA, Quinta da Torre, Monte da Caparica, 2829-516 Caparica, Portugal
c DEE-FCT-UNL, Quinta da Torre, Monte da Caparica, 2829-516 Caparica, Portugal
Article information
Abstract

This work reports a theoretical study aimed to identify the plasmonic resonance condition for a system formed by metallic nanoparticles embedded in an a-Si:H matrix. The study is based on a Tauc-Lorentz model for the electrical permittivity of a-Si:H and a Drude model for the metallic nanoparticles and the polarizability of an aluminium sphereshaped particle with radius of 10-20 nm. We also performed FDTD simulations of light propagation inside this structure reporting about the effects caused by a single nanosphere of aluminium, silver and, as a comparison, an ideally perfectly conductor. The simulation results show that it is possible to obtain a plasmonic resonance in the red part of the spectrum (600-650 nm) when 10-20 nm radius aluminium spheres are embedded into a-Si:H.

Keywords:
a-Si:H
localized plasmonic surface resonance
aluminium
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Copyright © 2017. Portuguese Society of Materials (SPM)
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