Open AccessNumerical simulation of plasmonic effects in amorphous silicon induced by embedded aluminium nanoparticles
Author(s) -
Alessandro Fantoni,
Hugo Filipe Fernandes Leão,
P. Louro,
M. Fernandes,
Y. Vygranenko,
M. Vieira
Publication year - 2015
Publication title -
aip conference proceedings
Language(s) - English
Resource type - Conference proceedings
eISSN - 1551-7616
pISSN - 0094-243X
DOI - 10.1063/1.4908576
Subject(s) - materials science , drude model , nanoparticle , plasmon , permittivity , aluminium , polarizability , silicon , surface plasmon resonance , plasmonic nanoparticles , amorphous solid , amorphous silicon , optoelectronics , optics , molecular physics , dielectric , nanotechnology , composite material , chemistry , physics , crystallography , molecule , crystalline silicon , organic chemistry
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. It is calculated the The polarizability of an sphere and ellipsoidal shaped metal nanoparticles with radius of 20 nm. We also performed FDTD simulations of light propagation inside this structure reporting a comparison among the effects caused by a single nanoparticles of Aluminium, Silver and, as a comparison, an ideally perfectly conductor. The simulation results shows that is possible to obtain a plasmonic resonance in the red part of the spectrum (600-700 nm) when 20-30 nm radius Aluminium ellipsoids are embedded into a-Si: H
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