Numerical Simulation of Plasmonic Effects in Amorphous Silicon Induced by Embedded Aluminium Nanoparticles

A. Fantoni, H. Leao, P. Louro, M. Fernandes, Y. Vygranenko, M. Vieira

Research output: Contribution to journalArticle

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. 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.
Original languageEnglish
Pages (from-to)10-16
JournalADVANCES IN CRYOGENIC ENGINEERING, VOLS 55A AND 55B
Volume1646
DOIs
Publication statusPublished - 2015

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