Fantoni, AlessandroFernandes, MiguelVigranenko, Y.Vieira, Manuela2017-11-072017-11-072017-04FANTONI, A. [et al] - Local Surface Plasmon Resonance of metallic nanoparticles embedded in amorphous silicon. Ciência & Tecnologia Dos Materiais. ISSN: 0870-8312. Vol. 29, N.º1, (2017), pp.146-1500870-8312http://hdl.handle.net/10400.21/7461This 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 sphere shaped 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. (C) 2017 Portuguese Society of Materials (SPM). Published by Elsevier, S.L.U.engA-Si:HLocalized plasmonic surface resonanceAluminiumjournal article10.1016/j.ctmat.2016.06.011