Analysis of metallic nanoparticles embedded in thin film semiconductors for optoelectronic applications

This paper reports about a study of the local plasmonic resonance (LSPR) produced by metal nanoparticles embedded in a dielectric or semiconductor matrix. It is presented an analysis of the LSPR for different nanoparticle metals, shapes, and embedding media composition. Metals of interest for nanoparticle composition are Aluminum and Gold. Shapes of interest are nanospheres and nanotriangles. We study in this work the optical properties of metal nanoparticles diluted in water or embedded in amorphous silicon, ITO and ZnO as a function of size, aspect-ratio and metal type. Following the analysis based on the exact solution of the Mie theory and DDSCAT numerical simulations, it is presented a comparison with experimental measurements realized with arrays of metal nanospheres. Simulations are also compared with the LSPR produced by gold nanotriangles (Au NTs) that were chemically produced and characterized by microscope and optical measurements.

Palavras-chave

Amorphous silicon Mie theory DDSCAT Metal nanoparticles LSPR

URI

http://hdl.handle.net/10400.21/8577

Citação

FANTONI, Alessandro; [et al] – Analysis of metallic nanoparticles embedded in thin film semiconductors for optoelectronic applications. Optical and Quantum Electronics. ISSN 0306-8919. Vol. 50, N.º 6 (2018), pp. 1-12