Open AccessModeling of optical properties of hybrid metal-organic nanostructures
Author(s) -
A. N. Ponyavina,
K. A. Barbarchyk,
А. Д. Замковец,
С. А. Тихомиров
Publication year - 2022
Publication title -
doklady belorusskogo gosudarstvennogo universiteta informatiki i radioèlektroniki
Language(s) - English
Resource type - Journals
eISSN - 2708-0382
pISSN - 1729-7648
DOI - 10.35596/1729-7648-2021-19-8-15-19
Subject(s) - materials science , dielectric , surface plasmon resonance , refractive index , mie scattering , plasmon , localized surface plasmon , absorption (acoustics) , surface plasmon , scattering , optics , optoelectronics , nanoparticle , light scattering , nanotechnology , composite material , physics
To model spectral characteristics of hybrid metal-organic nanostructures, the extended Mie theory was used, which makes it possible to calculate the extinction efficiency factor (Qext) and the scattering efficiency factor in the near zone (Q NF ) of two-layer spherical particles placed in an absorbing matrix. Two-layer plasmon nanospheres consisting of a metallic core (Ag, Cu) coated with dielectric shells and located into the copper phthalocyanine (CuPc) matrix were considered. The influence of dielectric shell thickness and refractive index on the characteristics of the surface plasmon resonance of absorption (SPRA) was studied. The possibility of the SPRA band tuning by changing the optical and geometrical parameters of dielectric shells was shown. It was established that dielectric shells allow to shift the surface plasmon resonance band of plasmonic nanoparticles absorption both to short- and long-wavelength spectral range depending on the relation between shell and matrix refractive indexes.