Spectral and Near-Field Scattering Characteristics of Two-Layered Metal-Containing Nanoparticles in Absorbing Matrices

The influence of the structure, size, and composition of two-layered nanoparticles with a silver nanoshell situated in copper phthalocyanine films on the overall optical response of the hybrid nanomaterial was theoretically studied. The characteristics of surface plasmon resonance absorption (SPRA)...

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Bibliographic Details
Published in:Journal of applied spectroscopy 2023-11, Vol.90 (5), p.1019-1028
Main Authors: Dynich, R. A., Ponyavina, A. N.
Format: Article
Language:English
Subjects:
Absorption spectra
Analytical Chemistry
Atomic/Molecular Structure and Spectra
Band theory
Excitons
Metal phthalocyanines
Mie scattering
Nanomaterials
Nanoparticles
Nanospheres
Near fields
Parameter sensitivity
Photovoltaic cells
Physics
Physics and Astronomy
Refractivity
Resonance absorption
Resonance scattering
Silver
Size effects
Surface plasmon resonance
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Summary:The influence of the structure, size, and composition of two-layered nanoparticles with a silver nanoshell situated in copper phthalocyanine films on the overall optical response of the hybrid nanomaterial was theoretically studied. The characteristics of surface plasmon resonance absorption (SPRA) bands and near-field scattering of the two-layered plasmonic nanospheres were investigated using Mie theory taking into account matrix absorption and internal size effects. It was shown that the SPRA band could be tuned to exciton absorption bands of the organic component by varying the refractive index and volume fraction of the dielectric core in nanoparticles with metal nanoshells. Two attenuation peaks with comparable intensities that were sensitive to a change of the system optical and geometric parameters were observed in a strong coupling regime in the visible spectral region. The results could be used to develop nanostructured functional elements for nanophotonics, photovoltaics, and sensing.
ISSN:0021-9037
1573-8647
DOI:10.1007/s10812-023-01627-2