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Plasmonic Light Trapping in Titania–Silver Dots Thin Films
Author(s) -
Manno Daniela,
Buccolieri Alessandro,
Carbone Giorgio Giuseppe,
Calcagnile Lucio,
Serra Antonio
Publication year - 2020
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202000124
Subject(s) - materials science , plasmon , raman spectroscopy , scanning electron microscope , transmission electron microscopy , dielectric , anatase , characterization (materials science) , raman scattering , nanoparticle , thin film , silver nanoparticle , nanotechnology , optoelectronics , optics , chemistry , photocatalysis , composite material , biochemistry , physics , catalysis
Metal nanoparticles (NPs) in a transparent dielectric matrix represent a very intriguing system due to the plasmonic absorption tunable in the range of visible wavelengths. Herein, the preparation and physical characterization of plasmonic titania–silver dots thin films are reported. The synthesis parameter that leads to making a TiO 2 matrix in which the Ag NPs are actually incorporated is carefully analyzed and controlled. Morphological (scanning electron microscopy, transmission electron microscopy, high resolution electron microscopy), structural (selected area diffraction, X‐ray diffraction), and spectroscopic (Raman spectroscopy) characterization techniques attest that the Ag NPs are spherical and homogeneously distributed into the TiO 2 dielectric matrix in the structural modification of anatase. The study of the optical properties of films concludes the work. Plasmonic resonance is analyzed according to the light scattering theory.