biostudies-literatureSygletou MH2020 Marie Sklodowska-Curie Actions1881-1889https://www.ebi.ac.uk/biostudies/studies/S-EPMC8819857biostudies-literatureUnknown126(4)Understanding the interaction between plasmonic nanoparticles and transparent conductive oxides is instrumental to the development of next-generation photovoltaic, optoelectronic, and energy-efficient solid-state lighting devices. We investigated the optical response of hybrid media composed of gold nanoparticles deposited on aluminum-doped zinc oxide thin films with varying doping concentration by spectroscopic ellipsometry. The dielectric functions of bare AZO were addressed first, revealing doping-induced effects such as the band gap shift and the appearance of free carriers. In the hybrid media, a blue-shift of the localized surface plasmon resonance of Au NPs as a function of increasing Al doping of the substrate was observed, ascribed to the occurrence of a charge transfer between the two materials and the doping-dependent variation of the polarizability of the substrate.The journal of physical chemistry. C, Nanomaterials and interfacesDoping-Dependent Optical Response of a Hybrid Transparent Conductive Oxide/Plasmonic Medium.PMC8819857799126Canepa Mdi Bona ABisio FBenedetti SSygletou MfalseDoping-Dependent Optical Response of a Hybrid Transparent Conductive Oxide/Plasmonic Medium.Understanding the interaction between plasmonic nanoparticles and transparent conductive oxides is instrumental to the development of next-generation photovoltaic, optoelectronic, and energy-efficient solid-state lighting devices. We investigated the optical response of hybrid media composed of gold nanoparticles deposited on aluminum-doped zinc oxide thin films with varying doping concentration by spectroscopic ellipsometry. The dielectric functions of bare AZO were addressed first, revealing doping-induced effects such as the band gap shift and the appearance of free carriers. In the hybrid media, a blue-shift of the localized surface plasmon resonance of Au NPs as a function of increasing Al doping of the substrate was observed, ascribed to the occurrence of a charge transfer between the two materials and the doping-dependent variation of the polarizability of the substrate.2022-01-01T00:00:00Z2022 Feb2025-04-04T09:00:15.942Z2025-04-04T09:00:15.942ZS-EPMC88198573514557110.1021/acs.jpcc.1c07567