Olavo Cardozo, Muhammad Habib, Weixiong Jiang, Renato E. de Araujo, Sajid Farooq
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Superior Performance of Hollow Plasmonic Cubic Structures for Solar Energy Harvesting, Conversion, and Storage Systems
The remarkable optical properties of metallic nanoparticles play a pivotal role in enhancing light absorption for solar energy applications by efficiently converting solar flux into heat. In the pursuit of achieving a broad spectrum absorption from visible to near-infrared (NIR) wavelengths, colloidal nanoparticles, specifically gold/silver hollow nanocubes (HNC) with varied aspect ratios, are utilized. Employing a comprehensive full-wave field analysis, we assess the linear optical characteristics to determine the solar-weighted absorption coefficient of these plasmonic nanofluids across different concentrations and aspect ratios. Our findings reveal that the solar-weighted absorption efficiency of gold hollow plasmonic nanocubes significantly improves (up to 93 %) even at extremely low volume fractions (p = 3.10\(^{-6}\)) compared to silver hollow plasmonic nanocubes (83 %). The outstanding performance of Au hollow plasmonic nanocubes, boasting over 99 % enhancement in solar-weighted absorption efficiency at minimal nanofluid thickness (1.0 cm), underscores their Ag counterparts, marking a significant leap forward in ideal solar absorber conditions.
期刊介绍:
Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons.
Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.