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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Advanced Functional and Structural Thin Films and Coatings & Honorary Palkowski Session
Presentation Title Infrared Plasmonics Based on Doped Silicon Nanostructures
Author(s) Caroline Bonafos, Jean-Marie Poumirol, Meiling Zhang, Nicolas Chery, Clément Majorel, Arnaud Arbouet, Hervé Rinnert, Etienne Talbot, Peter R Wiecha, Rémi Demoulin, Fuccio Cristiano, G Larrieu, S Kerdiles, P. Acosta-Alba, A Royet, Fabrice Gourbilleau, Vincent Paillard
On-Site Speaker (Planned) Caroline Bonafos
Abstract Scope For a long time, plasmonic-based technology relied on noble metal nanostructures due to their high Localised Surface Plasmon Resonance (LSPR) in the visible range. Recently, it has been discovered that doped semiconductors support LSPR in the midinfrared, even for small objects. The number of dopants becomes a new parameter to adjust the position of the resonance. Among the other semiconductors, silicon is of particular interest due its mastered doping with carrier concentrations up to a few 1020 cm-3 at the bulk state. In this keynote, two recent works concerning the successful doping of Si nanostructures leading to tunable LSPR in the MIR-NIR range will be presented. They concern (i) highly doped Si metasurfaces obtained by a top down approach showing coupling effects and (ii) massively doped small Si nanocrystals (NCs) embedded in silica with LSPR supported with as few as ten active electrons per NC.
Proceedings Inclusion? Planned:

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J-1: Growth, Structure, Phase Stabilization and Optical Properties of Wide Band Gap Germanium Oxide Thin Films
J-2: Influence of Light Intensity and Temperature on Solar Cell Performance
J-3: Machine Learning Based Classification of Optical Materials
Localized Surface Plasmon Resonance in Highly Doped Si Nanocrystals Embedded in a Silica Matrix
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