SONAR: Localized Surface Plasmon Resonance in doped semiconductor nanocrystals (DFM.AD005.259)
Area tematica
Scienze fisiche e tecnologie della materia
Area progettuale
Fotonica: dai processi fisici ai componenti e sistemi e relative applicazioni (DFM.AD005)Struttura responsabile del progetto di ricerca
Istituto di fotonica e nanotecnologie (IFN)
Responsabile di progetto
MONICA BOLLANI
Telefono: 031-3327356
E-mail: monica.bollani@ifn.cnr.it
Abstract
Doped semiconductor nanocrystals (dSNCs) are an exciting emerging material. Carrier densities in the range of 1020-1021cm-3 lead to localized surface plasmon resonances (LSPRs) in the near infrared (NIR). Prominent examples are copper chalcogenides, where doping occurs via vacancy formation, and metal oxides (MOs) that show plasmonic response due to impurity doping. Excitingly, both materials display post synthetic carrier density and LSPR tunability over a broad spectral range. Combined with layered two dimensional materials exciting manipulation options appear where the plasmon-exciton coupling or 'hot' carrier extraction enables local photo luminescence manipulation or tracking of local currents in a graphene based nano device. This active control over the LSPR allows active switching of the strength of coupling, useful also for the study of exciton-plasmon, plasmon-plasmon coupling, or plasmon induced 'hot' carrier extraction in nano-heterostructures. Ultralow doping allows the study of quantum plasmonics.Ultrafast photodoping, optical switching, active light manipulation or tunable NIR photon detection are additionalexciting applications. W
Data inizio attività
01/01/2019
Parole chiave
localized surface plasmon resonance, layered two-dimensional materials, doped semiconductor nanocrystals
Ultimo aggiornamento: 21/04/2025