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Plasmonic resonances in copper island films


Sancho-Parramon, Jordi; Okorn, Boris; Salamon, Krešimir; Janicki, Vesna;
Plasmonic resonances in copper island films // Applied surface science, 467 (2019), 847-853 doi:10.1016/j.apsusc.2018.08.124 (međunarodna recenzija, članak, znanstveni)


Naslov
Plasmonic resonances in copper island films

Autori
Sancho-Parramon, Jordi ; Okorn, Boris ; Salamon, Krešimir ; Janicki, Vesna ;

Izvornik
Applied surface science (0169-4332) 467 (2019); 847-853

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Copper metal island films ; localized surface plasmon resonance ; optical characterization ; ellipsometry ; copper oxide ; effective medium theory

Sažetak
The optical properties of Cu island films, in particular their plasmonic behaviour, are investigated. The films are fabricated by electron beam evaporation using different deposition parameters (deposited mass thickness and substrate temperature). The optical response can be tuned from a metal-like behaviour to well-defined localized surface plasmon resonances and is well correlated with the structural and morphological properties of the samples. Significant changes of optical properties take place with sample aging, including quenching and non-monotonic frequency shift of the plasmon resonance. These changes are interpreted in terms of Cu oxidization process, that appears to strongly depend on the initial morphology of samples. Theoretical calculations in the framework of effective medium theories qualitatively explain the experimental observations. Overall, the results give a detailed insight on the morphology dependence and time evolution of the optical response of Cu island films that may provide useful guidelines for applying these nanostructures in plasmonic applications.

Izvorni jezik
Engleski

Znanstvena područja
Fizika



POVEZANOST RADA


Projekt / tema
HRZZ-PKP-2016-06-4469 - Plazmonički alternativni materijali za konverziju solarne energije (Jordi Sancho-Parramon, )

Ustanove
Institut "Ruđer Bošković", Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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