Naslov
Optical properties of gold island films : a spectroscopic ellipsometry study

Autori
Lončarić, Martin ; Sancho-Parramon, Jordi ; Zorc, Hrvoje

Izvornik
Thin solid films (0040-6090) 519 (2011), 4; 2946-2950

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

Ključne riječi
spectroscopic ellipsometry ; metal islands ; surface plasmon ; optical properties

Sažetak
Metal island films of noble metals are obtained by deposition on glass substrates during the first stage of evaporation process when supported metal nanoparticles are formed. These films show unique optical properties, owing to the localized surface plasmon resonance of free electrons in metal nanoparticles. In the present work we study the optical properties of gold metal island films deposited on glass substrates with different mass thicknesses at different substrate temperatures. The optical characterization is performed by spectroscopic ellipsometry at different angles of incidence and transmittance measurements at normal incidence in the same point of the sample. Fitting of the ellipsometric data allows determining the effective optical constants and thickness of the island film. A multiple oscillator approach was used to successfully represent the dispersion of the effective optical constants of the films.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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