Optical constants of electrodeposited thick gold (1 lm) films on nickel with root mean square (RMS) roughness between 5 and 100 nm are calculated using both the Azzam–Bashara multiple-reflection-transmission model and the Maxwell–Garnett law. The solid fraction variation in the roughened surface layer can be calculated with a Gaussian function depending on RMS, measured by atomic force microscope. Calculated and experimental ellipsometric parameters w and D are in good accordance and the optical constants varies with RMS in accordance with the theory.

Calculation model for rough gold optical constants

CAVALLOTTI, PIETRO LUIGI;MAGAGNIN, LUCA;
2004-01-01

Abstract

Optical constants of electrodeposited thick gold (1 lm) films on nickel with root mean square (RMS) roughness between 5 and 100 nm are calculated using both the Azzam–Bashara multiple-reflection-transmission model and the Maxwell–Garnett law. The solid fraction variation in the roughened surface layer can be calculated with a Gaussian function depending on RMS, measured by atomic force microscope. Calculated and experimental ellipsometric parameters w and D are in good accordance and the optical constants varies with RMS in accordance with the theory.
gold; ellipsometry, surface structure, morphology, roughness, topography, atomic force microscopy
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/248014
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