Optical properties of gold and aluminum island films with regard to grain size and interisland spacing distributions

Abstract

In this study, optical properties of gold and aluminum island films are described in terms of a classical macroscopic model. The distributions of island diameters and interisland spacing are assumed to be lognormal. The study also involves the effective permittivity of the surrounding. There is good agreement between theoretical and experimental results, especially for small-thickness and small-grain-size films.