The transmittance of aggregated copper films at different stages of oxidation in air have been measured in the 250–2500-nm wavelength range. The electron micrographs displayed an almost continuous structure of the films; the electron diffraction analysis shows these films are composed of Cu and Cu2O. These transmittances agree qualitatively with computated values based on the Bruggeman theory considering the films as a random mixture of Cu, Cu2O, and air.
© 1983 Optical Society of America
S. Santucci, P. Picozzi, and L. Paoletti, "Oxidation effect on the optical properties of copper discontinuous films," Appl. Opt. 22, 3201-3203 (1983)