The optical properties the thin films of of five metal phthalocyanines, cobalt phthalocyanine, copper phthalocyanine, iron phthalocyanine, nickel phthalocyanine, and zinc phthalocyanines, were studied by spectroscopic ellipsometry. Thin films of these metal phthalocyanines were evaporated in high vacuum onto glass substrates, quartz substrates, and silicon substrates. Then the spectroscopic ellipsometry measurements were performed in the wavelength range of 250-800 nm with 2.5 nm step. The data for samples on glass substrates and silicon sub strates was fitted point by point using same parameters to obtain the optical constants. The absorption spectra of metal phthalocyanine films were examined by spetrophotometer, and the film thickness and the surface roughness were studied by atomic...[ Read more ]

The optical properties the thin films of of five metal phthalocyanines, cobalt phthalocyanine, copper phthalocyanine, iron phthalocyanine, nickel phthalocyanine, and zinc phthalocyanines, were studied by spectroscopic ellipsometry. Thin films of these metal phthalocyanines were evaporated in high vacuum onto glass substrates, quartz substrates, and silicon substrates. Then the spectroscopic ellipsometry measurements were performed in the wavelength range of 250-800 nm with 2.5 nm step. The data for samples on glass substrates and silicon sub strates was fitted point by point using same parameters to obtain the optical constants. The absorption spectra of metal phthalocyanine films were examined by spetrophotometer, and the film thickness and the surface roughness were studied by atomic force microscope. The results obtained by the three independent methods are consistent. The optical obtained properties of the five metal phthalo- cyanines were compared, and they are consistent with those in the literature.

The optical functions of the five metal phthalocyanines were also modelled by Lorentz model, relaxed Lorentz model, Tauc-Lorentz model, modified Lorentz model, which were used in the literatures. A new model, dual Lorentz model, was proposed to model the optical functions. Models having 6 oscillators were used to fit the optical functions of iron phthalocyanine, while 5 oscillators for the other four. Simulated annealing algorithm was used as the optimization algorithm in the fitting process. Good fitting have been obtained by those models, and the fitted parameters were given. It was found that modified Lorentz model and dual Lorentz model were good for the description of the optical functions of the metal phthalocyanines.