Structural and optical studies of tetra (tricarbethoxy)-substituted metallophthalocyanines

Thin films of tetra (tricarbethoxy)-substituted metallophthalocyanines [where the metal was Cobalt(II), Copper(II) or Palladium(II)] were prepared by spin coating technique. Optical properties of thin films were investigated by measuring the transmittance and reflectance using a spectrophotometer in the wavelength range of 350-1000 nm. The refraction index and extinction coefficient were determined. Surface microstructure of the films was observed by Atomic force microscopy. Also, the optical band gap and dielectric constant values were calculated.