Spectroscopic ellipsometry and UV-vis studies at room temperature of the novel organic-inorganic hybrid of salt Bis (4-acetylanilinium) tetrachlorocadmiate

The optical properties of Bis (4-acetylanilinium) tetrachlorocadmiate compound were studied using phase modulated spectroscopic ellipsometry (PMSE) and ultraviolet-visible (UV-Vis) spectroscopy in the range 200-800 nm. The optical absorbance were measured in order to deduce the absorption coefficient alpha and optical band gap E-g, thus the Tauc model was used to determine the optical gap energy of the synthesized (C8H10NO)(2)CdCl4 compound. The analysis of the data revealed the existence of optical allowed direct transition mechanisms with the band gap energy equal to 3.17 eV. On the other hand the single-effective-oscillator model was used to fit the calculated data to the experimental ellipsometric spectra. Thus the values of the dispersion energy and single-oscillator strength are determined. Also, the extinction coefficient, refractive index, dispersion parameter and both the real epsilon(r) and imaginary parts epsilon(i) of the dielectric permittivity of Bis (4-acetylanilinium) tetrachlorocadmiate compound were calculated and the results are discussed. (C) 2016 Published by Elsevier B.V.