The Effect of Dielectric Nano Size on its some Electrical and Optical Properties

Abstract

Nano optical and electrical properties play an important role in fabrication of new solar cells generation to solve the energy problem. To do this thin films fabricated from some magnetic materials were experimented. In this work, The (BaxFe1-xTiO4) (x=1, 0.1, 0.2, 0.3, 0.5, 0.6, 0.7,08, 0.9 and 0) were prepared by the sol- gel method. The influence of Fe concentration on the structural optical and electrical properties of the samples was studied by using x-ray diffraction (XRD), Reitveld and UV-VIS spectroscopy. It found the effect of iron doping improves the structural optical and electrical properties. The X-ray diffraction (XRD) analyses showed that for all samples the average Nano size decrease with decreasing of iron concentration. UV-visible absorption spectra showed that the observed value of the energy gap decreass from (2.074) eV to (2.046) eV as iron concentration decreases. The conductivity increases when Fe concentration increasesfor shorter wavelengths and decreases at long wavelength.Decreasing iron concentration increases absorption coefficient. Besides that decreasing Nano size, increases absorption coefficient. The results were explained according to electromagnetic and energy bands theories.