Synthesis, characterization, AC conductivity, and diode properties of polyaniline-CaTiO3 composites

Abstract

Polyaniline-CaTiO3 composites of different weight percentages were prepared by in situ polymerization. The prepared composites were characterized by Fourier transform infrared spectroscopy for structural studies, and a morphology analysis was carried out by scanning electron microscopy studies. Real and imaginary parts of the complex impedance were determined for given samples as a function of frequency. Current-voltage and capacitance-voltage measurements were also carried out. The carrier mobility ? values of neat polyaniline and polyaniline-CaTiO3 composites were found to be 5.37×10-3 and 2.73×10-2, respectively, and a significant enhancement, as compared with the reported data, was observed. Therefore, this study may provide a better route for technological applications in all fields in the near future and can also be represented by a pure electronic model. © 2013 John Wiley & Sons, Ltd.