Effect of size of CdO on bias dependent conduction and relaxation mechanism by means of impedance spectroscopy: Experimental and theoretical studies

Abstract

In this report, the morphological impact of hydrothermally derived CdO on charge conduction and relaxation is investigated by using bias-dependent impedance spectroscopy (IS). The work of art is the findings of the impact of grain and grain boundaries of CdO on the frequency-dependent electric conductivity and relaxation mechanism followed by the crystallite size. In this regard, two different crystallite size based CdOs are derived from hydrothermal route at different temperatures. Materials are characterized by XRD, FESEM, UV–vis absorption spectra. The dc conductivity is also evaluated by measuring current-voltage characteristics, and bias-dependent Impedance Spectroscopy at room temperature, which spectacles the CdO with larger crystallite size dominate the conduction mechanism.