Semiconductor current-voltage characteristics of some novel perovskite ionic nanocomposites of Sr0.5, Cu0.4, Y0.1 and Sr0.5, Mn0.5 and their electronic sensor applications

Abstract

The aim of the present research focuses on the current voltage and sensor studies of Sr0.5, Cu0.4, Y0.1 and Sr0.5, Mn0.5 nanocomposites for sensor, solar cell applications. Sr 0.5, Cu 0.4, Y 0.1 and Sr 0.5, Mn 0.5 nanocomposite were synthesized and thus obtained nanocomposite materials were investigated their spectroscopic parameters by SEM (Scanning Electron Microscopy), XRD (X-Ray Diffractometer) and CV (Cyclic Voltammetry) techniques. Characterization studies showed that the materials possess non uniform crystal lattice with tetragonal pattern having particle size with 30 nm. The prepared thin films were subjected for Rectifying behavior, IV (Current-Voltage), CV (Capacitance-Voltage), pulse property studies. The reverse I-V characteristics (VBr) were carried out and found that the delocalization of trapping of charge carrier in the perovskite layer, however, it is not affected in the forward I-V characteristics (Vth). Current-voltage studies showed linear relationship having constant resistivity with applied frequency. The impedance and dielectric constants decreases with increase in frequency. Samples were tested against various gas-sensing properties and their sensitivity, resistivity with respect to temperature is measured. The sensor property studies showed that, high dynamic range, susceptible to sensitivity towards O2 gas (8.10 ppm average) and the response time is faster in low concentration without the fusion of other gases. The theoretically developed model was verified through IVC experimentation and comparison between their simulation results.The original version of this article supplied to AIP Publishing contained an additional author name and affiliation erroneously. An updated version of this article, with this information removed, was published on 22 January 2021.