Investigations on structural, optical and electrical property of ZnO-CuO core-shell nano-composite

ZnO-CuO core-shell nano-composite was synthesized by two-stage assisted wet-chemical sol-gel method. The nano-composite investigated by X-ray diffraction, field effective scanning electron microscope, UV-visible spectroscopy and Electrical property at different frequency range 100 Hz to 2 MHz and at different temperature. The X-ray diffraction pattern shows poly-crystalline growth of sample, UV-visible spectrum shows higher absorption in ZnO-CuO nano-composite as compare ZnO, which can be understood in vicinity of morphology and heterojunction. The electrical conductivity of nano-composite has been increased with frequency and temperature due to defect available in the sample and thermal excitation of the charges in the sample respectively. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.