Modification of AgFeO2 by double nanometric delafossite to be suitable as energy storage in solar cell

The formation of double nanometric delafossite of AgFeO2 was prepared by an easy and low-cost method which is flash auto-combustion technique with urea as a fuel. X-ray diffraction pattern (XRD) revealed single phase structure for all samples. The morphology was analyzed by Field Emission Scanning Electron Microscopy (FESEM) and clarified the hexagonal platelet shape for AgFeO2 and cubic shape for the doubled delafossite Ag2Fe2O4. The composition of the samples was determined using Energy dispersive X-ray (EDX). The particle size estimated from FESEM and XRD analysis, provide that the samples are in nanoscale. The magnetic hysteresis loop of the samples was measured at room temperature (300 K) and at low temperatures (200 K and 100 K) by maximum field 20 kG. Same behavior of hysteresis loop was observed for all samples at 300 K but at low temperatures (200 K and 100 K) Ag2Fe2O4 nanoparticle has higher saturation magnetization and slightly larger coercive field than that of AgFeO2. The optical properties were measured for the investigated samples. The application of this study promotes the use of AgFeO2 and Ag2Fe2O4 in the solar cell. (C) 2017 Elsevier B.V. All rights reserved.