LAUSR

Abstract Quaternary stannite Cu2FeSnS4 thin films (CFTS) have been grown on well cleaned amorphous glass substrates at various deposition temperatures (175 °C–325 °C) by chemical spray pyrolysis. CFTS thin films have been characterized to examine the structural, morphological, compositional, optical and electrical properties. Tetragonal crystal structure has been confirmed from X-ray diffraction. Crystalline size was found to be 10–18 nm. Scanning electron microscopy showed monodisperse particles with hexagonal morphologies. Energy dispersive analysis by X-rays study confirmed stoichiometric deposition of CFTS thin films. The direct bandgap was found to be 1.54 eV for CFTS thin film deposited at 250 °C. It was observed that film resistivity drop at deposition temperature of 250 °C. The structural, morphological, compositional, optical and electrical properties of CFTS films have been found to be deposition temperature dependent. An appropriate optical band gap of 1.54 eV and a noteworthy and stable electrical property indicate their prospective for solar cell applications.