Physical Properties of NiFeS₂ Thin Films Prepared by Spray Pyrolysis Method

This work focuses on the characterization and fabrication of iron–nickel–sulfide (FeNiS₂) thin films made via chemical spray pyrolysis. The quality of the films was assessed using a variety of physicochemical characterization methods, including optical and electrical characteristics, energy dispersive X-ray analysis (EDX), X-ray diffraction, and scanning electron microscopy. The purity of the NiFeS₂ thin films and their good structure in accordance with the cubic structure (Fm3m) were determined by the structural studies. Finally, after examining the practical results of optical and electrical properties, it was determined that NiFeS₂ thin film has a number of benefits and can be applied in a number of settings, including metal-air batteries, supercapacitors, solar cells, and electrocatalysts.