Structural, Optical Properties of Ba(Al₀.₅Nb₀.₅)O₃ Perovskite for Solar Applications

Abstract

Ba(Al₀.₅Nb₀.₅)O₃ perovskite was successfully synthesized using the solid-state reaction method and characterized for its structural, morphological, optical, and surface properties. X-ray diffraction (XRD) confirmed the formation of a cubic perovskite phase, while Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray Spectroscopy (EDS) revealed uniform morphology and correct elemental composition. UV-Vis spectroscopy and Tauc plot analysis determined a direct bandgap of 1.56 eV and an indirect bandgap of 1.32 eV, making it a promising material for photovoltaic applications. The lead-free composition, thermal stability, and strong UV absorption of Ba(Al₀.₅Nb₀.₅)O₃ make it a viable alternative for next-generation perovskite solar cells. Further research should focus on thin-film deposition, doping strategies for bandgap tuning, and electrical transport studies to enhance its performance in solar cell applications.