Tuning the Band Gap of BaTiO3 by rGO Incorporation for Photovoltaic Application

Abstract

Band-gap engineering of ferroelectric oxides is an effective approach to enhance photo response for photovoltaic applications. In this study, rGO-incorporated BaTiO₃ nanocomposites were developed to tailor the band gap, improve visible-light absorption, and enhance charge transport. The presence of rGO introduces defect states and facilitates efficient charge separation, resulting in improved photocurrent, photodiode sensitivity, and photocatalytic activity. These multifunctional composites show strong potential for photovoltaic, photodetector, and environmental remediation applications.