Enhancing anti-reflective properties of TiO۲ coatings via controlled surface roughness for solar cell applications

This study investigates the role of controlled surface roughness in enhancing the anti-reflective (AR) properties of titanium dioxide (TiO۲) coatings, synthesized via the sol-gel method and deposited on glass substrates. Surface roughness was systematically modulated by incorporating varying concentrations of Pluronic F۱۲۷, a pore-forming agent, and through subsequent etching with hydrofluoric acid (HF). Comprehensive characterization techniques, including scanning electron microscopy (SEM), atomic force microscopy (AFM), and UV-Vis spectroscopy, were employed to analyze the surface morphology and optical performance of the coatings. The results reveal a direct correlation between increased surface roughness and improved light trapping capabilities, leading to a significant reduction in reflectance across the visible spectrum. The optimized surface roughness, achieved through a synergistic combination of pore formation and HF etching, demonstrated a remarkable enhancement in AR properties, with reflectance values minimized to unprecedented levels. These findings underscore the potential of tailored surface roughness as a critical parameter for improving the efficiency of TiO۲-based AR coatings in photovoltaic applications. The study provides valuable insights into the design and fabrication of advanced AR coatings, offering a scalable and cost-effective approach to enhancing solar cell performance. This work contributes to the ongoing efforts to address global energy challenges by optimizing light management in solar energy systems.

کلیدواژه ها:

TiO۲ ، Anti-Reflective Coatings ، Surface Roughness ، Solar Cells ، Sol-Gel Method