Researchers at the Indian Institute of Technology Bombay have made a significant breakthrough in bifacial perovskite solar cell technology, achieving a 90% bifaciality factor and a 26% power conversion efficiency when the cells are tilted at a 20-degree angle. This development highlights the potential of bifacial perovskite solar cells to revolutionize photovoltaic technology.
The study revealed that combining a 20-degree tilt angle with a rear-side albedo of 0.5 maximizes performance. These cells incorporate innovative materials, including indium zinc oxide (IZO) for transparent back contacts, which ensure high conductivity and transparency. Experimental results demonstrated a 2% improvement in efficiency, from 17.46% to 18.82%, with optimal tilt angle adjustments and albedo enhancements.
Validated by SCAPS-1D simulations, the cells exhibit intrinsic chemical durability and self-encapsulation, making them cost-effective and suitable for diverse applications, including building-integrated photovoltaics and tandem configurations.
These findings underscore the potential of bifacial perovskite solar cells as a leading technology for future electricity generation, offering high efficiency and scalability for global renewable energy needs.