World record 24.6% efficiency in thin-film solar cells with higher power density

A new world record in solar energy conversion has been set with a CIGS-perovskite tandem cell achieving 24.6% efficiency. This breakthrough combines thin-film technology's flexibility and cost-effectiveness with improved performance. The tandem design uses a CIGS bottom layer and perovskite top cell, with optimized contact layers. This achievement suggests CIGS-based tandem cells could surpass the 33.7% Shockley-Queisser limit for single-junction cells, potentially reaching over 30% efficiency. The development promises advancements in sustainable energy technology, offering advantages in spectrum absorption, radiation resistance, and flexible applications.