Defect passivation and optical management of triple-junction solar cells.
Passivating molecules and optical strategies boost triple-junction solar cell efficiency to over 32%, approaching theoretical limits for scalable photovoltaic technology.
- Why it matters: Improving the performance of perovskite/silicon triple-junction solar cells is crucial to surpass the efficiency of single-junction devices and enable cost-effective, high-performance solar energy solutions.
- What they did: The study employed a novel passivating molecule, 4F-POEABr, to suppress defect-related recombination in wide-bandgap perovskites and optimized light management through interference control, including a bilayer structure.
- The result: These combined approaches achieved a certified power conversion efficiency of 32.22% for small-area devices and 26.97% for larger-area modules, with enhanced stability and reduced variability, advancing scalable photovoltaic technology.