Solvent-dripping modulated 3D/2D heterostructures for high-performance perovskite solar cells
Chang, X., Azmi, R., Yang, T. et al. Solvent-dripping modulated 3D/2D heterostructures for high-performance perovskite solar cells. Nat Commun 16, 1042 (2025). https://doi.org/10.1038/s41467-025-56409-5
The goal of this study was to develop high-performance perovskite solar cells (PSCs) by creating highly ordered 3D/2D perovskite heterostructures through solvent-dripping and a novel meta-amidinopyridine (MAP) ligand, targeting enhanced efficiency and operational stability.
Key findings demonstrated that the MAP ligand and solvent post-dripping approach enabled the formation of a phase-pure, highly ordered 2D perovskite layer atop the 3D perovskite. This strategy significantly reduced interfacial defects, enhanced ferroelectric properties, and improved carrier extraction. As a result, PSCs achieved a maximum power conversion efficiency (PCE) of 26.05% (certified at 25.44%), with impressive operational stability—retaining 82% of the initial PCE after 1000 hours under damp heat conditions and 75% after 840 hours of outdoor testing.
Fluxim’s Paios system was used for transient photocurrent (TPC) and photo-CELIV measurements, providing precise insights into charge carrier mobility, extraction efficiency, and recombination dynamics. The reliable time-resolved data from Paios were crucial for correlating device architecture modifications with improved photovoltaic performance.
These findings are important because they present a scalable, simple strategy to significantly boost the efficiency and durability of perovskite solar cells, offering a clear path toward commercial viability.