Dimensional Seed Engineering of Strain in Wide-Bandgap Perovskites for Efficient and Stable Tandem Solar Cells
Wide-bandgap (WBG) perovskites are essential for all-perovskite tandem solar cells, but their performance remains limited by defect-assisted nonradiative recombination, halide segregation, and residual lattice strain. Here, we develop a dimensional seed-guided strategy to regulate the crystallization pathway and stra...