Front Cover: Giant‐Domain Perovskite Films via Reduced‐Temperature Meniscus‐Guided Coating: Fluid‐Dynamic Control of Supersaturation (Sol. RRL 6/2026)

Perovskite Films The image illustrates the synergy between fluid dynamic simulations and large-area meniscus coating processes. The bottom streamlines represent the theoretical modeling of precursor flow, which directly informs the precision of the bar-coating process shown in the center. This optimized deposition leads to the formation of highly ordered spherulitic crystal structures (top-left inset), paving the way for efficient and scalable perovskite solar cells. More in article number e202600003, Kenjiro Fukuda and co-workers.