Elongated grain morphology for efficient and radiant NIR-II Sn-based perovskite light-emitting diodes
Zhanhua Wei
Nature Communications, Published online: 05 May 2026; doi:10.1038/s41467-026-72625-z Guan et al. report a molecular regulator to control crystallization kinetics in Sn-based perovskite, resulting in elongated island-like grain structure that regulates charge injection and recombination, enabling NIR-II LEDs with efficiency of 10.7%, peak radiance of 173 W sr-1 m-2, and operational lifetime of 1,378 min.