Columnar Liquid Crystal Enables In‐Situ Dispersing of Excess PbI2 Crystals for Efficient and Stable Perovskite Solar Cells (Adv. Energy Mater. 8/2024)

Perovskite Solar Cells In article number 2303166, Hongli Liu and co-workers developed a columnar liquid crystal, in situ dispersing the excess PbI2 component in perovskite. Target perovskite gains optimal crystallization, released residual stress, and less defects with no aggregated PbI2 crystals, leading to efficient carrier transfer. The optimized perovskite solar cells achieve a power conversion efficiency of 24.27% with preferable stability.