Steric Engineering of Exciton Fine Structure in 2D Perovskites (Adv. Energy Mater. 9/2025)

2D Perovskites

In article number 2404769, Mateusz Dyksik, Paulina Plochocka, and co-workers present a comprehensive study on the interplay between the excitonic fine structure of layered perovskites and distortions in the perovskite lattice, the latter of which can be controlled via the steric size of the molecular cation. Here, the spider plays the role of the organic cation, manipulating and distorting the structure of its perovskite prey before storing it for later. The light entering the cave represents the experimental optical probes used in this work, unravelling the secrets of these perovskites.