Phase Distribution in Quasi‐2D Dion Jacobson Perovskite Dictates Ultrafast Energy Transfer and Directional Charge Transport (Adv. Mater. Interfaces 21/2025)

Efficient charge transfer at heterostructure interfaces is crucial for optoelectronic devices. Quasi-2D perovskites with varied layer thicknesses form multiple interfaces, hindering transport. Transient absorption spectroscopy reveals strategic phase distribution enables ultrafast energy transfer across phases and narrow-band emission from high-n phases. Photocurrent and surface potential change indicates directional charge transport exhibits in Quasi-2D perovskites, underscoring the impact of phase distribution on device performance. More details can be found in the Research Article by Sachin R. Rondiya and co-workers (DOI: 10.1002/admi.202500108).