Environment-assisted quantum transport of excitons in perovskite nanocrystal superlattices.

ABSTRACT: Transport of energy carriers in solid-state materials is determined by their wavefunctions and interactions with the environment. While quantum transport theory has predicted distinct transport in the intermediate coupling regime resulting from the intricate interplay between coherent wave-like and incoherent particle-like mechanisms, these predictions are awaiting experimental evidence. Here we demonstrate quantum transport signatures in perovskite nanocrystal superlattices by imaging exciton propagation with high spatial and temporal resolutions over 7-298 K. At 7 K, coherent propagation of the excitons dominates, with transient ballistic motion within a coherence length of up to 40 nanocrystal sites. The interference of the wave-like motion leads to Anderson Localization in the long-tim

SUBMITTER: Blach DD 

PROVIDER: S-EPMC11788439 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature