CsPbBr₃ Nanocrystals as Bottom Interface Nucleation Seeds for Printing Oriented FAPbI₃ Thin Films: An In Situ Study.

ABSTRACT: The exceptional optoelectronic properties of lead halide perovskites are highly sensitive to processing conditions, as uncontrolled crystallization driven by random nucleation often results in defect-rich active layers that impair device performance. Achieving controlled and oriented crystallization in printed films remains a major challenge. To address this, we introduce a pre-deposited CsPbBr₃ nanocrystal seed layer at the bottom interface to guide crystallization and suppress defect formation. This strategy is evaluated via an in situ study on FAPbI₃, offering mechanistic insights into the influence of seeding on film growth and optoelectronic quality. Using in situ grazing-incidence wide-angle X-ray scattering, transmission-mode UV-vis absorption, and photolumines

SUBMITTER: Buyan-Arivjikh A 

PROVIDER: S-EPMC12490184 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature