Promoted Growth and Multiband Emission in Heterostructured Perovskites Through Cs⁺ -Sublattice Interaction.

ABSTRACT: Precise control of exciton confinement in metal halide perovskites is critical to the development of high-performance, stable optoelectronic devices. A significant hurdle is the swift completion of ionic metathesis reactions, often within seconds, making consistent control challenging. Herein, the introduction of different steric hindrances in a Cs⁺ sublattice within CsYb₂ F₇ is reported, which effectively modulates the reaction rate of Cs⁺ with lead (Pb²⁺ ) and halide ions in solution, extending the synthesis time for perovskite nanostructures to tens of minutes. Importantly, the Cs⁺ sublattice provides a crystal facet-dependent preference for perovskite growth and thus exciton confinement, allowing the simultaneous occurre

SUBMITTER: Zhou L 

PROVIDER: S-EPMC10797418 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature