Interfacial Co-Operativity Enables Ultrafast Charge Transfer Within the Co-Fe Prussian Blue Analogue|Zno Heterostructure.

ABSTRACT: Heterostructures of Cobalt-Iron (Co-Fe) Prussian blue analogues (PBA) and inorganic semiconductors are attractive materials for photocatalytic and photoelectrochemical water oxidation. Their efficiency is rooted in the charge transfer (CT) at the PBA|semiconductor interface. The interfacial CT, however, often suffers from sluggish kinetics, optimization of which has been elusive. In this work, we investigate PBA|ZnO heterostructures spectroscopically and show that tuning the interfacial composition of the heterostructure presents a synthetic handle to significantly improve interfacial CT. We employ ultrafast transient absorption (TA) spectroscopy to probe the CT kinetics, while interface-sensitive vibrational spectroscopy, that is, time-resolved and in-situ vibrational sum-frequency genera

SUBMITTER: De R 

PROVIDER: S-EPMC12451413 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature