Operando insights into stability of perovskite-based solar water splitting devices.

ABSTRACT: Perovskite-based solar water splitting systems are promising candidates for addressing environmental challenges, exceeding the commercialization efficiency of solar-to-hydrogen (STH) at >10%. However, the operational stability remains suboptimal due to insufficient in situ/operando insights into charge carrier dynamics. Here, we investigate the role of charge accumulation on operational stability through operando catalytic modulation via near-infrared (NIR) toggling on a photothermal catalyst. Electrochemical analyses under operando NIR toggling demonstrate enhanced hydrogen evolution reaction kinetics and reduced charge recombination. In situ analyses confirm that reduced charge accumulation suppresses ion migration in the perovskite layer, thereby enhancing operational stability. The NIR

SUBMITTER: Jeong CS 

PROVIDER: S-EPMC12905390 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature