Neutral buffered electrolytes guarantee ideal band-edge pinning for semiconductor photoanodes.

ABSTRACT: The photoelectrochemical (PEC) processes occurring in semiconductor photoelectrodes have been regarded as similar to the physical processes occurring at the semiconductor/metal interfaces. In contrast, the physicochemical processes occurring in the electrolyte have been considered to be unaffected by the (photo)electrode materials that are employed. We found that these "ideal" situations are not always guaranteed during performing the actual PEC reaction. That is, the present study based on impedance and hydrodynamic voltammetry analyses proposes that the band diagram at the interface between a semiconductor photoanode and an electrolyte can be affected by transient physicochemical phenomena in the electrolyte during the PEC oxygen evolution reaction. Specifically, in the case that a neutr

SUBMITTER: Kageshima Y 

PROVIDER: S-EPMC12257357 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature