Impact of water solvation on the charge carrier dynamics of organic heterojunction photocatalyst nanoparticle dispersions.

ABSTRACT: Organic heterojunction nanoparticles (NP) have recently gained significant interest as photocatalysts for visible light-driven hydrogen production. Whilst promising photocatalytic efficiencies have been reported for aqueous NP dispersions, the underlying dynamics of photogenerated charges in such organic heterojunction photocatalysts and how these might differ from more widely studied dry heterojunction films remain relatively unexplored. In this study, we combine transient optical spectroscopies over twelve orders of magnitude in time, using pulsed and continuous light illumination, to elucidate the differences in the charge carrier dynamics of heterojunction NP dispersions, dried NP films, and bulk heterojunction films prepared by spin coating. The ultrafast fast (ps to ns) transient abs

SUBMITTER: Gonzalez-Carrero S 

PROVIDER: S-EPMC11514576 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature