Tailoring Hot-Carrier Distributions of Plasmonic Nanostructures through Surface Alloying.

ABSTRACT: Alloyed metal nanoparticles are a promising platform for plasmonically enabled hot-carrier generation, which can be used to drive photochemical reactions. Although the non-plasmonic component in these systems has been investigated for its potential to enhance catalytic activity, its capacity to affect the photochemical process favorably has been underexplored by comparison. Here, we study the impact of surface alloy species and concentration on hot-carrier generation in Ag nanoparticles. By first-principles simulations, we photoexcite the localized surface plasmon, allow it to dephase, and calculate spatially and energetically resolved hot-carrier distributions. We show that the presence of non-noble species in the topmost surface layer drastically enhances hot-hole generation at the surfa

SUBMITTER: Fojt J 

PROVIDER: S-EPMC10906084 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature