Hot carriers from intra- and interband transitions in gold-silver alloy nanoparticles.

ABSTRACT: Hot electrons and holes generated from the decay of localised surface plasmons in metallic nanoparticles can be harnessed for applications in solar energy conversion and sensing. In this paper, we study the generation of hot carriers in large spherical gold-silver alloy nanoparticles using a recently developed atomistic modelling approach that combines a solution of Maxwell's equations with large-scale tight-binding simulations. We find that hot-carrier properties depend sensitively on the alloy composition. Specifically, nanoparticles with a large gold fraction produce hot carriers under visible light illumination while nanoparticles with a large silver fraction require higher photon energies to produce hot carriers. Moreover, most hot carriers in nanoparticles with a large gold fraction

SUBMITTER: Ramachandran S 

PROVIDER: S-EPMC11294548 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature