Unknown

Dataset Information

0

Hot-Carrier Generation in Plasmonic Nanoparticles: The Importance of Atomic Structure.


ABSTRACT: Metal nanoparticles are attractive for plasmon-enhanced generation of hot carriers, which may be harnessed in photochemical reactions. In this work, we analyze the coherent femtosecond dynamics of photon absorption, plasmon formation, and subsequent hot-carrier generation through plasmon dephasing using first-principles simulations. We predict the energetic and spatial hot-carrier distributions in small metal nanoparticles and show that the distribution of hot electrons is very sensitive to the local structure. Our results show that surface sites exhibit enhanced hot-electron generation in comparison to the bulk of the nanoparticle. Although the details of the distribution depend on particle size and shape, as a general trend, lower-coordinated surface sites such as corners, edges, and {100} facets exhibit a higher proportion of hot electrons than higher-coordinated surface sites such as {111} facets or the core sites. The present results thereby demonstrate how hot carriers could be tailored by careful design of atomic-scale structures in nanoscale systems.

SUBMITTER: Rossi TP 

PROVIDER: S-EPMC7458472 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature

altmetric image

Publications

Hot-Carrier Generation in Plasmonic Nanoparticles: The Importance of Atomic Structure.

Rossi Tuomas P TP   Erhart Paul P   Kuisma Mikael M  

ACS nano 20200730 8


Metal nanoparticles are attractive for plasmon-enhanced generation of hot carriers, which may be harnessed in photochemical reactions. In this work, we analyze the coherent femtosecond dynamics of photon absorption, plasmon formation, and subsequent hot-carrier generation through plasmon dephasing using first-principles simulations. We predict the energetic and spatial hot-carrier distributions in small metal nanoparticles and show that the distribution of hot electrons is very sensitive to the  ...[more]

Similar Datasets

| S-EPMC5770161 | biostudies-literature
| S-EPMC7877730 | biostudies-literature
| S-EPMC8157927 | biostudies-literature
| S-EPMC7885732 | biostudies-literature
| S-EPMC4674755 | biostudies-literature
| S-EPMC9424280 | biostudies-literature
| S-EPMC6107582 | biostudies-literature
| S-EPMC4284641 | biostudies-other
| S-EPMC10441571 | biostudies-literature
| S-EPMC3498448 | biostudies-literature