On the behaviour of Au plasmonic nanoparticles during hydrogen evolution at p-Si

Published

Journal Article

Brewster Angle Reflectometry (BAR) and spectral photocurrent analysis show that Au nanoparticles are in a resonant state during light-induced hydrogen evolution with unpolarized light near-normal incidence. Keggin-type phosphododecamolybdate (PMo 12 O 403- ) anions were used as reducing and stabilizing agents to form novel Au nanoparticles (Au-NPs). BAR was employed to analyze the resonant optical response after adsorption to the surface of hydrogen terminated p-Si(111):H (1 × 1) and SiO 2 . Proton reduction in 1 M H 2 SO 4 occurs at asymmetric Au-NPs where also multipole field effects influence the plasmonic behaviour. In a comparative discussion, the contribution of surface plasmon polariton excitation to the observed pronounced photocurrent enhancement is outlined. © 2010 Elsevier B.V.

Full Text

Duke Authors

Cited Authors

  • Lublow, M; Skorupska, K; Zoladek, S; Kulesza, PJ; Vo-Dinh, T; Lewerenz, HJ

Published Date

  • October 1, 2010

Published In

Volume / Issue

  • 12 / 10

Start / End Page

  • 1298 - 1301

International Standard Serial Number (ISSN)

  • 1388-2481

Digital Object Identifier (DOI)

  • 10.1016/j.elecom.2010.07.004

Citation Source

  • Scopus