Plasmon emission in photoexcited gold nanoparticles

E. Dulkeith, T. Niedereichholz, T. A. Klar, J. Feldmann, G. von Plessen, D. I. Gittins, K. S. Mayya, and F. Caruso
Phys. Rev. B 70, 205424 – Published 22 November 2004

Abstract

Light emission at the particle plasmon frequency is observed in optically excited spherical gold nanoparticles. We find a photoluminescence efficiency of 106, which is essentially independent of particle size and four orders of magnitude higher than the efficiencies determined from metal films. Our experimental findings are explained with a process in which excited d-band holes recombine nonradiatively with sp electrons, emitting particle plasmons. These plasmons subsequently radiate, giving rise to the photoluminescence observed in the experiment. We determine the quantum efficiencies involved in this process.

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  • Received 2 July 2004

DOI:https://doi.org/10.1103/PhysRevB.70.205424

©2004 American Physical Society

Authors & Affiliations

E. Dulkeith, T. Niedereichholz, T. A. Klar, and J. Feldmann

  • Photonics and Optoelectronics Group, Physics Department and CeNS, Ludwig-Maximiliams-Universität Münchën, 80799 Munich, Germany

G. von Plessen

  • 1. Physikalisches Institut, RWTH Aachen, 52056 Aachen, Germany

D. I. Gittins*, K. S. Mayya, and F. Caruso

  • Max-Planck-Institute of Colloids and Interfaces, 14424 Potsdam, Germany

  • *Present address: Imerys s.A., Global Research, Par Moor Laboratories, Cornwall, PL24 2SQ, UK.
  • Present address: Process Development Team, Memory Division, Device Solution Network, Samsung Electronics Co., Ltd., San #24 Nongseo-Ri, Giheung-Eup, Yongin-City, Gyeonggi-Do 449–711, Republic of Korea.
  • Present address: Department of Chemical and Biomolecular Engineering, The University of Melbourne, Victoria 3010, Australia.

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Issue

Vol. 70, Iss. 20 — 15 November 2004

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