Plasmonics

, Volume 8, Issue 2, pp 1265–1271 | Cite as

Photoconductivity of Silver Nanoparticle Ensembles on Quartz Glass (SiO2) Supports Assisted by Localized Surface Plasmon Excitations

  • E. V. Vashchenko
  • T. A. Vartanyan
  • F. Hubenthal
Article

Abstract

We have studied the conductivity and photoconductivity in silver nanoparticle ensembles on quartz glass substrates. We observed a significant increase of the photoconductivity if the localized surface plasmon resonance in the metal nanoparticles was excited. A detailed analysis of the temperature dependence of the conductivity as well as dependences of the conductivity and photoconductivity on the amount of deposited metal led to the mechanism of the charge transfer in these structures. We found that the primary role in this mechanism is due to defects in the quartz glass structure which act as traps for electrons.

Keywords

Silver nanoparticle ensembles Photoconductivity Plasmon resonance Traps Hopping conductivity Activation energy 

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • E. V. Vashchenko
    • 1
  • T. A. Vartanyan
    • 1
  • F. Hubenthal
    • 2
  1. 1.St. Petersburg State University of Information Technologies, Mechanics and OpticsSt. PetersburgRussia
  2. 2.Institut für Physik und Center for Interdisciplinary Nanostructure Science and Technology—CINSaTUniversität KasselKasselGermany

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