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

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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.

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Acknowledgments

This work has been supported by RFBR 12–02031922. Elena Vashchenko is grateful to DAAD for a scholarship and the hospitality of Kassel University’s staff. Discussions with V.V. Khromov, S.G. Przhibelskii, and N.B. Leonov are gratefully acknowledged.

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Authors and Affiliations

  1. St. Petersburg State University of Information Technologies, Mechanics and Optics, St. Petersburg, Russia

    E. V. Vashchenko & T. A. Vartanyan

  2. Institut für Physik und Center for Interdisciplinary Nanostructure Science and Technology—CINSaT, Universität Kassel, Kassel, Germany

    F. Hubenthal

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  1. E. V. Vashchenko
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  2. T. A. Vartanyan
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  3. F. Hubenthal
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Correspondence to E. V. Vashchenko.

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Vashchenko, E.V., Vartanyan, T.A. & Hubenthal, F. Photoconductivity of Silver Nanoparticle Ensembles on Quartz Glass (SiO2) Supports Assisted by Localized Surface Plasmon Excitations. Plasmonics 8, 1265–1271 (2013). https://doi.org/10.1007/s11468-013-9544-8

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  • DOI: https://doi.org/10.1007/s11468-013-9544-8

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