Optics and Spectroscopy

, Volume 120, Issue 3, pp 477–481 | Cite as

Optical Properties of Planar Nanostructures Based on Semiconductor Quantum Dots and Plasmonic Metal Nanoparticles

  • A. G. Bakanov
  • N. A. Toropov
  • T. A. Vartanyan
Physical Optics


The optical properties of a composite material consisting of a thin polymer film, which is activated by semiconductor CdSe/ZnS quantum dots (QDs) and silver nanoparticles, on a transparent dielectric substrate have been investigated. It is revealed that the presence of silver nanoparticles leads to an increase in the QD absorption (by a factor of 4) and in the fluorescence intensity (by a factor of 10), whereas the fluorescence time drops by a factor of about 10. Excitation of the composite medium by a pulsed laser is found to result in narrowing of the fluorescence band and a sublinear dependence of its intensity on the pulse energy. In the absence of silver nanoparticles, the fluorescence spectrum of QDs is independent of the excitation-pulse energy density, and the fluorescence intensity depends linearly on the pulse energy in the entire range of energy densities, up to 75 mJ/cm2.


PMMA Silver Nanoparticles Optical Parametric Oscillator Quartz Substrate PMMA Layer 
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Copyright information

© Pleiades Publishing, Ltd. 2016

Authors and Affiliations

  • A. G. Bakanov
    • 1
  • N. A. Toropov
    • 1
  • T. A. Vartanyan
    • 1
  1. 1.ITMO UniversitySt. PetersburgRussia

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