Plasmon-assisted mechanism of coupling in ensembles of quantum dots

A. A. Lyamkina, S. P. Moshchenko

Research output: Contribution to journalArticlepeer-review

Abstract

Structural and optical properties of hybrid structures with multiple layers of semiconductor InAs/AlGaAs quantum dots and indium clusters on the surface are investigated. Before we have shown that in such hybrid structures strong exciton-plasmon interaction takes place. It results in non-radiative energy transfer to a large quantum dot that acts as an acceptor and the consequent enhancement of the long-wavelength photoluminescence that was obtained in our experiments. Here, we demonstrate vertical alignment of indium clusters over quantum dots with direct method of scanning transmission electron microscopy. Analysis of photoluminescence spectra reveals that the main contribution to exciton-plasmon interaction is provided by the upper layer of quantum dots located near metal particles.

Original languageEnglish
Pages (from-to)11336-11340
Number of pages5
JournalMaterials Today: Proceedings
Volume4
Issue number11
DOIs
Publication statusPublished - 1 Jan 2017

Keywords

  • Exciton-plasmon interaction
  • Plasmon resonance
  • Quantum dot
  • exciton-plasmon interaction
  • quantum dot
  • plasmon resonance
  • CLUSTER

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