Relaxation lifetimes of plasmonically enhanced hybrid gold-carbon nanotubes systems

M. Glaeske, M. Kumar, T. Bisswanger, S. Vaitiekenas, C. Soci, R. Narula, A. Bruno, A. Setaro

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Abstract

Recently, we introduced a novel hybridization route for carbon nanotubes using gold nanoparticles, whose close proximity neatly enhances their radiative emission. Here we investigate the mechanisms behind the enhancement by monitoring the de-excitation dynamics of our π-hybrids through two-color pump-probe time-resolved spectroscopy. The de-excitation process reveals a fast component and a slow component. We find that the presence of gold prominently affects the fast processes, indicating a stronger influence of the gold nanoparticle on the intra-band non-radiative relaxation than on the inter-band recombination of the single-walled carbon nanotube. By evaluating the de-excitation times, we estimate the balance between near-field pumping and the faster metal-induced de-excitation contributions, proving the enhanced pumping to be the leading mechanism.
Original languageEnglish
Article number255202
Pages (from-to)-
JournalNanotechnology
Volume28
Issue number25
DOIs
Publication statusPublished - 1 Jun 2017

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All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

Cite this

Glaeske, M., Kumar, M., Bisswanger, T., Vaitiekenas, S., Soci, C., Narula, R., Bruno, A., & Setaro, A. (2017). Relaxation lifetimes of plasmonically enhanced hybrid gold-carbon nanotubes systems. Nanotechnology, 28(25), -. [255202]. https://doi.org/10.1088/1361-6528/aa7409