Exciton energy transfer in pairs of single-walled carbon nanotubes

Nano Lett. 2008 May;8(5):1363-7. doi: 10.1021/nl080048r. Epub 2008 Mar 27.

Abstract

We studied the exciton energy transfer in pairs of semiconducting nanotubes using high-resolution optical microscopy and spectroscopy on the nanoscale. Photoluminescence from large band gap nanotubes within bundles is observed with spatially varying intensities due to distance-dependent internanotube transfer. The range of efficient energy transfer is found to be limited to a few nanometers because of competing fast nonradiative relaxation responsible for low photoluminescence quantum yield.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Computer Simulation
  • Crystallization / methods*
  • Electron Transport
  • Energy Transfer
  • Macromolecular Substances / chemistry
  • Materials Testing
  • Models, Chemical*
  • Molecular Conformation
  • Nanotechnology / methods*
  • Nanotubes, Carbon / chemistry*
  • Nanotubes, Carbon / ultrastructure*
  • Particle Size

Substances

  • Macromolecular Substances
  • Nanotubes, Carbon