Diameter scaling of the optical band gap in individual CdSe nanowires

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Autor/in:
Erscheinungsjahr:
2011
Medientyp:
Text
Schlagworte:
  • Nanowires
  • Cadmium
  • Semiconductor nanowires
  • Nanocrystals
  • Semiconductor Quantum Dots
  • Zinc Sulfide
  • Nanowires
  • Cadmium
  • Semiconductor nanowires
  • Nanocrystals
  • Semiconductor Quantum Dots
  • Zinc Sulfide
Beschreibung:
  • The diameter dependence of the optical band gap of single CdSe nanowires (NWs) is investigated by a combination of atomic force microscopy, scanning fluorescence microscopy, and transmission electron microscopy. We find a good congruence of the experimental data to calculations within the effective mass approximation taking into account quantization, exciton Coulomb interaction, and dielectric mismatch. The experimental data are furthermore compared to different theoretical approaches. We discuss the influence of alternating wurtzite and zinc blende segments along the NWs on their optical properties. © 2011 American Chemical Society.
Lizenz:
  • info:eu-repo/semantics/closedAccess
Quellsystem:
Forschungsinformationssystem der UHH
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oai:www.edit.fis.uni-hamburg.de:publications/eac86e4b-4e65-4c54-8bdb-3b25da775057