Ligand-mediated modification of the electronic structure of CdSe quantum dots

Nano Lett. 2012 Jun 13;12(6):2763-7. doi: 10.1021/nl300886h. Epub 2012 May 18.

Abstract

X-ray absorption spectroscopy and ab initio modeling of the experimental spectra have been used to investigate the effects of surface passivation on the unoccupied electronic states of CdSe quantum dots (QDs). Significant differences are observed in the unoccupied electronic structure of the CdSe QDs, which are shown to arise from variations in specific ligand-surface bonding interactions.

Publication types

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

MeSH terms

  • Cadmium Compounds / chemistry*
  • Computer Simulation
  • Equipment Design
  • Equipment Failure Analysis
  • Ligands
  • Models, Chemical*
  • Nanostructures / chemistry*
  • Nanostructures / ultrastructure*
  • Quantum Dots*
  • Selenium Compounds / chemistry*

Substances

  • Cadmium Compounds
  • Ligands
  • Selenium Compounds
  • cadmium selenide