Surface electronic properties of CdSe nanocrystallites

  • M. Nirmal
  • C. B. Murray
  • D. J. Norris
  • M. G. Bawendi
Article

Abstract

The surface electronic properties of CdSe nanocrystallites have been probed using low temperature and Zeeman spectroscopies. Fluorescence line narrowed spectra show dramatic changes between 1.75 and 10 K and also as a function of applied magnetic field. These effects are attributed to the localization of the photogenerated charge carriers on the surface. A simple model has been constructed to calculate the charge distribution within the nanocrystallite.

PACS

73.20.Dx 73.20.At 63.20.Kr 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    For references on recent theoretical works see for example Brus, L.E., Appl. Phys.A 53, 465 (1991).Google Scholar
  2. 2.
    Bawendi, M.G., Carroll, P.J., Wilson, William L., and Brus, L.E., J. Chem. Phys.96, 946 (1992).Google Scholar
  3. 3.
    O'Neil, M., Marohn, J., and Mclendon, G., J. Phys. Chem.,89, 3435 (1990).Google Scholar
  4. 4.
    Eychmuller, A., Hasselbrath, A., Katsikas, L., and Weller, H., Ber. Bunsenges. Phys. Chem.,95, 79 (1991).Google Scholar
  5. 5.
    Alivisatos, A.P., Harris, T.D., Carroll, P.J., Steigerwald, M.L., and Brus, L.E., J. Chem. Phys.90, 3463 (1989).Google Scholar
  6. 6.
    Mott, N.F., and Davis, E.A.,Electronic Processes in Non-Crystalline Materials (Clarendon, Oxford 1971).Google Scholar
  7. 7.
    Klein, M.C., Hache, F., Ricard, D., and Flytzanis, C., Phys. Rev. B42, 11123 (1990).Google Scholar
  8. 8.
    Nomura, S., and Kobayashi, T., Phys. Rev. B45, 1305 (1992).Google Scholar

Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • M. Nirmal
    • 1
  • C. B. Murray
    • 1
  • D. J. Norris
    • 1
  • M. G. Bawendi
    • 1
  1. 1.Department of ChemistryMITCambridge

Personalised recommendations