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Electronic Structure of O-D Exciton Ground State in CdSe Nanocrystals

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Abstract

We present results on photoluminescence excitation spectra (PLE) of wurtzite CdSe nanocrystals (NCs) embedded in a glass with effective radii in the range 15-35 Å. Information on the near band-gap absorption of an assembly of NCs is obtained by selecting a narrow energy range in the inhomogeneously broadened photoluminescence band. The size and shape dependence of the lowest exciton states are calculated for slightly non-spherical wurtzite NCs. The experimental results are in good agreement with the theoretical predictions when both shape and size dispersions are taken into account.

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Authors and Affiliations

  1. Groupe de Physique des Solides, Universités Paris VI-VII, 75251, Paris, France

    M. Chamarro, M. Dib, C. Gourdon & P. Lavallard

  2. A.F. Ioffe Physical-Technical Institute, 194021 St Petersburg, Russian Federation

    O. Lublinskaya & A. I. Ekimov

Authors
  1. M. Chamarro
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  2. M. Dib
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  3. C. Gourdon
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  4. P. Lavallard
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  5. O. Lublinskaya
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  6. A. I. Ekimov
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Chamarro, M., Dib, M., Gourdon, C. et al. Electronic Structure of O-D Exciton Ground State in CdSe Nanocrystals. MRS Online Proceedings Library 452, 341–346 (1996). https://doi.org/10.1557/PROC-452-341

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  • DOI: https://doi.org/10.1557/PROC-452-341

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