Hostname: page-component-54dcc4c588-r5qjk Total loading time: 0 Render date: 2025-10-02T18:58:34.879Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Published online by Cambridge University Press:  15 February 2011

M. Chamarro ,
M. Dib ,
C. Gourdon ,
P. Lavallard ,
O. Lublinskaya  and
A. I. Ekimov
M. Chamarro
Affiliation:
Universités Paris VI-VII, Groupe de Physique des Solides, 75251 Paris France
M. Dib
Affiliation:
Universités Paris VI-VII, Groupe de Physique des Solides, 75251 Paris France
C. Gourdon
Affiliation:
Universités Paris VI-VII, Groupe de Physique des Solides, 75251 Paris France
P. Lavallard
Affiliation:
Universités Paris VI-VII, Groupe de Physique des Solides, 75251 Paris France
O. Lublinskaya
Affiliation:
A.F. Ioffe Physical-Technical Institute, 194021 St Petersburg, Russian Federation
A. I. Ekimov
Affiliation:
A.F. Ioffe Physical-Technical Institute, 194021 St Petersburg, Russian Federation
Get access

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.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 452 , 1996 , 341
Copyright
Copyright © Materials Research Society 1997

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

REFERENCES

1Richard, T., Lefebvrc, P., Mathieu, H. and Allègre, J., Phys. Rev. B 53, 7287, (1996).and ref. thereinGoogle Scholar
2Xia, J.B., J. Lumin. 70, 120, (1996) and ref. therein.Google Scholar
3Takagahara, , Phys. Rev. B47, 4569 (1993)Google Scholar
4Nirmal, M., Noms, D.J., Kuno, M. and Bawendi, M.G., Efros, Al.L. and Rosen, M., Phys. Rev. Lett, 75, 3728, (1995)Google Scholar
5Efros, Al.L., Rosen, M., Kuno, M., Nirmal, M., Norris, D.J. and Bawendi, M., Phys. Rev. B 54, 4843, (1996).Google Scholar
6Murray, C.B., Norris, D.B. and Bawendi, M.G., J. Am. Chem. Soc. 115, 8706, (1993).Google Scholar
Bowen Katari, J.E., Colvin, V.L. and Alivisatos, A.P., J. Phys. Chem. 98, 4109, (1994)Google Scholar
7Ekimov, A., J. Lum. 70, 1, (1996)Google Scholar
8Norris, D.J., Sacra, A., Murray, C.B. and Bawendi, M.G., Phys. Rev. Lett. 72, 2612, (1994)Google Scholar
9Ekimov, A.I., Phys. Scr. 39, 217, (1991).Google Scholar
10Noms, D.J. and Bawendi, M.G., Phys. Rev. B 53, 16338, (1996)Google Scholar
11Bawendi, M.G., Wilson, W.L., Rothberg, L., Carroll, P.J., Jedju, T.M., Stegerwald, M.L. and Brus, L.E., Phys. Rev. Lett 65, 1623 (1990).Google Scholar
12Chamarro, M., Gourdon, C., Lavallard, P. and Ekimov, A.I., Jpn. J. Appl. Phys. 34, Suppl. 34–1, 12 (1995).Google Scholar
Chamarro, M., Goudon, C., Lavallard, P., Lublinskaya, O. and Ekimov, A.I., Phys. Rev. B53, 1336,(1996)Google Scholar
13Nirmal, M., Norris, D.J., Kuno, M. and Bawendi, M.G., Phys. Rev. Lett, 75, 3728, (1995)Google Scholar
14Gandais, M., private communication.Google Scholar
15Efros, Al., Phys. Rev. B 46, 7448, (1992).Google Scholar
16Chamarro, M., Gourdon, C. and Lavallard, P., J. Lum. 70, 222, (1996)Google Scholar
17Norris, D.J., Efros, Al.L., Rosen, M. and Bawendi, M.G.. Phys. Rev. B 53, 16347, (1996).Google Scholar
18Goupalov, S.V., Ivchenco, E.L. and Kavokin, A.V.: Superlattices and Microstructure. (to be published)Google Scholar