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Structural transformations in II-VI semiconductor nanocrystals

  • C. Ricolleau
  • L. Audinet
  • M. Gandais
  • T. Gacoin
Conference paper

Abstract

Colloidal CdS and CdS/ZnS nanostructures were obtained by nucleation and growth in colloidal solution. Their mean sizes range between 3 and 10 nm. The structural properties were studied by the use of high-resolution transmission electron microscopy (HRTEM). Phase transition between the metastable cubic blende-type structure and the stable hexagonal wurtzite-type structure was evidenced to be a function of the size of the CdS clusters. The mechanism of the transition involving stacking faults was determined by the heating of CdS clusters at 200 °C for 30 h. Results concerning structural relations between CdS and ZnS that occur during the epitaxial growth of ZnS on the CdS nanocrystals showed the existence of the hexagonal structure of ZnS, which is the high-temperature phase of ZnS.

PACS

61.46.+w Clusters, nanoparticles, and nanocrystalline materials 68.35.Rh Phase transitions and critical phenomena 61.16.Bg Transmission, reflection and scanning electron microscopy (including EBIC) 

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Reference

  1. 1.
    R K Jam P.C. Lind: J. Opt. Soc. Am. 73 (5), 647 (1983)ADSCrossRefGoogle Scholar
  2. 2.
    P. Lianos„J.K. Thomas: Chem. Phys. Lett. 125, 290 (1986)ADSCrossRefGoogle Scholar
  3. 3.
    T. Gacoin, C. Train, F. Chaput, J.P. Boilot, P. Aubert, M. Gandais, Y. Wang, A. Lecomte: SPIE Sol-Gel Opt. 1758, 565 (1992)ADSCrossRefGoogle Scholar
  4. 4.
    T. Gacoin, L. Mauler, G. •ounio, S. Esnouf, J.P. Boilot, L. Audinet, C. Ricolleau, M. G.ndais: Mater. Res. Soc. Symp. Proc. 435, 643 (1996)Google Scholar
  5. 5.
    C. Ricolleau, L. Audinet, M. Gandais, T. Gacoln, J.P. Boilot, M. Charnarro; J. Cryst. Growth 159, 861 (1996)ADSCrossRefGoogle Scholar
  6. 6.
    B. Mutaftschiev: in Handbook of Crystal Growth, ed. by D.T.J. Hurle ( North-Holland, Amsterdam 1993 )Google Scholar
  7. 7.
    M.G. Bawendi, A.R. Kortan, M.L. Steigerwald, L.E. Brus: J. Chem. Phys. 91 (11), 7282 (1989)ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Italia 1999

Authors and Affiliations

  • C. Ricolleau
    • 1
  • L. Audinet
    • 1
  • M. Gandais
    • 1
  • T. Gacoin
    • 2
  1. 1.Laboratoire de Minéralogie-Cristallographie de ParisUniversités Paris 6 et Paris 7CNRS UMR 7590, Case 115, 4 Place JussieuParis Cédex 05France
  2. 2.Laboratoire de Physique de la Matière CondenséeEcole PolytechniquePalaiseau CédexFrance

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