Preparation of oriented cadmium sulfide nanocrystals

(Note: The full text of this document is currently only available in the PDF Version )

Z. Y. Pan, G. J. Shen, L. G. Zhang, Z. H. Lu and J. Z. Liu


Abstract

Cadmium sulfide (CdS) particulate films, composed of highly oriented, rod-like nanocrystals have been generatedin situ by the exposure of stearic acid (SA) Langmuir monolayer-coated aqueous CdCl2 solutions to hydrogen sulfide (H2S). The SA-coated CdS particulate films were transferred to a solid substrate and examined by transmission electron microscopy (TEM) and Auger electron energy spectroscopy. It was found for the first time that the electron diffraction pattern was a composite one with six sets of diffraction patterns which were contributed by the different oriented CdS nanocrystals in these particulate films system. The epitaxial growth of rod-like CdS nanocrystals has been rationalized in terms of matching the d220 spacing of the cubic CdS crystals and the d10[1 with combining macron]0 spacing of the hexagonal closed-packed SA monolayer. The presence of a negatively charged monolayer at the air/water interface was an essential requirement for the oriented growth of CdS nanocrystals. This leads to a novel means of fabrication of highly oriented semiconductor quantum wires.


References

  1. L. E. Brus, IEEE J. Quantum Electron., 1986, 22, 1909 CrossRef.
  2. R. R. Chandler and J. L. Coffer, J. Phys. Chem., 1993, 97, 9767 CrossRef CAS.
  3. H. Weller, Angew. Chem., Int. Ed. Engl., 1993, 32, 41 CrossRef.
  4. A. Mews, A. Eychmuller, M. Giersig, D. Schooss and H. Weller, J. Phys. Chem., 1994, 98, 934 CrossRef CAS.
  5. Y. Wang and N. Herron, J. Phys. Chem., 1991, 95, 525 CrossRef CAS.
  6. H. Weller, Adv. Mater., 1993, 5, 88 CrossRef CAS.
  7. Y. Wang and N. Herron, Phys. Rev. B, 1992, 42, 42.
  8. L. Blus, Appl. Phys. A, 1991, 53, 465 Search PubMed.
  9. V. L. Clvin, A. N. Goldstein and A. P. Alivisatos, J. Am. Chem. Soc., 1992, 114, 5221 CrossRef CAS.
  10. J. R. Heath, Science, 1995, 270, 1315 CAS; C. B. Murray, C. R. Kagan and M. G. Bawendi, Science, 1995, 270, 1335 CrossRef CAS.
  11. C. R. Martin, Science, 1994, 266, 1961 CrossRef CAS.
  12. S. Mann, Nature (London), 1993, 365, 499 CrossRef CAS.
  13. I. Meriguchi, I. Tanaka, Y. Teraoka and S. Kagawa, J. Chem. Soc., Chem. Commun., 1991, 1401 RSC.
  14. X. K. Zhao, Y. Yuan and J. H. Fendler, J. Chem. Soc., Chem. Commun., 1990, 1248 RSC.
  15. X. K. Zhao, L. D. McCormick and J. H. Fendler, Chem. Mater., 1991, 3, 922 CrossRef CAS.
  16. X. K. Zhao and J. H. Fendler, Chem. Mater., 1991, 3, 168 CrossRef CAS.
  17. X. K. Zhao, S. Q. Xu and J. H. Fendler, Langmuir, 1991, 7, 520 CrossRef CAS.
  18. X. K. Zhao, L. D. McCormick and J. H. Fendler, Langmuir, 1991, 7, 1255 CrossRef CAS.
  19. X. K. Zhao and J. H. Fendler, J. Phys. Chem., 1991, 95, 3716 CrossRef CAS.
  20. X. K. Zhao and J. H. Fendler, J. Phys. Chem., 1992, 96, 9933 CrossRef CAS.
  21. J. Yang, J. H. Fendler, T. C. Jao and T. Laurion, Microsc. Res. Tech., 1994, 27, 402 CAS.
  22. B. R. Heywood, S. Rajam and S. Mann, J. Chem. Soc., Faraday Trans., 1991, 87, 727; 735 RSC.
  23. B. R. Heywood and S. Mann, J. Am. Chem. Soc., 1992, 114, 4681 CrossRef CAS.
  24. G. P. Luo, Z. M. Ai, J. J. Hawkes, Z. H. Lu and Y. Wei, Phys. Rev. B, 1993, 48, 15337 CrossRef CAS and refs. therein.
  25. Z. Y. Pan, X. G. Peng, Z. H. Wu, T. J. Li, M. Zhu and J. Z. Liu, Langmuir, 1996, 12, 851 CrossRef CAS.
  26. Z. Y. Pan, X. G. Peng, T. J. Li and J. Z. Liu, Chin. J. Sci. Instrum., 1996, 17, 153 Search PubMed.
  27. V. K. Gupta, J. A. Kornfield, A. Ferencz and G. Wegner, Science, 1994, 265, 940 CAS.
  28. A. P. Alivisatos, MRS Bull., 1995, XX, 23 Search PubMed.
  29. O. Osugi et al., Rev. Phys. Chem. Jpn., 1966, 36, 59 Search PubMed; Joint Committee on Power Diffraction Stands, 1971.
  30. J. B. Peng and G. T. Barnus, Thin Solid Films, 1994, 252, 44 CrossRef CAS.
  31. R. Viswanathan, L. L. Madsen, J. A. Zasadzinski and D. K. Schwartz, Science, 1995, 269, 51 CAS.
  32. Auger Electron Spectra Catalogue, A Data Collection of Elements, Anelva Corporation, 1979 Search PubMed.
  33. Y. Wang, Acc. Chem. Res., 1991, 24, 133 CrossRef CAS.
Click here to see how this site uses Cookies. View our privacy policy here.