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Electron Microscopy Study of Exotic Nanostructures of Cadmium Sulfide

Published online by Cambridge University Press:  08 March 2005

Lifeng Dong  and
Jun Jiao
Lifeng Dong
Affiliation:
Department of Physics, Portland State University, Portland, OR 97207-0751, USA
Jun Jiao
Affiliation:
Department of Physics, Portland State University, Portland, OR 97207-0751, USA
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Abstract

In this article, two simple methods, evaporation-condensation and catalytic thermal evaporation, were used to investigate the synthesis of CdS nanostructures for nanoscale optoelectronic applications. To understand their growth mechanisms, various electron microscopy and microanalysis techniques were utilized in characterizing their morphologies, internal structures, growth directions and elemental compositions. The electron microscopy study reveals that when using the evaporation-condensation method, branched CdS nanorods and self-assembled arrays of CdS nanorods were synthesized at 800°C and 1000°C, respectively. Instead of morphological differences, both types of CdS nanorods grew along the [0001] direction. However, when using the catalytic thermal evaporation method (Au as the catalyst), patterned CdS nanowires and nanobelts were formed at the temperature region of 500–600°C and 600–750°C, respectively. Their growth direction was along the direction [1010] instead of [0001]. Based on the microscopy and microanalysis results, we propose some growth mechanisms in relation to the growth processes of those exotic CdS nanostructures.

Keywords

CdSnanowiresnanorodsnanobeltselectron microscopymicroanalysis
Type
MATERIALS APPLICATIONS
Information
Microscopy and Microanalysis , Volume 11 , Issue 2 , April 2005 , pp. 116 - 123
Copyright
© 2005 Microscopy Society of America

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References

REFERENCES

Campbell, W.B. (1970). Growth of whiskers by vapor-phase reactions. In Whisker Technology, Levitt, A.P. (Ed.), pp. 15–46. New York: John Wiley & Sons, Inc.
Dong, L.F., Gushtyuk, T., & Jiao, J. (2004). Synthesis, characterization, and growth mechanism of self-assembled dendritic CdS nanorods. J Phys Chem B 108, 1617–1620.Google Scholar
Dong, L.F., Jiao, J., Coulter, M., & Love, L. (2003a). Catalytic growth of CdS nanobelts and nanowires on tungsten substrates. Chem Phys Lett 376, 653–658.Google Scholar
Dong, L.F., Jiao, J., Tuggle, D.W., Petty, J., Elliff, S.A., & Coulter, M. (2003b). ZnO nanowires formed on tungsten substrates and their electron field emission properties. Appl Phys Lett 82, 1096–1098.Google Scholar
Duan, X.F., Huang, Y., Agarwal, R., & Lieber, C.M. (2003). Single-nanowire electrically driven lasers. Nature 421, 241–245.Google Scholar
Jiao, J., Dong, L.F., Tuggle, D.W., Petty, J., Love, L., & Coulter, M. (2003). Synthesis of SiO2 nanowires and CdS/SiO2 composite nanowires and investigation of their electron field emission properties. Mat Res Soc Symp Proc 739, 5.4.1–5.4.6.Google Scholar
Jun, Y., Lee, S., Kang, N., & Cheon, J. (2001). Controlled synthesis of multi-armed CdS nanorod architectures using monosurfactant system. J Am Chem Soc 123, 5150–5151.Google Scholar
Peng, Z.A. & Peng, X.G. (2001). Formation of high-quality CdTe, CdSe, and CdS nanocrystals using CdO as precursor. J Am Chem Soc 123, 183–184.Google Scholar
Wagner, R.S. (1970). VLS mechanism of crystal growth. In Whisker Technology, Levitt, A.P. (Ed.), pp. 47–119. New York: John Wiley & Sons, Inc.
Wagner, R.S. & Ellis, W.C. (1964). Vapor–liquid–solid mechanism of single crystal growth. Appl Phys Lett 4, 89–90.Google Scholar
Xu, D.S., Xu, Y.J., Chen, D.P., Guo, G.L., Gui, L.L., & Tang, Y.Q. (2000). Preparation of CdS single-crystal nanowires by electrochemically induced deposition. Adv Mater 12, 520–522.Google Scholar
Zhan, J.H., Yang, X.G., Wang, D.W., Li, S.D., Xie, Y., Xia, Y.N., & Qian, Y.T. (2000). Polymer-controlled growth of CdS nanowires. Adv Mater 12, 1348–1351.Google Scholar