Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-29T07:32:47.075Z Has data issue: false hasContentIssue false
  • English
  • Français

Vapor-Phase Synthesis and Surface Functionalization of ZnSe Nanoparticles in a Counterflow Jet Reactor

Published online by Cambridge University Press:  01 February 2011

Christos Sarigiannidis ,
Athos Petrou  and
T. J. Mountziaris
Christos Sarigiannidis
Affiliation:
Departments of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo N.Y 14260, U.S.A.
Athos Petrou
Affiliation:
Departments of Physics, University at Buffalo, The State University of New York, Buffalo N.Y 14260, U.S.A.
T. J. Mountziaris
Affiliation:
Departments of Chemical and Biological Engineering, University at Buffalo, The State University of New York, Buffalo N.Y 14260, U.S.A. The National Science Foundation, 4201 Wilson Boulevard, Arlington, VA 22230, U.S.A.
Get access

Abstract

Compound semiconductor nanocrystals (quantum dots) exhibit unique size-dependent optoelectronic properties making them attractive for a variety of applications, including ultrasensitive biological detection, high-density information storage, solar energy conversion, and photocatalysis. There is presently a great need for developing scalable techniques that allow efficient synthesis, size control, and functionalization of quantum dots, without a loss of the desirable optical properties. We report experimental results on the properties and surface modification of ZnSe nanoparticles grown by a continuous vapor-phase technique utilizing an axisymmetric counterflow jet reactor. Luminescent ZnSe nanocrystals were obtained at room temperature by reacting vapors of dimethylzinc:triethylamine adduct with hydrogen selenide, diluted in a hydrogen carrier gas. The two reactants were supplied from opposite inlets of the counterflow jet configuration and initiated particle nucleation in a region near the stagnation point of the laminar flow field. Surface modification of nanoparticles by adsorption of 1-pentanethiol was used to control the rate of particle coalescence. The counterflow jet technique can be scaled up for commercial production and is compatible with other vapor-phase processing techniques used in the microelectronics industry.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 789 , 2003 , N15.54
Copyright
Copyright © Materials Research Society 2004

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.)

References

REFERENCES

1. Alivisatos, A. P., Science, 271, 933 (1996).Google Scholar
2. Murray, C. B., Kagan, C. R., and Bawendi, M. G., Annu. Rev. Mater. Sci., 30, 545 (2000).Google Scholar
3. Eychmuller, A., J. Phys. Chem. B, 104, 6514 (2000).Google Scholar
4. Trindade, T., O'Brien, P., and Pickett, N. L., Chem. Mater., 13 (11), 3843 (2001).Google Scholar
5. Swihart, M. T., Curr. Opin. Colloid In., 8, 127 (2003).Google Scholar
6. Hines, M. A. and Guyot-Sionnest, P., J. Phys. Chem. B, 102 (19), 3655 (1998).Google Scholar
7. Chestnoy, N., Hull, R., Brus, L. E., J. Phys. Chem., 85 (4), 2237 (1986).Google Scholar
8. Li, G. and Nogami, M., J. Appl. Phys., 75 (8), 4276 (1994).Google Scholar
9. Sarigiannis, D., Peck, J. D., Kioseoglou, G., Petrou, A., and Mountziaris, T. J., App. Phys. Lett., 80 (21), 4024 (2002).Google Scholar
10. Zachariah, M. R. and Carrier, M. J., J. Aerosol Sci., 30 (9), 1139 (1999).Google Scholar
11. Peck, J. D., Mountziaris, T. J., Stoltz, S., Petrou, A., and Mattocks, P., J. Cryst. Growth, 170 (1–4), 523 (1997).Google Scholar
12. Lehtinen, K. E. J. and Zachariah, M. R., J. Aerosol Sci., 33, 357 (2002).Google Scholar
13. Warnock, J. and Awschalom, D. D., Phys. Rev. B, 32, 5529 (1985).Google Scholar