Abstract
A novel technique combining electrospray and organometallic chemical vapor deposition (OMCVD) has been developed for synthesis of VI-II quantum dot composites. CdSe nanocrystallites dispersed in a mixture of pyridine and acetonitrile were electrosprayed into the gas-phase in the growth zone of an OMCVD reactor and then incorporated into a ZnSe matrix grown by OMCVD. Hydrogen selenide and diethylzinc were used to deposit the ZnSe matrix at temperatures of 150–240°C. The ZnSe/CdSe quantum dot composites were characterized by visible absorption spectroscopy, room temperature photoluminescence and Auger electron spectroscopy. The optical properties of the composites are determined by the size of the original CdSe nanocrystallites.
Similar content being viewed by others
References
L. Brus, Appl. Phys. A53, 465 (1991).
Y. Wang, N. Herron, J. Phys. Chem. 95, 525 (1991).
H. Weiler, Angew. Chem. Int. Ed. Engl. 32, 41 (1993)
C. B. Murray, D. J. Norris, M. G. Bawendi, J. Amer. Chem. Soc. 115, 8706 (1993).
J. B. Fenn, M. Mann, C. K. Meng, S. T. Wong, C. M. Whitehouse, Science 246, 64 (1989).
P. J. Wright, B. Cockayne, P. E. Oliver, A. C. Jones, J. Cryst. Growth 108, 525 (1991).
Acknowledgments
The financial support of the National Science Foundation (CHE-89-14953, DMR-90-22933, and DMR-90-23162) is gratefully acknowledged.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Danek, M., Jensen, K.F., Murray, C.B. et al. Preparation of II-VI Quantum Dot Composites by Electrospray Omcvd. MRS Online Proceedings Library 326, 275–280 (1993). https://doi.org/10.1557/PROC-326-275
Published:
Issue Date:
DOI: https://doi.org/10.1557/PROC-326-275