Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-17T18:21:08.105Z Has data issue: false hasContentIssue false
  • English
  • Français

Quantum Confinement Effects on 100–400 Å Diameter Silver Bromide Microcrystals

Published online by Cambridge University Press:  28 February 2011

Michal Ilana Freedhoff ,
George McLendon  and
Alfred Marchetti
Michal Ilana Freedhoff
Affiliation:
University of Rochester, Rochester, NY, 14627
George McLendon
Affiliation:
University of Rochester, Rochester, NY, 14627
Alfred Marchetti
Affiliation:
Eastman-Kodak Company, Rochester, NY, 14652-4708
Get access

Abstract

Previous work on quantum confined AgBr microcrystals has been limited to either large (500-1000 Å diameter) aqueous samples or extremely small (60-100 Å diameter) inhomogeneously sized micellar samples. This has prevented an investigation of the effect of size restriction on the phonon assisted transitions of the indirect exciton. A non-aqueous preparation was developed, capable of providing more homogeneous size distributions of AgBr microcrystals in the 100-400 Å diameter range. Low temperature luminescence studies were performed to determine the changes in energy and intensity associated with these excitonic transitions. The radiative lifetimes of some of the excitonic processes were measured in order to obtain a more global perspective on the photophysics of AgBr.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 358: Symposium F – Microcrystalline and Nanocrystalline Semiconductors , 1994 , 301
Copyright
Copyright © Materials Research Society 1995

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 Johannson, K. P., McLendon, G. L., and Marchetti, A. P., Chem. Phys. Lett., 179, 321, (1991).Google Scholar
2 Johannson, K.P., Marchetti, A.P. and McLendon, G. L., J. Phys. Chem., 96, 2873, (1992).Google Scholar
3 Chen, W., McLendon, G., Marchetti, A., Rehm, J. M., Freedhoff, M. I., and Meyers, C., J. Am. Chem. Soc., 116, 1585, (1994).Google Scholar
4 Rossetti, R., Beek, S. M. and Brus, L. E., J. Am. Chem. Soc., 104, 7322, (1982).Google Scholar
5 Von der Osten, W., Physica, 146B, 240, (1987).Google Scholar
6 Sliwczuk, U. and Von der Osten, W., J. Imaging Sci., 32, 106, (1988).Google Scholar
7 Von der Osten, W., and Stolz, H., J. Phys. Chem. Solids, 51, 765, (1990)Google Scholar
8 Marchetti, A.P. and Burberry, M. S., Phys. Rev. B, 28,2130, (1983).Google Scholar
9 Marchetti, A. P., Johannson, K. P. and G. L. McLendon Phys. Rev. B, 47, 4268, (1993).Google Scholar
10 Knox, R. S., Theory of Excitons, (Academic Press Inc., New York, 1963), p. 38.Google Scholar
11 Moser, F. and Lyu, S., J. Lumin., 3,447, (1971).Google Scholar
12 Marchetti, A. P., Burberry, M. S., and Spoonhower, J. P., Phys. Rev. B, 43, 2378, (1991).Google Scholar