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Optical Properties of Cuprous Oxide Nanocrystals

Published online by Cambridge University Press:  15 February 2011

P. J. Rodney ,
M. I. Freedhoff ,
A. P. Marchetti ,
G. L. McLendon  and
P. M. Fauchet
P. J. Rodney
Affiliation:
Institute of Optics and Laboratory for Laser Energetics, University of Rochester, Rochester, NY14627, [email protected] NSF Center for Photoinduced Charge Transfer, Department of Chemistry, University of Rochester, Rochester, NY 14627.
M. I. Freedhoff
Affiliation:
MRS/OSA 1996–97 Congressional Fellow, Office of Rep. Edward Markey, Washington, DC
A. P. Marchetti
Affiliation:
Imaging Research and Advanced Development, Eastman Kodak Company, Rochester, NY14652–4708. NSF Center for Photoinduced Charge Transfer, Department of Chemistry, University of Rochester, Rochester, NY 14627.
G. L. McLendon
Affiliation:
Department of Chemistry, Princeton University, Princeton, NJ 08544.
P. M. Fauchet
Affiliation:
Department of Electrical Engineering and Laboratory for Laser Energetics, University of Rochester, Rochester, NY 14627 NSF Center for Photoinduced Charge Transfer, Department of Chemistry, University of Rochester, Rochester, NY 14627.
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Abstract

Optical properties of size restricted Cu2O obtained through aqueous and non aqueous preparations are compared with those of commercially available bulk crystals. One method of synthesis involved using polyvinyl alcohol as a restraining agent in an aqueous preparation to produce nanocrystals having diameters with a mean of 11 nm and a standard deviation of 6 nm. Low-temperature spectroscopie studies indicate size restriction effects are manifest by a decrease in exciton luminescence and a 3.0 to 9.0 meV blue shift in 0,0 transition. No noticeable changes in the dynamics were observed for the nanocrystals, indicating no alteration or relaxation of the selection rules for the direct forbidden transition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 452 , 1996 , 383
Copyright
Copyright © Materials Research Society 1997

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References

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