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Investigation of Local Structures Around Luminescent Centers in Doped Nanocrystal Phosphors

Published online by Cambridge University Press:  15 February 2011

Y. L. Soo ,
S. W. Huang ,
Z. H. Ming ,
Y. H. Kao ,
E. Goldburt ,
R. Hodel ,
B. Kulkarni  and
R. Bhargava
Y. L. Soo
Affiliation:
Department of Physics, State University of New York at Buffalo, Buffalo, New York 14261
S. W. Huang
Affiliation:
Department of Physics, State University of New York at Buffalo, Buffalo, New York 14261
Z. H. Ming
Affiliation:
Department of Physics, State University of New York at Buffalo, Buffalo, New York 14261
Y. H. Kao
Affiliation:
Department of Physics, State University of New York at Buffalo, Buffalo, New York 14261
E. Goldburt
Affiliation:
Nanocrystals Technology, P.O. Box 820, Briarcliff Manor, New York 10510.
R. Hodel
Affiliation:
Nanocrystals Technology, P.O. Box 820, Briarcliff Manor, New York 10510.
B. Kulkarni
Affiliation:
Nanocrystals Technology, P.O. Box 820, Briarcliff Manor, New York 10510.
R. Bhargava
Affiliation:
Nanocrystals Technology, P.O. Box 820, Briarcliff Manor, New York 10510.
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Abstract

Extended x-ray absorption fine structure (EXAFS) technique has been employed to investigate the local structures around luminescent centers in nanocrystals of Mn-doped ZnS and Tb-doped Y2O3. Size-dependent local structural changes around Mn luminescent centers have been found in Mn-doped nanocrystals of ZnS by using Mn K-edge EXAFS. Local structures around Tb investigated by Tb Li-edge EXAFS also show substantial differences between bulk and nanocrystal samples. This structural information is useful for understanding the novel optical properties of doped nanocrystals.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 405: Symposium K – Surface/Interface and Stress Effects in Electronic Materials Nanostructures , 1995 , 283
Copyright
Copyright © Materials Research Society 1996

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References

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