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Effects of Gamma Irradiation on Optical Properties of Colloidal Nanocrystals

Published online by Cambridge University Press:  01 February 2011

Nathan J Withers ,
Krishnaprasad Sankar ,
Brian A. Akins ,
Tosifa A. Memon ,
Jiangjiang Gu ,
Tingyi Gu ,
Shin T. Bowers ,
Melisa R. Greenberg ,
Gennady A. Smolyakov  and
Robert D. Busch
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Nathan J Withers
Affiliation:
nwithers@chtm.unm.edu, University of New Mexico, Center for High Technology Materials, 1313 Goddard SE, Albuquerque, NM, 87106-4343, United States
Krishnaprasad Sankar
Affiliation:
krishna@unm.edu, University of New Mexico, Center for High Technology Materials, 1313 Goddard SE, Albuquerque, NM, 87106-4343, United States
Brian A. Akins
Affiliation:
bakins@chtm.unm.edu, University of New Mexico, Center for High Technology Materials, 1313 Goddard SE, Albuquerque, NM, 87106-4343, United States
Tosifa A. Memon
Affiliation:
tmemon@unm.edu, University of New Mexico, Center for High Technology Materials, 1313 Goddard SE, Albuquerque, NM, 87106-4343, United States
Jiangjiang Gu
Affiliation:
jjgu@unm.edu, University of New Mexico, Center for High Technology Materials, 1313 Goddard SE, Albuquerque, NM, 87106-4343, United States
Tingyi Gu
Affiliation:
tgu@unm.edu, University of New Mexico, Center for High Technology Materials, 1313 Goddard SE, Albuquerque, NM, 87106-4343, United States
Shin T. Bowers
Affiliation:
shin_bowers@brown.edu, University of New Mexico, Center for High Technology Materials, 1313 Goddard SE, Albuquerque, NM, 87106-4343, United States
Melisa R. Greenberg
Affiliation:
mgreenb@chtm.unm.edu, University of New Mexico, Center for High Technology Materials, 1313 Goddard SE, Albuquerque, NM, 87106-4343, United States
Gennady A. Smolyakov
Affiliation:
gen@chtm.unm.edu, University of New Mexico, Center for High Technology Materials, 1313 Goddard SE, Albuquerque, NM, 87106-4343, United States
Robert D. Busch
Affiliation:
busch@unm.edu, University of New Mexico, Department of Chemical and Nuclear Engineering, Albuquerque, NM, 87131, United States
Marek Osinski
Affiliation:
osinski@chtm.unm.edu, University of New Mexico, Center for High Technology Materials, 1313 Goddard SE, Albuquerque, NM, 87106-4343, United States
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Abstract

The effects of 137Cs gamma irradiation on photoluminescence properties, such as spectra, light output, and lifetime, of several types of colloidal nanocrystals have been investigated. Irradiation-induced damage testing was performed on CdSe/ZnS, LaF3:Eu, LaF3:Ce, ZnO, and PbI2 nanocrystals synthesized on a Schlenk line using appropriate solvents and precursors. Optical degradation of the nanocrystals was evaluated based on the measured dependence of their photoluminescence intensity on the irradiation dose. Radiation hardness varies significantly between various nanocrystalline material systems.

Keywords

nanostructureradiation effectsoptical properties
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1038: Symposium O – Nuclear Radiation Detection Materials , 2007 , 1038-O09-05
Copyright
Copyright © Materials Research Society 2008

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