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Luminescence in ZnO Quantum Particles

Published online by Cambridge University Press:  03 March 2011

B.S. Bendre  and
Shailaja Mahamuni
B.S. Bendre
Affiliation:
Center for Advanced Studies in Solid State Physics and Material Science, Department of Physics, University of Pune, Pune 411 007, India
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Abstract

Wet-chemical and electrochemical routes were used to synthesize zinc oxide nanoparticles showing peculiar luminescent properties. ZnO-I are the nanoparticles that show only band gap ultraviolet (UV) emission, whereas ZnO-II type nanoparticles show the defect green luminescence along with the UV emission. Photoluminescence excitation (PLE) spectra of ZnO-I nanocrystals exhibit a single feature located at about 368 nm whereas ZnO-II nanocrystals show two features in PLE: a prominent feature at about 368 nm which is size dependent and a hump at 325 nm. These results are discussed in detail in view of the luminescence behavior in ZnO quantum particles.

Keywords

NanoparticleOptical propertiesLuminescence

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Type
Articles
Information
Journal of Materials Research , Volume 19 , Issue 3 , March 2004 , pp. 737 - 740
Copyright
Copyright © Materials Research Society 2004

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References

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