Red luminescence from hydrothermally synthesized Eu-doped ZnO nanoparticles under visible excitation

Eu-doped ZnO nanoparticles were synthesized by hydrothermal method. The Eu-dopant concentration has been varied by varying the amount of Eu-dopant concentration. These nanoparticles were structurally characterized by X-ray diffraction, transmission electron microscopy and selected area electron diff...

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Bibliographic Details
Published in:Bulletin of materials science 2010-06, Vol.33 (3), p.227-231
Main Authors: Aneesh, P. M., Jayaraj, M. K.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Diffraction
Dopants
Electron diffraction
Engineering
Excitation
Luminescence
Materials Science
Nanoparticles
Photoluminescence
Quenching
Synthesis
Wurtzite
X-rays
Zinc oxide
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Summary:Eu-doped ZnO nanoparticles were synthesized by hydrothermal method. The Eu-dopant concentration has been varied by varying the amount of Eu-dopant concentration. These nanoparticles were structurally characterized by X-ray diffraction, transmission electron microscopy and selected area electron diffraction and it confirms the formation of nanoparticles having standard wurtzite structure. Photoluminescence studies show that these nanoparticles exhibit a sharp red luminescence due to the intra-4 f transitions of Eu 3+ ions at an excitation of 397 nm and 466 nm. Luminescence quenching is observed in the nanoparticles as the Eu-dopant concentration increases. Incorporation of Eu in the nanoparticles was confirmed by the energy dispersive X-ray studies.
ISSN:0250-4707
0973-7669
DOI:10.1007/s12034-010-0035-7