Synthesis and photoluminescence of Eu-doped ZnO microrods prepared by hydrothermal method

Eu-doped ZnO microrods, with wurtzite structure and [0 0 0 1] growth direction have been successfully synthesized on Si (1 0 0) substrates by a simple hydrothermal method. The samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), lifetime decay curves, photolumin...

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Bibliographic Details
Published in:Optical materials 2009-08, Vol.31 (10), p.1502-1505
Main Authors: Wang, Meili, Huang, Changgang, Huang, Zhi, Guo, Wang, Huang, Jiquan, He, Hong, Wang, Hai, Cao, Yongge, Liu, Quanlin, Liang, Jingkui
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Eu-doped
Exact sciences and technology
Ii-vi semiconductors
Microrods
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Photoluminescence
Physics
Zinc oxide
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Summary:Eu-doped ZnO microrods, with wurtzite structure and [0 0 0 1] growth direction have been successfully synthesized on Si (1 0 0) substrates by a simple hydrothermal method. The samples were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), lifetime decay curves, photoluminescence (PL) and photoluminescence excitation (PLE) spectra, respectively. These results indicate that Eu 3+ ions are located in the distorted lattice sites near the surface of the ZnO microrods. Additionally, it is also suggested that the surface defects may act as a step in the process of energy transfer from ZnO to Eu 3+ ions.
ISSN:0925-3467
1873-1252
DOI:10.1016/j.optmat.2009.02.009