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Optics Letters

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  • Vol. 32, Iss. 5 — Mar. 1, 2007
  • pp: 566–568

Spectroscopic evidence of the multiple- site structure of Eu 3 + ions incorporated in ZnO nanocrystals

Yongsheng Liu, Wenqin Luo, Renfu Li, and Xueyuan Chen  »View Author Affiliations


Optics Letters, Vol. 32, Issue 5, pp. 566-568 (2007)
http://dx.doi.org/10.1364/OL.32.000566


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Abstract

Hexagonal Eu 3 + : ZnO nanocrystals were synthesized by a modified solgel method. By means of the site-selective spectroscopy at 10 K , two kinds of luminescence sites of Eu 3 + are identified. One site exhibits a long lifetime of D 0 5 and sharp emission and excitation peaks, which are ascribed to the inner lattice site with an ordered crystalline environment. The other site associated with the distorted lattice sites near the surface shows a relatively short lifetime of D 0 5 and significantly broadened fluorescence lines. The energy transfer from the nanocrystal host to Eu 3 + confirms that Eu 3 + ions can, to some extent, be incorporated into the ZnO nanocrystal.

© 2007 Optical Society of America

OCIS Codes
(160.2540) Materials : Fluorescent and luminescent materials
(160.5690) Materials : Rare-earth-doped materials
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence

ToC Category:
Spectroscopy

History
Original Manuscript: October 13, 2006
Revised Manuscript: November 15, 2006
Manuscript Accepted: November 19, 2006
Published: February 2, 2007

Citation
Yongsheng Liu, Wenqin Luo, Renfu Li, and Xueyuan Chen, "Spectroscopic evidence of the multiple-site structure of Eu3+ ions incorporated in ZnO nanocrystals," Opt. Lett. 32, 566-568 (2007)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-32-5-566


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