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  • Vol. 33, Iss. 9 — May. 1, 2008
  • pp: 953–955

Emission of 1.53 μ m originating from the lattice site of Er 3 + ions incorporated in TiO 2 nanocrystals

Chengyu Fu, Jinsheng Liao, Wenqin Luo, Renfu Li, and Xueyuan Chen  »View Author Affiliations


Optics Letters, Vol. 33, Issue 9, pp. 953-955 (2008)
http://dx.doi.org/10.1364/OL.33.000953


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Abstract

Er 3 + -ion-doped anatase TiO 2 nanocrystals were prepared by simple wet chemical synthesis. Very sharp and intense near-infrared luminescence at approximately 1.53 μ m was observed that originated from the lattice site of Er 3 + ions incorporated in TiO 2 nanocrystals. Based on the high-resolution emission and excitation spectra at 10 K , an efficient energy transfer from the TiO 2 host to Er 3 + ions was verified. The luminescence decay for the I 13 2 4 I 15 2 4 transition at 1.53 μ m showed nonexponential characteristics, indicating a nonradiative relaxation to the defects in the nanocrystals, and the intrinsic lifetime of the I 13 2 4 state was determined to be 1.56 ms .

© 2008 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: February 5, 2008
Revised Manuscript: March 18, 2008
Manuscript Accepted: March 20, 2008
Published: April 25, 2008

Virtual Issues
Vol. 3, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Chengyu Fu, Jinsheng Liao, Wenqin Luo, Renfu Li, and Xueyuan Chen, "Emission of 1.53 μm originating from the lattice site of Er3+ ions incorporated in TiO2 nanocrystals," Opt. Lett. 33, 953-955 (2008)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-33-9-953


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