Abstract

Er3+-ion-doped anatase TiO2 nanocrystals were prepared by simple wet chemical synthesis. Very sharp and intense near-infrared luminescence at approximately 1.53μm was observed that originated from the lattice site of Er3+ ions incorporated in TiO2 nanocrystals. Based on the high-resolution emission and excitation spectra at 10K, an efficient energy transfer from the TiO2 host to Er3+ ions was verified. The luminescence decay for the I1324I1524 transition at 1.53μm showed nonexponential characteristics, indicating a nonradiative relaxation to the defects in the nanocrystals, and the intrinsic lifetime of the I1324 state was determined to be 1.56ms.

© 2008 Optical Society of America

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J. Lin, M. Yu, C. K. Lin, and X. M. Liu, J. Phys. Chem. C 111, 5835 (2007).
[CrossRef]

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J. G. Li, X. H. Wang, K. Watanabe, and T. Ishigaki, J. Phys. Chem. B 110, 1121 (2006).
[CrossRef] [PubMed]

2005

W. Li, A. I. Frenkel, J. C. Woicik, C. Ni, and S. I. Shah, Phys. Rev. B 72, 155315 (2005).
[CrossRef]

W. Y. Shen, M. L. Pang, J. Lin, and J. Fang, J. Electrochem. Soc. 152, H25 (2005).
[CrossRef]

2004

A. C. Yanes, J. Del Castillo, M. Torres, J. Peraza, V. D. Rodriguez, and J. Mendez-Ramos, Appl. Phys. Lett. 85, 2343 (2004).
[CrossRef]

S. Saini, K. Chen, X. M. Duan, J. Michel, L. C. Kimerling, and M. Lipson, J. Electron. Mater. 33, 809 (2004).
[CrossRef]

2003

S. Jeon and P. V. Braun, Chem. Mater. 15, 1256 (2003).
[CrossRef]

C. C. Ting, S. Y. Chen, and H. Y. Lee, J. Appl. Phys. 94, 2102 (2003).
[CrossRef]

2002

S. Komuro, T. Katsumata, H. Kokai, and T. Morikawa, Appl. Phys. Lett. 81, 4733 (2002).
[CrossRef]

2000

P. S. Golding, S. D. Jackson, T. A. King, and M. Pollnau, Phys. Rev. B 62, 856 (2000).
[CrossRef]

1965

M. Inokuti and F. Hirayama, J. Chem. Phys. 43, 1978 (1965).
[CrossRef]

Braun, P. V.

S. Jeon and P. V. Braun, Chem. Mater. 15, 1256 (2003).
[CrossRef]

Chen, K.

S. Saini, K. Chen, X. M. Duan, J. Michel, L. C. Kimerling, and M. Lipson, J. Electron. Mater. 33, 809 (2004).
[CrossRef]

Chen, S. Y.

C. C. Ting, S. Y. Chen, and H. Y. Lee, J. Appl. Phys. 94, 2102 (2003).
[CrossRef]

Del Castillo, J.

A. C. Yanes, J. Del Castillo, M. Torres, J. Peraza, V. D. Rodriguez, and J. Mendez-Ramos, Appl. Phys. Lett. 85, 2343 (2004).
[CrossRef]

Duan, X. M.

S. Saini, K. Chen, X. M. Duan, J. Michel, L. C. Kimerling, and M. Lipson, J. Electron. Mater. 33, 809 (2004).
[CrossRef]

Fang, J.

W. Y. Shen, M. L. Pang, J. Lin, and J. Fang, J. Electrochem. Soc. 152, H25 (2005).
[CrossRef]

Frenkel, A. I.

W. Li, A. I. Frenkel, J. C. Woicik, C. Ni, and S. I. Shah, Phys. Rev. B 72, 155315 (2005).
[CrossRef]

Golding, P. S.

P. S. Golding, S. D. Jackson, T. A. King, and M. Pollnau, Phys. Rev. B 62, 856 (2000).
[CrossRef]

Hirayama, F.

M. Inokuti and F. Hirayama, J. Chem. Phys. 43, 1978 (1965).
[CrossRef]

Inokuti, M.

M. Inokuti and F. Hirayama, J. Chem. Phys. 43, 1978 (1965).
[CrossRef]

Ishigaki, T.

J. G. Li, X. H. Wang, K. Watanabe, and T. Ishigaki, J. Phys. Chem. B 110, 1121 (2006).
[CrossRef] [PubMed]

Jackson, S. D.

P. S. Golding, S. D. Jackson, T. A. King, and M. Pollnau, Phys. Rev. B 62, 856 (2000).
[CrossRef]

Jeon, S.

S. Jeon and P. V. Braun, Chem. Mater. 15, 1256 (2003).
[CrossRef]

Katsumata, T.

S. Komuro, T. Katsumata, H. Kokai, and T. Morikawa, Appl. Phys. Lett. 81, 4733 (2002).
[CrossRef]

Kimerling, L. C.

S. Saini, K. Chen, X. M. Duan, J. Michel, L. C. Kimerling, and M. Lipson, J. Electron. Mater. 33, 809 (2004).
[CrossRef]

King, T. A.

P. S. Golding, S. D. Jackson, T. A. King, and M. Pollnau, Phys. Rev. B 62, 856 (2000).
[CrossRef]

Kokai, H.

S. Komuro, T. Katsumata, H. Kokai, and T. Morikawa, Appl. Phys. Lett. 81, 4733 (2002).
[CrossRef]

Komuro, S.

S. Komuro, T. Katsumata, H. Kokai, and T. Morikawa, Appl. Phys. Lett. 81, 4733 (2002).
[CrossRef]

Lee, H. Y.

C. C. Ting, S. Y. Chen, and H. Y. Lee, J. Appl. Phys. 94, 2102 (2003).
[CrossRef]

Li, J. G.

J. G. Li, X. H. Wang, K. Watanabe, and T. Ishigaki, J. Phys. Chem. B 110, 1121 (2006).
[CrossRef] [PubMed]

Li, W.

W. Li, A. I. Frenkel, J. C. Woicik, C. Ni, and S. I. Shah, Phys. Rev. B 72, 155315 (2005).
[CrossRef]

Lin, C. K.

J. Lin, M. Yu, C. K. Lin, and X. M. Liu, J. Phys. Chem. C 111, 5835 (2007).
[CrossRef]

Lin, J.

J. Lin, M. Yu, C. K. Lin, and X. M. Liu, J. Phys. Chem. C 111, 5835 (2007).
[CrossRef]

W. Y. Shen, M. L. Pang, J. Lin, and J. Fang, J. Electrochem. Soc. 152, H25 (2005).
[CrossRef]

Lipson, M.

S. Saini, K. Chen, X. M. Duan, J. Michel, L. C. Kimerling, and M. Lipson, J. Electron. Mater. 33, 809 (2004).
[CrossRef]

Liu, X. M.

J. Lin, M. Yu, C. K. Lin, and X. M. Liu, J. Phys. Chem. C 111, 5835 (2007).
[CrossRef]

Mendez-Ramos, J.

A. C. Yanes, J. Del Castillo, M. Torres, J. Peraza, V. D. Rodriguez, and J. Mendez-Ramos, Appl. Phys. Lett. 85, 2343 (2004).
[CrossRef]

Michel, J.

S. Saini, K. Chen, X. M. Duan, J. Michel, L. C. Kimerling, and M. Lipson, J. Electron. Mater. 33, 809 (2004).
[CrossRef]

Morikawa, T.

S. Komuro, T. Katsumata, H. Kokai, and T. Morikawa, Appl. Phys. Lett. 81, 4733 (2002).
[CrossRef]

Ni, C.

W. Li, A. I. Frenkel, J. C. Woicik, C. Ni, and S. I. Shah, Phys. Rev. B 72, 155315 (2005).
[CrossRef]

Pang, M. L.

W. Y. Shen, M. L. Pang, J. Lin, and J. Fang, J. Electrochem. Soc. 152, H25 (2005).
[CrossRef]

Peraza, J.

A. C. Yanes, J. Del Castillo, M. Torres, J. Peraza, V. D. Rodriguez, and J. Mendez-Ramos, Appl. Phys. Lett. 85, 2343 (2004).
[CrossRef]

Pollnau, M.

P. S. Golding, S. D. Jackson, T. A. King, and M. Pollnau, Phys. Rev. B 62, 856 (2000).
[CrossRef]

Rodriguez, V. D.

A. C. Yanes, J. Del Castillo, M. Torres, J. Peraza, V. D. Rodriguez, and J. Mendez-Ramos, Appl. Phys. Lett. 85, 2343 (2004).
[CrossRef]

Saini, S.

S. Saini, K. Chen, X. M. Duan, J. Michel, L. C. Kimerling, and M. Lipson, J. Electron. Mater. 33, 809 (2004).
[CrossRef]

Shah, S. I.

W. Li, A. I. Frenkel, J. C. Woicik, C. Ni, and S. I. Shah, Phys. Rev. B 72, 155315 (2005).
[CrossRef]

Shen, W. Y.

W. Y. Shen, M. L. Pang, J. Lin, and J. Fang, J. Electrochem. Soc. 152, H25 (2005).
[CrossRef]

Ting, C. C.

C. C. Ting, S. Y. Chen, and H. Y. Lee, J. Appl. Phys. 94, 2102 (2003).
[CrossRef]

Torres, M.

A. C. Yanes, J. Del Castillo, M. Torres, J. Peraza, V. D. Rodriguez, and J. Mendez-Ramos, Appl. Phys. Lett. 85, 2343 (2004).
[CrossRef]

Wang, X. H.

J. G. Li, X. H. Wang, K. Watanabe, and T. Ishigaki, J. Phys. Chem. B 110, 1121 (2006).
[CrossRef] [PubMed]

Watanabe, K.

J. G. Li, X. H. Wang, K. Watanabe, and T. Ishigaki, J. Phys. Chem. B 110, 1121 (2006).
[CrossRef] [PubMed]

Woicik, J. C.

W. Li, A. I. Frenkel, J. C. Woicik, C. Ni, and S. I. Shah, Phys. Rev. B 72, 155315 (2005).
[CrossRef]

Yanes, A. C.

A. C. Yanes, J. Del Castillo, M. Torres, J. Peraza, V. D. Rodriguez, and J. Mendez-Ramos, Appl. Phys. Lett. 85, 2343 (2004).
[CrossRef]

Yu, M.

J. Lin, M. Yu, C. K. Lin, and X. M. Liu, J. Phys. Chem. C 111, 5835 (2007).
[CrossRef]

Appl. Phys. Lett.

A. C. Yanes, J. Del Castillo, M. Torres, J. Peraza, V. D. Rodriguez, and J. Mendez-Ramos, Appl. Phys. Lett. 85, 2343 (2004).
[CrossRef]

S. Komuro, T. Katsumata, H. Kokai, and T. Morikawa, Appl. Phys. Lett. 81, 4733 (2002).
[CrossRef]

Chem. Mater.

S. Jeon and P. V. Braun, Chem. Mater. 15, 1256 (2003).
[CrossRef]

J. Appl. Phys.

C. C. Ting, S. Y. Chen, and H. Y. Lee, J. Appl. Phys. 94, 2102 (2003).
[CrossRef]

J. Chem. Phys.

M. Inokuti and F. Hirayama, J. Chem. Phys. 43, 1978 (1965).
[CrossRef]

J. Electrochem. Soc.

W. Y. Shen, M. L. Pang, J. Lin, and J. Fang, J. Electrochem. Soc. 152, H25 (2005).
[CrossRef]

J. Electron. Mater.

S. Saini, K. Chen, X. M. Duan, J. Michel, L. C. Kimerling, and M. Lipson, J. Electron. Mater. 33, 809 (2004).
[CrossRef]

J. Phys. Chem. B

J. G. Li, X. H. Wang, K. Watanabe, and T. Ishigaki, J. Phys. Chem. B 110, 1121 (2006).
[CrossRef] [PubMed]

J. Phys. Chem. C

J. Lin, M. Yu, C. K. Lin, and X. M. Liu, J. Phys. Chem. C 111, 5835 (2007).
[CrossRef]

Phys. Rev. B

P. S. Golding, S. D. Jackson, T. A. King, and M. Pollnau, Phys. Rev. B 62, 856 (2000).
[CrossRef]

W. Li, A. I. Frenkel, J. C. Woicik, C. Ni, and S. I. Shah, Phys. Rev. B 72, 155315 (2005).
[CrossRef]

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Figures (3)

Fig. 1
Fig. 1

(a) TEM image and (b) XRD pattern of the Er 3 + : TiO 2 nanocrystals.

Fig. 2
Fig. 2

Excitation spectrum of Er 3 + : TiO 2 nanocrystals at 10 K , and the inset enlarges the excitation lines for the transition of I 15 2 4 S 3 2 4 .

Fig. 3
Fig. 3

(a), (b) NIR, (c) visible, and (d) upconverted luminescence spectra of Er 3 + : TiO 2 nanocrystals, where (a)–(c) were measured under the 523.4, 358, and 358 nm excitation at 10 K , respectively, and (d) was measured under the 976 nm laser excitation at RT. The inset shows the luminescence decay curve of (a), with the experimental (dotted curve) and fitted (solid curve) results.

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