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Photoluminescence behavior of Al3+, Pr3+ doped perovskite La2/3TiO3 and pyrochlore La2Ti2O7

Published online by Cambridge University Press:  31 January 2011

J. K. Park ,
C. H. Kim ,
K. J. Choi ,
H. D. Park  and
S. Y. Choi
J. K. Park
Affiliation:
Advanced Materials Division, Korea Research Institute of Chemical Technology, Taejon 305–600, Korea
C. H. Kim
Affiliation:
Advanced Materials Division, Korea Research Institute of Chemical Technology, Taejon 305–600, Korea
K. J. Choi
Affiliation:
Advanced Materials Division, Korea Research Institute of Chemical Technology, Taejon 305–600, Korea
H. D. Park
Affiliation:
Advanced Materials Division, Korea Research Institute of Chemical Technology, Taejon 305–600, Korea
S. Y. Choi
Affiliation:
Department of Ceramic Engineering, Yonsei University, Seoul 120–749, Korea
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Abstract

The purpose of this study is to develop an understanding of the photoluminescence properties of Al3+, Pr3+ doped perovskite-type La2/3TiO3 and pyrochlore-type La2Ti2O7 phosphor, which is characterized by the red emission (1D2 →3H4 transition) of the Pr3+ ion. The explanation for the energy transfer and the corresponding critical distance is proposed on the basis of the role of Al3+ ions in the perovskite-type La2/3TiO3:Pr phosphor. To clarify the distinction of photoluminescence properties between the perovskite-type La2/3TiO3 and the pyrochlore-type La2Ti2O7, the trap-involved process and the charge transfer band have been investigated, respectively.

Type
Articles
Information
Journal of Materials Research , Volume 16 , Issue 9 , September 2001 , pp. 2568 - 2571
Copyright
Copyright © Materials Research Society 2001

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