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Applied Physics Letters / Volume 95 / Issue 23 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 95, 231110 (2009); http://dx.doi.org/10.1063/1.3272672 (3 pages)

Near infrared long-persistent phosphorescence in SrAl2O4:Eu2+,Dy3+,Er3+ phosphors based on persistent energy transfer

Naiyin Yu, Feng Liu, Xufan Li, and Zhengwei Pan

Department of Physics and Astronomy, Faculty of Engineering, University of Georgia, Athens, Georgia 30602, USA

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(Received 6 August 2009; accepted 17 November 2009; published online 10 December 2009)

Eu2+, Dy3+, and Er3+ ions codoped SrAl2O4 phosphors with near infrared (NIR) (at 1530 nm) long-persistent phosphorescence were synthesized by a combustion method. The NIR phosphorescence emission was realized through a persistent energy transfer process from Eu2+ ions to Er3+ ions. Optimal Er3+ concentration for the maximum energy transfer efficiency was determined and NIR phosphorescence persisting for more than 10 min was achieved. A model of charge trapping and energy transfer process among Eu, Dy, and Er ions in SrAl2O4 host was proposed.

© 2009 American Institute of Physics

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KEYWORDS and PACS

Keywords

combustion, doping profiles, dysprosium, erbium, europium, phosphorescence, phosphors, strontium compounds

PACS

  • 78.60.-b

    Other luminescence and radiative recombination

  • 61.72.sd

    Impurity concentration

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3272672

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    C. Li, J. Wang, H. Liang, and Q. Su, J. Appl. Phys. 101, 113304 (2007)JAPIAU000101000011113304000001.

    D. Jia, R. S. Meltzer, W. M. Yen, W. Jia, and X. J. Wang, Appl. Phys. Lett. 80, 1535 (2002)APPLAB000080000009001535000001.

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