期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 119, 期 3, 页码 490-494出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2009.10.002
关键词
Y2O3:Tb3+; YBO3:Tb3+; Photoluminescence; Concentration quenching
资金
- National Science Foundation of China [60906031]
- Scientific Research Fund of Zhejiang Provincial Education Department [20070361]
- Science and Technology Department of Zhejiang Province [200801031]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars (State Education Ministry) [111383A4C08690]
In this work, two Tb3+ activated green phosphors: Y2O3:Tb3+ and YBO3:Tb3+ were prepared by hydrothermal method. Photoluminescence properties of both phosphors were studied in details. Both phosphors exhibit similar luminescent characteristics symbolized by the dominant green emission at 545 nm. Concentration quenching occurs at the Tb3+ concentration of 1.60 atomic% and 2.57 atomic% for Y2O3:Tb3+ and YBO3:Tb3+, respectively. Luminescence decay properties were characterized to better understand the mechanism of concentration quenching. Based on the calculation, the concentration quenching in both phosphors was caused by the dipole-dipole interaction between Tb3+ ions. (C) 2009 Elsevier B.V. All rights reserved.
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