Journal
JOURNAL OF LUMINESCENCE
Volume 132, Issue 6, Pages 1540-1543Publisher
ELSEVIER
DOI: 10.1016/j.jlumin.2012.01.002
Keywords
Phosphors; Oxynitride; Plasma display panels; Tb; CaSi2O2N2
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Funding
- National Science Foundation of China [50702056, 51072191]
- Chinese Academy of Sciences
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Oxynitride phosphor powders comprising of CaSi2O2N2 doped with Tb3+ were successfully synthesized using a high-temperature solid-state reaction method. The experimentally determined photoluminescence (PL) properties of the produced phosphors meet the requirements of 2D/3D plasma display panels (PDPs). In particular, under the excitation of vacuum ultraviolet (VUV) synchrotron radiation and ultraviolet (UV) irradiation, emission peaks corresponding to the D-5(3) -> F-7(J)) (J=6, 5, 4, 3) and D-5(4) -> F-7(J) (J=6, 5, 4, 3) transitions of Tb3+ ions were recorded. Monitoring the D-5(4) -> F-7(5) emission of Tb3+ at 545 nm, the excitation bands were assigned to the host-related absorption as well as the 4f-5d (fd) and the 4f-4f (ff) transitions of Tb3+. The produced phosphors can be efficiently excited at 147 nm, and have an adequately short decay time (tau(1/10) = 1.14 ms). (C) 2012 Elsevier B.V. All rights reserved.
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