Journal
SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES
Volume 49, Issue 4, Pages 408-413Publisher
SCIENCE PRESS
DOI: 10.1007/s11431-006-2001-6
Keywords
vacuum ultraviolet (VUV); phosphors; GdPO4 : RE3+; energy transfer
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Polycrystal of GdPO4:RE3+(RE=Tb, Tm) phosphors were prepared by solid-state method. Vacuum ultraviolet excitation and emission spectrum and the energy transfer mechanism between the host and dopants of Tb3+ and Tm3+ were investigated respectively. The emission of Gd3+ at 313 nm was enhanced by the strong absorption of CTS of Tm3+ at 180 nm in GdPO4: Tm. It has also been concluded that the excitation of Gd3+ is transferred to Tb3+ and then emission peaks of D-5(J)-> F-7(J) of Tb3+ were observed.
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