YOU Bao-gui, YIN Min, CHEN Yong-hu, DUAN Chang-kui. Synchrotron Radiation Study of The Luminescence and Energy Transfer of Tb<sup>3+</sup>-doped K<sub>2</sub>GdF<sub>5</sub>[J]. Chinese Journal of Luminescence, 2011,32(12): 1216-1220
YOU Bao-gui, YIN Min, CHEN Yong-hu, DUAN Chang-kui. Synchrotron Radiation Study of The Luminescence and Energy Transfer of Tb<sup>3+</sup>-doped K<sub>2</sub>GdF<sub>5</sub>[J]. Chinese Journal of Luminescence, 2011,32(12): 1216-1220DOI:
Synchrotron Radiation Study of The Luminescence and Energy Transfer of Tb3+-doped K2GdF5
mole fraction) single crystal under various excitations were measured and compared. The room temperature excitation spectra of
5
D
3
7
F
6
and
5
D
4
7
F
5
transitions exhibited three broad bands and three groups of narrow peaks. The narrow peaks were assigned as
8
S
7/2
6
F
J
6
G
J
8
S
7/2
6
D
J
and
8
S
7/2
6
I
J
transition of Gd
3+
and the broad bands were assigned as the absorption from the ground state
7
F
6
to the low-spin states of 4f
7
(
8
S)5d configurations of Tb
3+
. The mechanism of energy transfer from Gd
3+
to Tb
3+
and the cross relaxation between Tb
3+
ions were also analyzed.
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references
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