ZHI-HUA LENG, ZHE TAN, SHU-HONG LIU. Tunable Photoluminescence Properties and Energy Transfer of Ba3YB9O18:Tb3+, Eu3+ Phosphors. [J]. Chinese journal of luminescence, 2021, 42(1): 83-90.
DOI:
ZHI-HUA LENG, ZHE TAN, SHU-HONG LIU. Tunable Photoluminescence Properties and Energy Transfer of Ba3YB9O18:Tb3+, Eu3+ Phosphors. [J]. Chinese journal of luminescence, 2021, 42(1): 83-90. DOI: 10.37188/CJL.20200260.
Tunable Photoluminescence Properties and Energy Transfer of Ba3YB9O18:Tb3+, Eu3+ Phosphors
phosphors with tunable photoluminescence were successfully prepared by solid state reaction. X-ray diffraction(XRD) and transmission electron microscopy(TEM) were utilized to investigate the phase purity and crystal structure of the as-obtained phosphors. The XRD refinement results demonstrate that the linear structural evolution of Ba
3
YB
9
O
18
:Tb
3+
Eu
3+
solid-solutions obeys excellent Vegard's rule when Y
3+
were substituted by Eu
3+
ions. Moreover
the energy transfer process from Tb
3+
to Eu
3+
in Ba
3
YB
9
O
18
:Tb
3+
Eu
3+
phosphors was verified by emission spectra and decay curves. The energy transfer mechanism from Tb
3+
to Eu
3+
was proved to be the electric dipole-dipole interaction. Due to the energy transfer process from Tb
3+
to Eu
3+
the color tones can be gradually adjusted from green to red with increasing Eu
3+
doping content. These results manifest that the as-synthesized Ba
3
YB
9
O
18
:Tb
3+
Eu
3+
phosphors may find potential applications for UV excited solid state lighting.
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