YANG Zhi-ping, YANG Fu, HOU Chun-cai etc. Synthesis and Luminescence Properties of Novel Green Emitting Phosphor BaLa<sub>2</sub>ZnO<sub>5</sub>:Tb<sup>3+</sup>[J]. Chinese Journal of Luminescence, 2014,35(10): 1153-1157
YANG Zhi-ping, YANG Fu, HOU Chun-cai etc. Synthesis and Luminescence Properties of Novel Green Emitting Phosphor BaLa<sub>2</sub>ZnO<sub>5</sub>:Tb<sup>3+</sup>[J]. Chinese Journal of Luminescence, 2014,35(10): 1153-1157 DOI: 10.3788/fgxb20143510.1153.
Synthesis and Luminescence Properties of Novel Green Emitting Phosphor BaLa2ZnO5:Tb3+
green phosphors were synthesized by solid state reaction
and the structure and luminescence properties of the phosphors were also investigated. The results show that the ternary oxide Ba
Ln
2
ZnO
5
has a tetragonal structure with a space group of I4/
mcm
and its basic structure consists of LaO
8
BaO
10
and ZnO
4
polyhedra. The excitation spectra of the samples are mainly constituted by broadband peak at 241 nm and 279 nm. Under the excitation of 279 nm
the peak of emission spectra was located at 548 nm
which belongs to the ff transition of Tb
3+
ions. There exists concentration quenching in BaLa
2-
x
ZnO
5
:
x
Tb
3+
phosphors
when the doping concentration
x
is more than 0.3. According to Dexter theory
the concentration quenching mechanism of Tb
3+
in BaLa
2
ZnO
4
:Tb
3+
is the d-d interaction.
关键词
Keywords
references
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Related Institution
School of Physical Science and Technology, Lanzhou University
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