Synthesis and spectroscopic characterization of Ba2Sb2O7:Eu3+ orange-red emitting phosphor for WLEDs

被引：8
作者：
George, Anns [1 ,2 ]
Jose, Adon [1 ]
Krishnapriya, T. [1 ]
Biju, P. R. [1 ]
机构：
[1] Mahatma Gandhi Univ, Sch Pure & Appl Phys, Kottayam 686560, Kerala, India
[2] Assumpt Coll Autonomous, Kottayam 686101, Kerala, India
来源：
MATERIALS LETTERS | 2021年 / 300卷
关键词：
Phosphor; Luminescence; Ba2Sb2O7; Orange-red emission; EMISSION;
D O I：
10.1016/j.matlet.2021.130266
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A series of Eu3+ doped Ba2Sb2O7 phosphors were prepared by the solid-state reaction method. XRD analysis confirmed its orthorhombic structure with the space group Imma. The photoluminescence spectra implies that the phosphors exhibit characteristic emission peaks corresponding to (D0 -> FJ)-D-5-F-7 transitions of Eu3+ ions under NUV excitation. The CIE chromaticity coordinates reveal reddish-orange emission in the warm CCT region with high color purity. The mechanism for concentration quenching was found to be quadrupole-quadrupole interaction and the decay lifetime of the phosphors is in the millisecond range. The results suggest that the prepared phosphors are a potential candidate for phosphor-converted white light-emitting diodes and optoelectronic devices.
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页数：4
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