LUMINESCENCE OF BaGa2Se4 CRYSTALS ACTIVATED BY Eu2+ and Ce3+ IONS

被引：9
|
作者：
Tagiev, B. G. [1 ]
Abushov, S. A. [1 ]
Tagiev, O. B. [1 ,2 ]
机构：
[1] Natl Acad Sci Azerbaijan, Inst Phys, AZ-1143 Baku, Azerbaijan
[2] Moscow MV Lomonosov State Univ, Baku Branch, Baku, Azerbaijan
来源：
JOURNAL OF APPLIED SPECTROSCOPY | 2010年 / 77卷 / 01期
关键词：
luminescence; barium selenogallate; rare earth ions; europium; cerium; INORGANIC-COMPOUNDS; THERMOLUMINESCENCE; TRANSITION; PHOSPHOR; ENERGY;
D O I：
10.1007/s10812-010-9301-0
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
We have studied the effect of doping with Eu2+ and Ce3+ ions on the photoluminescence (PL) of BaGa2Se4 crystals in the temperature range 77-300 K. We have established that the broad bands with maxima at wavelengths 456 nm and 506 nm observed in the photoluminescence spectra of BaGa2Se4:Ce3+ crystals are due to intracenter transitions 5d --> F-2(7/2) and 5d --> F-2(5/2) of the Ce3+ ions, while the broad photoluminescence band with maximum at 521 nm in the spectrum of BaGa2Se4:Eu2+ is associated with 4f(6) 5d --> 4f(7) (S-8(7/2)) transitions of the Eu2+ ion. We show that in BaGa2Se4:Eu2+, Ce3+ crystals, excitation energy is transferred from the Ce3+ ions to the Eu2+ ions.
引用
收藏
页码：115 / 119
页数：5
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