LUMINESCENCE OF Eu2+ IONS IN ALKALINE EARTH DILITHIOSILICATES

被引：4
|
作者：
Levshov, S. M. [1 ]
Berezovskaya, I. V. [1 ]
Efryushina, N. P. [1 ]
Vdovenko, S. I. [2 ]
Kovalevskaya, I. P. [1 ]
Dotsenko, V. P. [1 ]
机构：
[1] Natl Acad Sci Ukraine, AV Bogatsky Phys Chem Inst, UA-65080 Odessa, Ukraine
[2] Natl Acad Sci Ukraine, Inst Bioorgan Chem & Petrochem, Kiev, Ukraine
来源：
JOURNAL OF APPLIED SPECTROSCOPY | 2012年 / 79卷 / 01期
关键词：
alkaline earth silicates; europium; luminescence; crystal structure; PHOSPHOR; CE3+;
D O I：
10.1007/s10812-012-9565-7
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Spectral-luminescent properties of Eu2+ ions in alkaline earth dilithiosilicates of composition MLi2SiO4 (M = Ca, Sr, Ba) have been studied at 77 K. The reasons for the different positions of the Eu2+ 4f(6)5d -> 4f(7) emission band maximum in spectra of MLi2SiO4 were found based on the obtained results. It was shown that the increase in the decay time of the Eu2+ emission on going from CaLi2SiO4 (0.41 mu s) through BaLi2SiO4 (0.64 mu s) to Sr-silicate (1.11 mu s) correlates with the shift of the emission maximum to longer wavelengths.
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收藏
页码：70 / 75
页数：6
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