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Luminescence and energy transfer phenomena of several rare earth ions in the CaAl2B2O7
被引:33
|作者:
You, HP
[1
]
Hong, GY
[1
]
机构:
[1] CHINESE ACAD SCI,CHANGCHUN INST APPL CHEM,CHANGCHUN 130022,PEOPLES R CHINA
关键词:
optical materials;
oxides;
luminescence;
optical properties;
CE-3+;
TB-3+;
D O I:
10.1016/S0025-5408(97)00042-1
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
The luminescence properties of Ce3+, Gd3+, and Tb3+ have been investigated in the compound CaAl2B2O7. The single excitation band peaking at about 320 nm and single emission band peaking at about 384 nm for Ce3+, without the characteristic doublet, are attributed to the extensive crystal-field splitting of 4f ground state. The emission of Gd3+ consists of well-known sharp lines and two weak bands around 319.5 and 325 nm. These bands are due to the coupling of Gd3+ with BO33- groups. The green emission of Tb3+ is considerably sensitized by Ce3+. Energy transfer from Ce3+ to Tb3+ in CaAl2B2O7 is efficient. (C) 1997 Elsevier Science Ltd.
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页码:785 / 790
页数:6
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