Luminescence efficiency of erbium-doped BaTiO3 thin films

被引：0
作者：
Teren, AR [1 ]
Wessels, BW [1 ]
机构：
[1] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA
来源：
THIN FILMS FOR OPTICAL WAVEGUIDE DEVICES AND MATERIALS FOR OPTICAL LIMITING | 2000年 / 597卷
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中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The factors limiting the efficiency of Er3+ luminescence at 1.54 mum (0.8 eV) in erbium-doped barium titanate films were studied. To investigate the effect of film stoichiometry on luminescence efficiency films were annealed in oxygen and in vacuum. For films annealed in oxygen at temperatures of 700-900 degreesC a nominal increase in the luminescence efficiency was observed. Vacuum annealing resulted in strong quenching of the emission intensity. Transient photoluminesence measurements showed that the emission lifetime also decreased for the reduced films. This effect was reversible; upon oxygen annealing both the emission intensity and lifetime were restored to their original values. These results indicate that the Er3+ luminescence efficiency strongly depends on film stoichiometry.
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页码：15 / 20
页数：6
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