摘要
本文以ＢａＦＣｌｘＢｒ－１－ｘ：Ｓｍ２＋Ｄ２→７Ｆ０的跃迁几率随ｘ变化为中心对ＢａＦＣｌｘＢｒ－１－ｘ：Ｓｍ２＋体系４ｆ５ｄ带的激发光谱、５Ｄ２→７Ｆ０跃迁的荧光衰减随温度的变化特性、５Ｄ２→７Ｆ０的跃迁几率等进行了研究．从而得出结论：在ＢａＦＣｌｘＢｒ１－ｘ：Ｓｍ２＋中，随Ｂｒ含量的增大，４ｆ５ｄ带与５Ｄ２能级更加接近，使７Ｆ０→Ｄ２的吸收截面增大，从而可能提高在５Ｄ２：能级烧孔的效率．
Concerning electron transition probability of7F0→5D2 of Sin2+ in BaFClxBr1-x:Sm2+ system, the excitation spectra of 4f5d bands, the decay dependence of 5D2→7F0transition on the composition (x) and temperature, absorption probability of7F0→5D2and emission transition probability of 5D2→7F0 are investigated. The results show that the 4f5d bands of Sm2+ become lower and closer to 5D2 states with the increase of Br concentration in BaFClxBr1-x: Sm2+ system. Therefore, it could be expected that the holeburning efficiency of these materials should increase with the increase of Br concentration.
出处
《发光学报》
EI
CAS
CSCD
北大核心
1994年第3期215-220,共6页
Chinese Journal of Luminescence
基金
中国科学院长在物理研究所激发态物理开放研究实验室资助
关键词
吸收截面
跃迁几率
光谱烧孔
hole-burning efficiency, electron transition probability, absorption cross section
