Luminescence of Ce3+ ions in alkaline earth borophosphates
Luminescence of Ce3+ ions in alkaline earth borophosphates
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DOI：
10.1016/j.jallcom.2004.07.082
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发表时间：
2005-04
影响因子：
6.2
通讯作者：
I. Berezovskaya;V. Dotsenko;N. Efryushina;A. Voloshinovskii;C. Eijk;P. Dorenbos;A. V. Sidorenko
中科院分区：
文献类型：
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作者：
I. Berezovskaya;V. Dotsenko;N. Efryushina;A. Voloshinovskii;C. Eijk;P. Dorenbos;A. V. Sidorenko
本文研究了稀土硼磷酸盐MBPO_5（M=Sr，Ba）中Ce ~（3+）离子在3.5- 15 eV激发下的发光性质。在MBPO_5（M=Sr，Ba; x≤0.01）固溶体中观察到两个主要的Ce ~（3+）中心。的主导中心被发现是由直接取代的M2+的掺杂剂离子，而没有本地电荷补偿。另一个中心是由Ce ~（3+）离子和点缺陷形成的。结果表明，由于MO键的高度电离性，Ce 3+在MBPO 5中的最低5d态处于相对较高的能量.讨论了MBPO_5的结构特征对Ce ~（3+）发光行为的影响。
The luminescent properties of Ce3+ions in alkaline earth borophosphates MBPO5(M=Sr, Ba) were studied upon excitation in the 3.5–15eV region. In MBPO5(M=Sr, Ba; x≤0.01) solid solutions two principal Ce3+centers are observed. The dominant center was found to be produced by the direct substitution of the dopant ion for M2+without a local charge compensation. The other center is ascribed to an associate of a Ce3+ion and a point defect. It was shown that the lowest 5d state of Ce3+in MBPO5is at relatively high energy due to the high degree of ionicity of the MO bond. The influence of the structural features of MBPO5on the luminescent behavior of Ce3+is discussed.