Experimental insights on the electron transfer and energy transfer processes between Ce3+-Yb3+ and Ce3+-Tb3+ in borate glass
Experimental insights on the electron transfer and energy transfer processes between Ce3+-Yb3+ and Ce3+-Tb3+ in borate glass
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DOI：
10.1063/1.4916946
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发表时间：
2015-04
影响因子：
4
通讯作者：
A. Sontakke;J. Ueda;Y. Katayama;P. Dorenbos;S. Tanabe
中科院分区：
文献类型：
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作者：
A. Sontakke;J. Ueda;Y. Katayama;P. Dorenbos;S. Tanabe
基于温度依赖性供体发光衰变动力学，提出了一种描述镧系离子间电子转移和能量转移过程的简便方法。Ce3+-Yb3+中的电子转移过程随着温度的升高而稳步上升，而Ce3+-Tb3+的能量转移几乎不受影响。利用速率方程模型研究了这一特征，并提出了一种定量估计相互作用参数的方法。此外，讨论了硼酸盐玻璃基质中电子转移和能量转移过程对施主-受主发光行为、量子效率和施主发光衰减动力学的总体影响。本研究的结果提出了一种直接的方法来区分介电介质中镧系离子之间的电子转移和能量转移过程，鉴于近年来镧系掺杂材料在光谱转换、持续发光和相关应用方面的发展，这是非常有利的。
A facile method to describe the electron transfer and energy transfer processes among lanthanide ions is presented based on the temperature dependent donor luminescence decay kinetics. The electron transfer process in Ce3+-Yb3+ exhibits a steady rise with temperature, whereas the Ce3+-Tb3+ energy transfer remains nearly unaffected. This feature has been investigated using the rate equation modeling and a methodology for the quantitative estimation of interaction parameters is presented. Moreover, the overall consequences of electron transfer and energy transfer process on donor-acceptor luminescence behavior, quantum efficiency, and donor luminescence decay kinetics are discussed in borate glass host. The results in this study propose a straight forward approach to distinguish the electron transfer and energy transfer processes between lanthanide ions in dielectric hosts, which is highly advantageous in view of the recent developments on lanthanide doped materials for spectral conversion, persistent luminescence, and related applications.