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首页> 外文期刊>Optical Materials >The persistent energy transfer of Eu~(2+) and MN_(2+) and the thermoluminescence properties of long-lasting phosphor Sr_3MgSi2O_8:Eu~(2+), MN_(2+), Dy~(3+)
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The persistent energy transfer of Eu~(2+) and MN_(2+) and the thermoluminescence properties of long-lasting phosphor Sr_3MgSi2O_8:Eu~(2+), MN_(2+), Dy~(3+)

机译：Eu〜（2+）和MN_（2+）的持久能量转移以及长效荧光粉Sr_3MgSi2O_8：Eu〜（2 +），MN_（2 +），Dy〜（3+）的热致发光特性

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摘要

Eu~(2+), MN_(2+) and Dy~(3+) co-doped long-lasting phosphors Sr_3MgSi_2O_8 were prepared by a solid-state reaction under a reductive atmosphere. Fluorescence spectra demonstrated that the weak red emission resulting from the forbidden transition of MN_(2+) could be enhanced by the energy transfer from Eu_(2+) to MN_(2+). The energy transfer between Eu_(2+) and MN_(2+) was systematically investigated. The phosphorescence spectra revealed that Eu~(2+) could persistently transfer its energy to MN_(2+) after removing the excitation source. The duration of MN_(2+) can prolong to more than 2 h. The thermoluminescence spectra were used to characterize the ability of the trap to trapping the carriers. By the analysis of the ionization potentials, the roles of MN_(2+) and Dy~(3+) in the afterglow process were discussed. A possible afterglow mechanism was presented and discussed.
机译：在还原性气氛下通过固相反应制备了Eu〜（2 +），MN_（2+）和Dy〜（3+）共掺杂的长效荧光粉Sr_3MgSi_2O_8。荧光光谱表明，MN_（2+）禁止跃迁引起的弱红色发射可以通过Eu_（2+）到MN_（2+）的能量转移而增强。系统研究了Eu_（2+）与MN_（2+）之间的能量转移。磷光光谱表明，去除激发源后，Eu〜（2+）可以将其能量持久地传递给MN_（2+）。 MN_（2+）的持续时间可以延长到2小时以上。使用热致发光光谱来表征陷阱捕获载流子的能力。通过电离势的分析，讨论了MN_（2+）和Dy〜（3+）在余辉过程中的作用。提出并讨论了可能的余辉机制。

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