Development of new elasticoluminescent material SrMg2(PO4)2:Eu
Development of new elasticoluminescent material SrMg2(PO4)2:Eu
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DOI：
10.1016/j.jlumin.2011.09.033
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发表时间：
2011-08
影响因子：
3.6
通讯作者：
Sunao Kamimura;H. Yamada;Chao‐Nan Xu
中科院分区：
文献类型：
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作者：
Sunao Kamimura;H. Yamada;Chao‐Nan Xu
我们成功地研制出了一种新的弹性发光材料(L弹性发光材料)，它发出肉眼可见的紫色光。SMPE可以在烧成温度下合成，该温度比本组其他材料低几百开尔文。根据弹性L发射光谱和光致发光光谱的比较，确定该发射是由于Eu2+离子从激发态4f65d1到基态4f7的电子跃迁造成的。随着胁迫的重复施加，发光逐渐减弱，紫外光(365 Nm)照射后，发光完全恢复。这一行为是缺陷控制型弹性L材料的特征，表明深电荷陷阱参与了发射过程。本文结合SMPE的热释光和电致发光光谱，详细讨论了SMPE中的弹性L机制。
We have succeeded in developing a new elasticoluminescent (elastico-L) material SrMg2(PO4)2:Eu (SMPE), which emits purple light clearly observable with the naked eye. SMPE can be synthesized at a firing temperature, which is several hundred degrees Kelvin lower than that for other materials of this group. Based on a comparison between elastico-L emission spectrum and photoluminescence spectrum, the emission was identified to be due to electron transition from an excited state 4f65d1to the ground state 4f7in Eu2+ions. While the emission gradually decayed as stress was applied repeatedly, it recovered completely upon irradiation with UV light (365nm). This behavior, characteristic to elastico-L materials of the defect-controlled type, suggests that deep charge traps are involved in the emission process. In this paper, the elastico-L mechanism in SMPE is discussed in detail with reference to its thermoluminescence and electroluminescence spectra.