Luminescence properties of Sm3+-doped Sr3Sn2O7 phosphor
Luminescence properties of Sm3+-doped Sr3Sn2O7 phosphor
复制标题
Sm3掺杂Sr3Sn2O7荧光粉的发光性能
DOI：
10.1016/j.matchemphys.2010.08.032
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发表时间：
2010-12-01
影响因子：
4.6
通讯作者：
Yue, Song
中科院分区：
文献类型：
--
作者：
Lei, Bingfu;Man, Shi-Qing;Yue, Song
本文报道了Sm ~（3+）掺杂Sr_3Sn_2O_7余辉发光材料的发光现象，用X射线衍射、光致发光、余辉发射光谱和长余辉衰减曲线对该材料进行了表征。在267 nm紫外光照射下，Sm ~（3+）掺杂Sr_3Sn_2O_7余辉发光材料在（4）G（5/2）~ H-6（f）范围内发出强烈的橙红色余辉。（J=5/2 7/2 9/2）跃迁及其余辉在黑暗中肉眼可见，除去激发源后1 h以上仍清晰可见。光致发光谱表明，这种红橙色发光的长余辉是由Sm ~（3+）特征跃迁的混合物产生的。掺杂Sr_3Sn_2O_7荧光粉含有一个快衰减组分和一个慢衰减组分，并根据实验结果讨论了这种红橙色发光LLP荧光粉的可能机理
We report on a luminescent phenomenon in Sm3+-doped Sr3Sn2O7 afterglow phosphor XRD photoluminescence afterglow emission spectra and long-lasting phosphorescence decay curve are used to characterize this phosphor After irradiation by a 267-nm UV light for 5 min the Sm3+-doped Sr3Sn2O7 phosphor emits intense reddish-orange emitting afterglow from the (4)G(5/2) to H-6(f) (J=5/2 7/2 9/2) transitions and its afterglow can be seen with the naked eye in the dark clearly for more than 1 h after removal of the excitation source Photoluminescence spectra reveal that the reddish-orange light-emitting long-lasting phosphorescence originate from the mixture of Sm3+ characteristic transitions The afterglow decay curve of the Sm3+-doped Sr3Sn2O7 phosphor contains a fast decay component and another slow decay one The possible mechanism of this reddish-orange light-emitting LLP phosphor is also discussed based on the experiment results (c) 2010 Elsevier BV All rights reserved