Luminescent properties of orange-emitting long-lasting phosphorescence phosphor Ca2SnO4:Sm3+
Luminescent properties of orange-emitting long-lasting phosphorescence phosphor Ca2SnO4:Sm3+
复制标题
DOI：
10.1016/j.solidstatesciences.2010.12.019
复制
发表时间：
2011-03-01
影响因子：
3.5
通讯作者：
Man, Shi-qing
中科院分区：
文献类型：
--
作者：
Lei, Bingfu;Zhang, Haoran;Man, Shi-qing
采用高温固相反应法合成了一种新型的长余辉发光材料Ca_2SnO_4：Sm ~（3+），该材料在紫外光激发下发出橙子光。利用x射线衍射、光致发光、激发态衰减曲线和长余辉衰减曲线对材料的性质进行了表征和分析。在252 nm的紫外光照射下，Ca_2SnO_4：Sm ~（3+）发射出强烈的橙子余辉，余辉来源于（4）G（5/2）→ H-6（J）（J = 5/2，7/2，9/2）跃迁。的余辉衰减曲线的Sm 3+掺杂的Ca 2SnO 4磷光体表示快速和缓慢的衰减成分。由于后者的存在，余辉可以在黑暗中用肉眼清晰地观察到超过1小时后。并根据实验结果讨论了这种长余辉的可能机理。(C)2010年Elsevier Masson SAS。All rights reserved.
A new long-lasting phosphorescence phosphor, Ca2SnO4:Sm3+, which emits orange light upon UV-excitation, has been successfully obtained by a conventional high-temperature solid-state reaction method. Its properties have been characterized and analyzed by utilizing x-ray diffraction, photoluminescence, excited-state decay curve and long-lasting phosphorescence decay curve. After irradiation with 252-nm ultraviolet light, Ca2SnO4:Sm3+ emits intense orange afterglow originating from the (4)G(5/2) to H-6(J) (J = 5/2,7/2,9/2) transitions. The afterglow decay curve of the Sm3+-doped Ca2SnO4 phosphor indicates both fast and slow decay components. Due to the presence of the latter one, the afterglow can be clearly observed with the naked eyes in the dark for more than 1 h after. The possible mechanism of this long-lasting phosphorescence has also been discussed based on the experimental results. (C) 2010 Elsevier Masson SAS. All rights reserved.