Photoluminescence and long persistent luminescence properties of a novel green emitting phosphor Sr3TaAl3Si2O14:Tb3+

Photoluminescence and long persistent luminescence properties of a novel green emitting phosphor Sr3TaAl3Si2O14:Tb3+
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新型绿色荧光粉Sr3TaAl3Si2O14:Tb3的光致发光和长余辉特性

DOI:
10.1007/s00339-016-0139-z
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发表时间:
2016-05
影响因子:
2.7
通讯作者:
Lin Jun
Lin Jun
中科院分区:
材料科学4区
文献类型:
--
作者:
Xue Feihong;Hu Yihua;Ju Guifang;Chen Li;He Miao;Wang Tao;Jin Yahong;Zhang Shaoan;Lin Jun

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采用常规固相反应法制备了一系列绿色发光持久性荧光粉Sr3TaAl3Si2O14:Tb3+。在254 nm紫外光照射几分钟后,这些荧光粉在室温下表现出以~542 nm为主的绿色持久发光。通过x射线衍射、扫描显微图像、光致发光光谱、衰减曲线、余辉光谱和热致发光等研究了持久性荧光粉的物理性质。研究了Tb3+浓度对材料光致发光和长持续发光性能的影响。实验结果表明,获得最佳余辉特性的Tb3+离子浓度为0.5 mol%。在实验结果的基础上,提出了一个可行的模型,详细讨论了Sr3TaAl3Si2O14:Tb3+中长余辉产生的机理。
A series of green emitting persistent phosphors Sr3TaAl3Si2O14:Tb3+were synthesized via a conventional solid-state reaction method. These phosphors show a green persistent luminescence dominated at ~542 nm at room temperature after irradiated by 254 nm ultraviolet light for minutes. X-ray diffraction, scanning micrograph images, photoluminescence spectra, decay curves, afterglow spectra and thermal luminescence were performed to investigate the physical properties of the persistent phosphors. The influence of Tb3+concentrations on the photoluminescence and long persistent luminescence properties was studied. The optimal concentration of Tb3+ions for the best afterglow characteristic was experimentally to be 0.5 mol%. A feasible model was proposed on the basis of experimental results to discuss mechanism of long afterglow in Sr3TaAl3Si2O14:Tb3+in detail.
DOI: 10.3390/ma6072789
发表时间: 2013-07-12
期刊: Materials (Basel, Switzerland)
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