An approach to achieve significantly faster luminescence decay of thin-film scintillator by surface plasmons
An approach to achieve significantly faster luminescence decay of thin-film scintillator by surface plasmons
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DOI：
10.1063/1.4864634
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发表时间：
2014-02
影响因子：
4
通讯作者：
Bo Liu;Zhichao Zhu;Jingtao Zhu;Shuanghao Wu;Hong Chen;M. Gu;Qian Cheng;Chuanwei Cheng;Zhanshan Wang;Yuping Zhao;Qingli Zhang
中科院分区：
文献类型：
--
作者：
Bo Liu;Zhichao Zhu;Jingtao Zhu;Shuanghao Wu;Hong Chen;M. Gu;Qian Cheng;Chuanwei Cheng;Zhanshan Wang;Yuping Zhao;Qingli Zhang
通过闪烁体与银纳米颗粒表面等离子体的耦合，实现了来自LSO薄膜闪烁体的2.2 ns的快分量。从发射光谱来看，观测到的快成分来自LSO中Ce ~（3+）的5d ~ 4f能级跃迁。快分量归因于由于表面等离子体激元而增强的自发复合速率。本演示提供了一个有趣的方法来提高闪烁体的时间分辨率，这是区别于这些传统的方法。
A fast component of 2.2 ns from the LSO thin-film scintillator was achieved through coupling of scintillator with surface plasmons of silver nanoparticles. From the emission spectra, the observed fast component is from the transition of 5d to 4f level of Ce3+ in LSO. The fast component is attributed to the enhanced spontaneous recombination rate due to the surface plasmons. The present demonstration provides an interesting approach to improve the timing resolution of scintillator, which is distinguished from these conventional methods.