Enhancement of the energy resolution of CsI(Na) scintillators by photonic crystals prepared with dry-transfer technique.
Enhancement of the energy resolution of CsI(Na) scintillators by photonic crystals prepared with dry-transfer technique.
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DOI：
10.1364/oe.404815
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发表时间：
2020-09
期刊：
影响因子：
3.8
通讯作者：
X. Ouyang;Bo Liu;Xincheng Xiang;Zhichao Zhu;Liang Chen;Xiaojing Song;Di Yuan;Chuanxiang Chen
中科院分区：
文献类型：
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作者：
X. Ouyang;Bo Liu;Xincheng Xiang;Zhichao Zhu;Liang Chen;Xiaojing Song;Di Yuan;Chuanxiang Chen
在光子晶体表面涂覆光子晶体可以部分消除光的全内反射，从而提高光的提取效率。然而，传统的自组装技术不适用于吸湿除湿器。在本研究中，我们提出了一种有效的方法来制备的CsI（Na）吸湿膨胀剂表面的光子晶体相结合的聚苯乙烯（PS）微球的自组装和随后的干转移过程。为了获得最佳的光子晶体参数，CsI（Na）样品的光输出增强了43.2%相比，没有光子晶体的参考样品的激发下的α粒子从241 Am源。能量分辨率从11.2%提高到7.8%。这种基于干转移法的光子晶体制备技术在吸湿材料的制备中具有良好的前景。
Photonic crystals coated on the surface of scintillators can be used to improve the light extraction efficiency by partially eliminating the total internal reflection. However, the traditional self-assembly technique is not applicable to the hygroscopic scintillators. In the present investigation, we have proposed an efficient method to prepare the photonic crystals on the surface of CsI(Na) hygroscopic scintillators by a combination of the self-assemble of polystyrene (PS) microspheres and the subsequent dry-transfer procedure. For obtaining optimal parameters of photonic crystals, the light output of the CsI(Na) sample is enhanced by 43.2% compared to the reference sample without photonic crystals under the excitation of alpha particles from 241Am source. The energy resolution is improved from 11.2% to 7.8%. This technique based on the dry-transfer procedure has a promising prospect in the preparation of photonic crystals for hygroscopic scintillators.