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Oriented-Structured CsCu2I3 Film by Close-Space Sublimation and Nanoscale Seed Screening for High-Resolution X-ray Imaging
Nano Letters ( IF 9.6 ) Pub Date : 2021-01-22 , DOI: 10.1021/acs.nanolett.0c04197 Muyi Zhang 1 , Jinsong Zhu 1 , Bo Yang 1 , Guangda Niu 1 , Haodi Wu 1 , Xue Zhao 1 , Lixiao Yin 1 , Tong Jin 1 , Xinyi Liang 1 , Jiang Tang 1
Nano Letters ( IF 9.6 ) Pub Date : 2021-01-22 , DOI: 10.1021/acs.nanolett.0c04197 Muyi Zhang 1 , Jinsong Zhu 1 , Bo Yang 1 , Guangda Niu 1 , Haodi Wu 1 , Xue Zhao 1 , Lixiao Yin 1 , Tong Jin 1 , Xinyi Liang 1 , Jiang Tang 1
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An all-inorganic lead-free halides Cs–Cu–I system, represented by Cs3Cu2I5 and CsCu2I3, has attracted attention for their good photophysical characteristics recently. Successive works had reported their application potential in light-emitting devices. However, there is no report for CsCu2I3 in X-ray scintillation detectors so far. We notice that CsCu2I3 may be advantageous in such an application due to the one-dimensional crystal structure, the congruent-melting feature, and the high spectral matching to some photosensors. In this work, we explore the scintillation properties and imaging application of CsCu2I3 in X-ray scintillator detector. The oriented structure is designed to enhance the imaging performance of a CsCu2I3 detector. Close-space sublimation process and nanoscale seed screening strategy are employed to realize this design by producing a large-area (25 cm2) CsCu2I3 thick film layer with the oriented nanorod structure. This CsCu2I3 detector eventually achieves a high spatial resolution of 7.5 lp mm–1 in X-ray imaging.
中文翻译：
近距离升华和纳米级种子筛选的定向结构CsCu 2 I 3膜用于高分辨率X射线成像
以Cs 3 Cu 2 I 5和CsCu 2 I 3为代表的全无机无铅卤化物Cs-Cu-I系统最近因其良好的光物理特性而受到关注。连续的工作报告了它们在发光器件中的应用潜力。然而，到目前为止，尚无关于X射线闪烁探测器中CsCu 2 I 3的报道。我们注意到CsCu 2 I 3由于一维晶体结构，全融特征以及与某些光电传感器的高光谱匹配，在这种应用中可能是有利的。在这项工作中，我们探索了CsCu 2 I 3在X射线闪烁探测器中的闪烁特性和成像应用。定向结构旨在增强CsCu 2 I 3检测器的成像性能。通过产生具有定向纳米棒结构的大面积（25 cm 2）CsCu 2 I 3厚膜层，采用近空间升华工艺和纳米级种子筛选策略来实现此设计。该CsCu 2 I 3探测器最终在X射线成像中实现了7.5 lp mm –1的高空间分辨率。
更新日期：2021-02-10
中文翻译：
近距离升华和纳米级种子筛选的定向结构CsCu 2 I 3膜用于高分辨率X射线成像
以Cs 3 Cu 2 I 5和CsCu 2 I 3为代表的全无机无铅卤化物Cs-Cu-I系统最近因其良好的光物理特性而受到关注。连续的工作报告了它们在发光器件中的应用潜力。然而，到目前为止，尚无关于X射线闪烁探测器中CsCu 2 I 3的报道。我们注意到CsCu 2 I 3由于一维晶体结构，全融特征以及与某些光电传感器的高光谱匹配，在这种应用中可能是有利的。在这项工作中，我们探索了CsCu 2 I 3在X射线闪烁探测器中的闪烁特性和成像应用。定向结构旨在增强CsCu 2 I 3检测器的成像性能。通过产生具有定向纳米棒结构的大面积（25 cm 2）CsCu 2 I 3厚膜层，采用近空间升华工艺和纳米级种子筛选策略来实现此设计。该CsCu 2 I 3探测器最终在X射线成像中实现了7.5 lp mm –1的高空间分辨率。
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