Preparation of Lead-free Two-Dimensional-Layered (C8H17NH3)2SnBr4 Perovskite Scintillators and Their Application in X-ray Imaging.,ACS Applied Materials & Interfaces

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Preparation of Lead-free Two-Dimensional-Layered (C8H17NH3)2SnBr4 Perovskite Scintillators and Their Application in X-ray Imaging.
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2020-04-15 , DOI: 10.1021/acsami.0c02116
Jitao Cao _{1,

2} , Zhao Guo ₂ , Shuang Zhu ₂ , Yanyan Fu ₃ , Hao Zhang ₄ , Qing Wang ₅ , Zhanjun Gu _{2,

6}

Affiliation

Scintillators, as spectral and energy transformers, are essential for X-ray imaging applications. However, their current disadvantages, including high-temperature sintering and generation of agglomerated powders or large bulk crystals, may not meet the increasing demands of low cost, nontoxicity, and flexible radiation detection. Thus, improved perovskite scintillators are developed in this research. A hybrid perovskite ((C8H17NH3)2SnBr4), which is nontoxic, lead-free, and organic-inorganic, is developed as a scintillator with good emission performance and radioluminescence intensity. These perovskite scintillators are synthesized at low temperatures in an aqueous acid solution, through which they generate a near-unity photoluminescence quantum yield of 98% with the excitation of ultraviolet light. As far as we know, this work is the first to show that the two-dimensional (2D) (C8H17NH3)2SnBr4 perovskite scintillator films prepared by coating a polymer layer can be applied to an X-ray imaging system. The results demonstrate that the low cost X-ray imaging device with good resolution and performance benefits dramatically from this lead-free organic-inorganic hybrid perovskite film. Therefore, this 2D-layered (C8H17NH3)2SnBr4 perovskite scintillator may be a high potential candidate for scintillating material for X-ray imaging techniques.

中文翻译：

无铅二维（C8H17NH3）2SnBr4钙钛矿闪烁体的制备及其在X射线成像中的应用。

闪烁体，作为光谱和能量转换器，对于X射线成像应用至关重要。然而，它们当前的缺点，包括高温烧结和结块粉末或大块晶体的产生，可能无法满足对低成本，无毒和放射线检测的日益增长的需求。因此，在该研究中开发了改进的钙钛矿闪烁体。开发了一种无毒，无铅和有机无机的杂化钙钛矿（（C8H17NH3）2SnBr4）作为闪烁体，具有良好的发射性能和放射发光强度。这些钙钛矿闪烁体是在酸性水溶液中在低温下合成的，通过它们，它们在紫外光的激发下产生98％的近统一光致发光量子产率。据我们了解，这项工作是第一个证明可以将通过涂覆聚合物层制备的二维（2D）（C8H17NH3）2SnBr4钙钛矿闪烁体薄膜应用于X射线成像系统。结果表明，具有良好分辨率和性能的低成本X射线成像设备可从这种无铅有机-无机杂化钙钛矿膜中受益匪浅。因此，这种2D层的（C8H17NH3）2SnBr4钙钛矿闪烁体可能是X射线成像技术的闪烁材料的高潜力候选者。结果表明，具有良好分辨率和性能的低成本X射线成像设备可从这种无铅有机-无机杂化钙钛矿膜中受益匪浅。因此，这种2D层的（C8H17NH3）2SnBr4钙钛矿闪烁体可能是X射线成像技术的闪烁材料的高潜力候选者。结果表明，具有良好分辨率和性能的低成本X射线成像设备可从这种无铅有机-无机杂化钙钛矿膜中受益匪浅。因此，这种2D层的（C8H17NH3）2SnBr4钙钛矿闪烁体可能是X射线成像技术的闪烁材料的高潜力候选者。

更新日期：2020-04-23

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