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Highly Efficient and Flexible Scintillation Screen Based on Manganese (II) Activated 2D Perovskite for Planar and Nonplanar High‐Resolution X‐Ray Imaging

X‐ray imaging technology covers a wide range of applications in the medical, industrial, and scientific research fields. Highly sensitive, flexible, and cost‐effective scintillation screens are of great importance for X‐ray imaging applications. In this paper, manganese (II) activated 2D butylammoni...

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Bibliographic Details
Published in:Advanced optical materials 2022-03, Vol.10 (6), p.n/a
Main Authors: Shao, Wenyi, Wang, Xiang, Zhang, Zhenzhong, Huang, Jie, Han, Zhongyuan, Pi, Shuai, Xu, Qiang, Zhang, Xiaodong, Xia, Xiaochuan, Liang, Hongwei
Format: Article
Language:English
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Summary:X‐ray imaging technology covers a wide range of applications in the medical, industrial, and scientific research fields. Highly sensitive, flexible, and cost‐effective scintillation screens are of great importance for X‐ray imaging applications. In this paper, manganese (II) activated 2D butylammonium lead bromide perovskite, namely BA2PbBr4:Mn (II), is demonstrated as a highly efficient and low‐cost X‐ray scintillator. The appropriate amount of Mn (II) dopant can act as an activator for achieving the optimization of luminescence performance through efficient energy transfer. This produces a large Stokes shift thus almost eliminates the effect of self‐absorption. As a result, the optimal BA2PbBr4:10% Mn (II) perovskite scintillator demonstrates an ultrahigh sensitivity for X‐ray, with a high X‐ray scintillation light yield of up to 85 ± 5 photons keV−1 and low detection limits of 16 nGyair s−1 at the signal‐to‐noise ratio (SNR) of 3. Well‐resolved X‐ray images of several planar and nonplanar objects are obtained using a flexible large‐dimensional scintillation screen fabricated by blade‐coating strategy, featuring high spatial resolution of 10.7 lp mm−1 at modulation transfer function = 0.2. These results indicate that Mn (II) activated BA2PbBr4 perovskite with remarkable scintillation performances can serve as a highly promising scintillator for commercial high‐resolution X‐ray imaging applications. The highly sensitive flexible scintillator BA2PbBr4:Mn (II) combines the comprehensive performance of high X‐ray scintillation light yield, negligible self‐absorption, low detection limit, low afterglow, ideal irradiation resistance, and low‐cost. Large‐dimensional scintillation screen exhibits high spatial resolution in X‐ray imaging. Particularly, it can eliminate image distortion and overlap in X‐ray imaging of nonplanar objects compared with traditional inflexible scintillators.
ISSN:2195-1071
2195-1071
DOI:10.1002/adom.202102282