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Highly Efficient and Flexible Scintillation Screen Based on Organic Mn(II) Halide Hybrids toward Planar and Nonplanar X-Ray Imaging |
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| Authors: | Wen Li Yunyun Li Ying Wang Zhengyang Zhou Chao Wang Yiyang Sun Jianyong Sheng Jiawen Xiao Qian Wang Shunsuke Kurosawa Maksym Buryi David John Karin Paurová Martin Nikl Xiaoping OuYang Yuntao Wu |
| Affiliation: | 1. Artificial Crystal Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 201899 China;2. Beijing Key Lab of Microstructure and Property of Advanced Materials, Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing, 100124 China;3. The State Key Lab of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 201899 China;4. NICHe, Tohoku University, 6-6-10 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi, 980-8579 Japan Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577 Japan Institute of Laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka, 565-0871 Japan;5. FZU–Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, Prague, 182 00 Czechia Faculty of Nuclear Sciences and Physical Engineering, Brehova 7, 115 19, Prague, Czechia;6. FZU–Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, Prague, 182 00 Czechia Department of Inorganic Chemistry, University of Chemistry and Technology, Prague, 16628 Czech Republic;7. Northwest Institute of Nuclear Technology, Xi'an, 710024 P. R. China |
| Abstract: | The urgency for cost-effective, high-resolution, flexible X-ray imaging detectors is generating great demand for scintillators with low-temperature processability, high scintillation yield, and negligible afterglow. X-ray imaging materials are currently dominated by inorganic scintillators in the form of rigid films and bulk crystals, which have inherent limitations including high-temperature, complex synthesis, and considerable challenges toward advanced nonplanar imaging. Here, high-performance and flexible X-ray scintillators based on novel zero-dimensional (0D) (BTPP)2MnX4 (BTPP = benzyltriphenylphosphonium; X = Cl, Br) halides are reported. They emit bright green light originating from the 4T1-6A1 transition of Mn2+ under X-ray excitation. In particular, (BTPP)2MnBr4 single crystals exhibit excellent air- and radiation-stability, a high scintillation yield of 53 000 photons MeV−1, a low detection limit of 89.9 nGyair s−1, and an ultralow afterglow comparable to commercial Bi4Ge3O12 (BGO) single crystals. Moreover, the (BTPP)2MnCl4@polydimethylsiloxane (PDMS) flexible scintillation screens achieve a high spatial resolution of 14.1 lp mm−1 and realize high-quality imaging results of nonplanar objects. This study demonstrates that the flexible scintillation screens based on low-dimensional Mn(II) hybrid halides have significant potential for low-dose and high-resolution X-ray imaging applications. |
| Keywords: | hybrid scintillators manganese halides scintillation screens X-ray imaging |