Tellurium-Doped 0D Organic–Inorganic Hybrid Lead-Free Perovskite for X-ray Imaging
Zixian Wang, Daofu Wu, Qiang Huang, Linfeng Guo, Yijia Wang, Wei Wei Chen, Fei Wang, Juan Du, Zhengzheng Liu, Zhiping Hu, Yuxin Leng, Jun’an Lai, Peng He, Xiaosheng Tang
Abstract
The application of X-ray imaging in military, industrial flaw detection, and medical examination is inseparable from the wide application of scintillator materials. In order to substitute for lead, lower costs, and reduce self-absorption, organic–inorganic hybrid lead-free perovskite scintillators are emerging as a new option. In this work, novel (TEA) 2 Zr 1– x Te x Cl 6 perovskite microcrystals (MCs) were successfully synthesized by a hydrothermal method, with Te 4+ doping, which leads to yellow triplet-state self-trapped excitons emission. The emission peak of (TEA) 2 Zr 1– x Te x Cl 6 located at 605 nm under X-ray excitation, which was applied to X-ray imaging, shows a clear wiring structure inside the USB connector. The detection limit (DL) of 820 n Gy air /s for (TEA) 2 Zr 0.9 Te 0.1 Cl 6 is well below the dose rate corresponding to a standard medical X-ray diagnosis is 5.5 μGy air /s. This work opens up a new path for organic–inorganic hybrid lead-free scintillators.