Citation: | Mingyue Han, Yingrui Xiao, Chao Zhou, Yuxuan Yang, Xiaoxue Wu, Qi Hu, Xi Jin, Wei Zhang, Jinsong Hu, Yan Jiang. Recent advances on two-dimensional metal halide perovskite x-ray detectors[J]. Materials Futures, 2023, 2(1): 012104. doi: 10.1088/2752-5724/acba36 |
In recent years, two-dimensional metal halide perovskites (MHPs) have attracted increased attention for radiation detection and imaging. Their detection efficiencies are almost comparable to three-dimensional (3D) perovskites. Meanwhile, they demonstrate superior stability to 3D perovskites. The pursuit of high-quality, phase-pure and lead-free two-dimensional MHP materials and large-area fabrication capability for x-ray detectors are among the research hotspots. In this review, we first give a brief introduction of the crystallographic structure, optoelectronic characteristics and preparation methods of high-quality two-dimensional perovskites. In addition, we overview the general working principles of direct and indirect x-ray detection processes and the corresponding performance metrics from the perspective of detection and imaging. Furthermore, we provide a comprehensive discussion on the recent advances in 2D perovskite x-ray detectors and imaging devices. Finally, we pinpoint several major obstacles of 2D x-ray detectors that should be overcome in the near future.
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