Two-Dimensional Perovskite Single Crystals for High-Performance X-ray Imaging and Exploring MeV X-ray Detection
Xieming Xu , Yiheng Wu , Yi Zhang , Xiaohui Li , Fang Wang , Xiaoming Jiang , Shaofan Wu , Shuaihua Wang
Energy & Environmental Materials ›› 2024, Vol. 7 ›› Issue (1) : 12487
Two-Dimensional Perovskite Single Crystals for High-Performance X-ray Imaging and Exploring MeV X-ray Detection
Scintillation semiconductors play increasingly important medical diagnosis and industrial inspection roles. Recently, two-dimensional (2D) perovskites have been shown to be promising materials for medical X-ray imaging, but they are mostly used in low-energy (≤130 keV) regions. Direct detection of MeV X-rays, which ensure thorough penetration of the thick shell walls of containers, trucks, and aircraft, is also highly desired in practical industrial applications. Unfortunately, scintillation semiconductors for high-energy X-ray detection are currently scarce. Here, This paper reports a 2D (C4H9NH3)2PbBr4 single crystal with outstanding sensitivity and stability toward X-ray radiation that provides an ultra-wide detectable X-ray range of between 8.20 nGyair s-1 (50 keV) and 15.24 mGyair s-1 (9 MeV). The (C4H9NH3)2PbBr4 single-crystal detector with a vertical structure is used for high-performance X-ray imaging, delivering a good spatial resolution of 4.3 lp mm-1 in a plane-scan imaging system. Low ionic migration in the 2D perovskite enables the vertical device to be operated with hundreds of keV to MeV X-ray radiation at high bias voltages, leading to a sensitivity of 46.90 μC Gyair-1 cm-2 (-1.16 V μm-1) with 9 MeV X-ray radiation, demonstrating that 2D perovskites have enormous potential for high-energy industrial applications.
MeV X-ray detection / single-crystal X-ray detectors / two-dimensional perovskites / X-ray imaging
| [1] |
|
| [2] |
|
| [3] |
|
| [4] |
|
| [5] |
|
| [6] |
|
| [7] |
|
| [8] |
|
| [9] |
|
| [10] |
|
| [11] |
|
| [12] |
|
| [13] |
|
| [14] |
|
| [15] |
|
| [16] |
|
| [17] |
|
| [18] |
|
| [19] |
|
| [20] |
|
| [21] |
|
| [22] |
|
| [23] |
|
| [24] |
|
| [25] |
|
| [26] |
|
| [27] |
|
| [28] |
|
| [29] |
|
| [30] |
|
| [31] |
|
| [32] |
|
| [33] |
|
| [34] |
|
| [35] |
|
| [36] |
|
| [37] |
|
| [38] |
|
| [39] |
|
| [40] |
|
| [41] |
|
| [42] |
|
| [43] |
|
| [44] |
Consultation WHO , Bull. W.H.O 1990, 68, 297. |
| [45] |
|
| [46] |
|
| [47] |
|
| [48] |
|
| [49] |
|
| [50] |
|
| [51] |
|
2022 The Authors. Energy & Environmental Materials published by John Wiley & Sons Australia, Ltd on behalf of Zhengzhou University.
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