探测器
X射线探测器
CMOS芯片
材料科学
图像分辨率
X射线
光电子学
灵敏度(控制系统)
分辨率(逻辑)
图像传感器
光学
物理
计算机科学
人工智能
电子工程
工程类
作者
Yanliang Liu,C. Gao,Lei Dong,Xinan Zhang,Jiongtao Zhu,Meng Wang,Li Chen,Tingting Shi,Xingchen He,Jiahong Wang,Hao Huang,Zonghai Sheng,Dong Liang,Xue‐Feng Yu,Hairong Zheng,Xiaoying Sun,Yongshuai Ge
标识
DOI:10.1038/s41467-024-45871-2
摘要
Abstract High performance X-ray detector with ultra-high spatial and temporal resolution are crucial for biomedical imaging. This study reports a dynamic direct-conversion CMOS X-ray detector assembled with screen-printed CsPbBr 3 , whose mobility-lifetime product is 5.2 × 10 −4 cm 2 V –1 and X-ray sensitivity is 1.6 × 10 4 µC Gy air –1 cm –2 . Samples larger than 5 cm $$\times$$ × 10 cm can be rapidly imaged by scanning this detector at a speed of 300 frames per second along the vertical and horizontal directions. In comparison to traditional indirect-conversion CMOS X-ray detector, this perovskite CMOS detector offers high spatial resolution (5.0 lp mm −1 ) X-ray radiographic imaging capability at low radiation dose (260 nGy). Moreover, 3D tomographic images of a biological specimen are also successfully reconstructed. These results highlight the perovskite CMOS detector’s potential in high-resolution, large-area, low-dose dynamic biomedical X-ray and CT imaging, as well as in non-destructive X-ray testing and security scanning.
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