Dynamic X-ray Imaging with Screen-printed Perovskite CMOS Array

Overview

Journal Nat Commun

Specialty Biology

Date 2024 Feb 21

PMID 38383659

Authors

Yanliang Liu

Chaosong Gao

Dong Li

Xin Zhang

Jiongtao Zhu

Meng Wu

Wenjun Liu

Tongyu Shi

Xingchen He

Jiahong Wang

Hao Huang

Zonghai Sheng

Dong Liang

Xue-Feng Yu

Hairong Zheng

Xiangming Sun

Yongshuai Ge

Affiliations

Soon will be listed here.

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, whose mobility-lifetime product is 5.2 × 10 cm V and X-ray sensitivity is 1.6 × 10 µC Gy cm. Samples larger than 5 cm[Formula: see text]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) 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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