Citation: Pan Gao, Qingzheng Kong, Ying Sun, Qian Ma, Qi Wang, Zeyu Guo, Ledi Li, Bingbing Li, Jingwei Xu, Xiaomei Jiang, Zhaolai Chen. One-dimensional (C12H12N)3Cu3I6 for high-performance direct X-ray detection[J]. Chinese Journal of Structural Chemistry, ;2026, 45(1): 100767. doi: 10.1016/j.cjsc.2025.100767 shu

One-dimensional (C12H12N)3Cu3I6 for high-performance direct X-ray detection

X-ray detectors, as crucial elements in medical imaging and industrial fields, can be categorized into direct and indirect types. Direct detectors, which directly convert X-ray photons into electrical signals, exhibit high sensitivity and low detection limits, enabling the capture of high-resolution images and reducing radiation exposure to patients. Organic copper halides, recognized as potential active materials for X-ray detection, have been widely explored in the indirect scintillation field but remain under-explored in direct X-ray detector applications. In this work, (C12H12N)3Cu3I6 is demonstrated as an efficient semiconductor for direct X-ray detection with excellent stability. A lateral-structured X-ray detector was fabricated with gold electrodes, which exhibits a maximum sensitivity of 1464.14 μC·Gy-1·cm-2, a lowest detection limit of 19.8 nGy·s-1, a high on-off ratio of 2140, and an excellent operational stability of retaining 96% performance after 600 s continuous X-ray radiation. Furthermore, the detector successfully imaged a 0.1 mm “F”-shaped lead sheet, validating its capacity for X-ray imaging. This study highlights the potential of (C12H12N)3Cu3I6 as a promising semiconductor for high-performance direct X-ray detection, expanding the application scope of organic copper halides in this critical field.
- Organic copper halides,
- One-dimensional structure,
- X-ray detection,
- X-ray imaging
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