Highly sensitive diamond X-ray detector array for high-temperature applications
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2024-08-05 |
| Journal | Chip |
| Authors | Wenjie Dou, Chaonan Lin, Wei Fan, Xun Yang, Chao Fang |
| Institutions | Xuchang University, China Academy of Engineering Physics |
| Citations | 9 |
Abstract
Section titled āAbstractāDiamond is a highly suitable material for X-ray detectors that can function effectively in harsh environments due to its unique properties such as ultrawide bandgap, high radiation resistance, excellent carrier mobility as well as remarkable chemical and thermal stability. However, the sensitivity of diamond X-ray detectors needs further improvement due to the relatively low X-ray absorption efficiency of diamond, and the exploration of single-crystal diamond array imaging still remains unexplored. In the current work, a 10 Ć 10 X-ray photodetector array was constructed from single-crystal diamond. To improve the sensitivity of the diamond X-ray detector, an asymmetric sandwich electrode structure was utilized. Additionally, trenches were created through laser cutting to prevent crosstalk between adjacent pixels. The diamond X-ray detector array exhibits exceptional performance, including a low detection limit of 4.9 nGy sā1, a sensitivity of 14.3 mC Gyā1 cmā2, and a light-dark current ratio of 18,312, which are among the most favorable values ever reported for diamond X-ray detectors. Furthermore, these diamond X-ray detectors can operate at high temperatures up to 450 Ā°C, making them suitable for development in harsh environments.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2023 - X-ray-to-visible light-field detection through pixelated colour conversion [Crossref]
- 2023 - Stable perovskite single-crystal X-ray imaging detectors with single-photon sensitivity [Crossref]
- 2023 - Perovskite-like silver halide single-crystal microbelt enables ultrasensitive flexible X-ray detectors [Crossref]
- 2022 - Oriented 2D perovskite wafers for anisotropic X-ray detection through a fast tableting strategy [Crossref]
- 2023 - Printable perovskite diodes for broad-spectrum multienergy X-ray detection [Crossref]
- 2021 - High-performance X-ray detector based on single-crystal Ī²-Ga2O3:Mg [Crossref]
- 2022 - Spatially nanoconfined N-type polymer semiconductors for stretchable ultrasensitive X-ray detection [Crossref]
- 2022 - Sensitivity and detection limit of spectroscopic-grade perovskite CsPbBr3 crystal for hard X-ray detection [Crossref]
- 2021 - Determination of X-ray detection limit and applications in perovskite X-ray detectors [Crossref]
- 2021 - Ga2O3 based multilevel solar-blind photomemory array with logic, arithmetic, and image storage functions [Crossref]