Tailoring Nucleation Dynamics in Perovskite Single Crystal for High-Sensitivity X-Ray Detection and Imaging
In this research, we present a nucleation modulation strategy that incorporates bromoacetic acid to regulate the nucleation and growth of MAPbBr<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2.94</sub>Cl<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0.06</sub> perovskite, effectively minimizing defects and facilitating high-quality single crystals with minimal time expenditure. As a result, the X-ray detector based on the optimized perovskite achieved an record high X-ray sensitivity of 5.4 × 10<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sup> μC Gy<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">air</sub><sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup> cm<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-2</sup> among planar MAPbBr<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> devices and a detection limit as low as 17.8 nGy<sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">air</sub> s<sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-1</sup>, which is ascribed to effectively reduced dark current and 2.2 times higher carrier mobility-life time products than the control sample. This result highlights the potential of achieving high-performance perovskite X-ray detectors via time-saving and facile strategies on nucleation dynamics.
Authors
- Xiaohu Hou (ORCID: https://orcid.org/0009-0002-2246-4538)
- Shibing Long (ORCID: https://orcid.org/0000-0001-6220-4461)
- Jing Wang (ORCID: https://orcid.org/0009-0005-1064-1906)
- Long Cheng (ORCID: https://orcid.org/0000-0002-7084-5821)
- Mingzhu Hu (ORCID: https://orcid.org/0009-0002-8373-4888)
- Xiaolong Zhao (ORCID: https://orcid.org/0000-0001-5307-9187)
- Pengju Tan
- Xiaolan Ma (ORCID: https://orcid.org/0009-0009-1281-6043)
- Tianyu Liu (ORCID: https://orcid.org/0000-0003-3100-7216)
- Shunjie Yu (ORCID: https://orcid.org/0009-0008-4475-4388)
- Qin Hu (ORCID: https://orcid.org/0000-0003-3089-1070)
- Yu Li (ORCID: https://orcid.org/0000-0002-4260-1870)
- Mulin Sun (ORCID: https://orcid.org/0000-0002-5894-3736)
- Lijuan Huang (ORCID: https://orcid.org/0000-0003-2037-4176)
- Jiayang Liu (ORCID: https://orcid.org/0000-0001-8862-7163)
- Yuangan Chen
Institutions
- University of Stuttgart (DE)
- University of Science and Technology of China (CN)
- Institute of Microelectronics (CN)
Publication Details
- Journal
- IEEE Electron Device Letters
- Published
- 2025-06-11
- DOI
- https://doi.org/10.1109/led.2025.3577990
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- University of Science and Technology of China