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- Title
Self-powered X-ray detector based on lead halide perovskites under electric field poling effect.
- Authors
Tan, Jie; Gao, Xiuying; Huang, Xiaolin; Wangyang, Peihua; Sun, Hui; Yang, Dingyu; Zeng, Tixian
- Abstract
A self-powered X-ray detector based on CH3NH3PbI3 thick film with both electron and hole transport layers has been prepared by a facile and low-cost solution method. The CH3NH3PbI3 thick film has a compact structure and a thickness of 16.5 μm processed by the doctor-blade method. The structure and thickness of CH3NH3PbI3 thick film are helpful to improve its efficiency of directly converting X-ray photons into electron-hole pairs. The photoelectric characteristics and operation mechanism with ions migration of the detector were systematically investigated. Meanwhile, the influence of the migration ions on the performance of the X-ray detector was studied by controlling the poling time of ions migration. After poling process, the sensitivity of the self-powered detector enhanced from 65 to 127 µC Gyair−1 cm− 2 under an irradiation dose rate of 0.1584 mGyair s− 1. Noticeably, with the blade-coating Carbon electrode on the surface of CH3NH3PbI3, the device without encapsulating showed good stability after being exposed to ambient air for two months.
- Publication
Journal of Materials Science: Materials in Electronics, 2023, Vol 34, Issue 15, p1
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-023-10627-z