| Autor: |
Zhang, Hainan, Dun, Guanhua, Feng, Qixin, Zhao, Rui, Liang, Renrong, Gao, Ziyan, Hirtz, Thomas, Chen, Min, Geng, Xiangshun, Liu, Mingyang, Huang, Yao, Zheng, Xinran, Qin, Ken, Tan, Xichao, Wang, Xuefeng, Xie, Dan, Yang, Yi, Tian, He, Zhou, Yuanyuan, Padture, Nitin P. |
| Předmět: |
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| Zdroj: |
IEEE Transactions on Electron Devices; Aug2020, Vol. 67 Issue 8, p3191-3198, 8p |
| Abstrakt: |
The sensitive detection of low-dose X-ray radiation is essential to many X-ray applications. In this article, the ultrasensitive X-ray detector based on pure Cs2AgBiBr6 all-inorganic lead-free perovskite film is successfully demonstrated and encapsulated using a metal casing with a Be window. The high-quality Cs2AgBiBr6 films are obtained through the low-cost solution process with long electron–hole diffusion length (~700 nm) and long carrier lifetime (~750 ns). Benefiting from the excellent properties of the Cs2AgBiBr6 film and the stable ambient provided by the packaging module, the resulting device exhibits attractive X-ray detection capabilities with a minimum detectable dose rate of 145.2 nGyairs−1 and a detection sensitivity up to 1.8 × 104μ nGyair−1 cm−2, which is about a thousand times higher than the sensitivity achieved with commercial a-Se X-ray detectors. Besides, the encapsulated device maintains superior detection performance after 2 months of storage, indicating the favorable reliability of the encapsulated device. This article demonstrates a possibility to use Cs2AgBiBr6 perovskite film and Be window for the sensitive X-ray detection, which will inspire further development of radiation electronics by utilizing all-inorganic lead-free perovskite. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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