期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 11, 期 21, 页码 9203-9209出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.0c02570
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资金
- National Nature Science Foundation of China (NSFC) [11664022, 61965012]
- Reserve talents project of Yunnan Province [2017HB011]
- Yunnan Ten Thousand Talents Plan Young & Elite Talents Project [YNWR-QNBJ-2018-295, YNWR-QNBJ-2018-325]
- Excellent Youth Project of Yunnan Province Applied Basic Research Project [2019FI001]
- Foundation of Natural Science of Yunnan Province [2019HC016]
All-inorganic perovskites of CsPbBr3 nanocrystals (NCs) exhibit strong X-ray absorption and have been demonstrated to be highly efficient scintillators for X-ray detection and imaging. However, the long-term stability of the perovskite remains a major hurdle in practical applications, especially under a commercial dose of X-ray irradiation (0.5-5.5 mGy.s(-1)). Herein, with a solution-protected annealing approach reconstructing the CsPbBr3 NCs free from undesired defects, the perovskite scintillators provide a long-term (similar to 3600 s) stable visualization tool for X-ray radiography (1.44 x 10(6) captured images for the exposure time of 2.5 ms per image) under the irradiation dose of 1 mGy.s(-1). This work opens a window for the stability of perovskite scintillators and demonstrates their robust and long-term efficient radioluminescence (RL) for low-cost radiography and X-ray imaging application.
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