Mechanochemical Synthesis of High-Entropy Perovskite toward Highly Sensitive and Stable X-ray Flat-Panel Detectors

© 2023 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 29 vom: 18. Juli, Seite e2301406
1. Verfasser: Wu, Haodi (VerfasserIn)
Weitere Verfasser: Chen, Xu, Song, Zihao, Zhang, Ao, Du, Xinyuan, He, Xin, Wang, Hanqi, Xu, Ling, Zheng, Zhiping, Niu, Guangda, Tang, Jiang
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article X-ray flat-panel detectors high-entropy perovskites mechanochemistry
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520 |a Perovskites are attracting attention for optoelectronic devices. Despite their promise, the large-scale synthesis of perovskite materials with exact stoichiometry, especially high-entropy perovskites, has been a major challenge. Moreover, the difficulty in stoichiometry control also hinders the development of perovskite X-ray flat-panel detectors. Previous reports all employed simple MAPbI3 as the active layer, while the performance still falls short of optimized single-crystal-based single-pixel detectors. Herein, a scalable and universal strategy of a mechanochemical method is adopted to synthesize stoichiometric high-entropy perovskite powders with high quality and high quantity (>1 kg per batch). By utilizing these stoichiometric perovskites, the first FA0.9 MA0.05 Cs0.05 Pb(I0.9 Br0.1 )3 -based X-ray flat-panel detector with low trap density and large mobility-lifetime product (7.5 × 10-3 cm2 V-1 ) is reported. The assembled panel detector exhibits close-to-single-crystal performance (high sensitivity of 2.1 × 104 µC Gyair -1 cm-2 and ultralow detection limit of 1.25 nGyair s-1 ), high spatial resolution of 0.46 lp/pixel, as well as excellent thermal robustness under industrial standards. The high performance in the high-entropy perovskite-based X-ray FPDs has the potential to facilitate the development of new-generation X-ray-detection systems 
650 4 |a Journal Article 
650 4 |a X-ray flat-panel detectors 
650 4 |a high-entropy perovskites 
650 4 |a mechanochemistry 
700 1 |a Chen, Xu  |e verfasserin  |4 aut 
700 1 |a Song, Zihao  |e verfasserin  |4 aut 
700 1 |a Zhang, Ao  |e verfasserin  |4 aut 
700 1 |a Du, Xinyuan  |e verfasserin  |4 aut 
700 1 |a He, Xin  |e verfasserin  |4 aut 
700 1 |a Wang, Hanqi  |e verfasserin  |4 aut 
700 1 |a Xu, Ling  |e verfasserin  |4 aut 
700 1 |a Zheng, Zhiping  |e verfasserin  |4 aut 
700 1 |a Niu, Guangda  |e verfasserin  |4 aut 
700 1 |a Tang, Jiang  |e verfasserin  |4 aut 
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773 1 8 |g volume:35  |g year:2023  |g number:29  |g day:18  |g month:07  |g pages:e2301406 
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