Lattice-Gradient Perovskite KTaO3 Films for an Ultrastable and Low-Dose X-Ray Detector

Lattice-Gradient Perovskite KTaO3 Films for an Ultrastable and Low-Dose X-Ray Detector

© 2023 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 47 vom: 01. Nov., Seite e2211026
1. Verfasser: Li, Liqi (VerfasserIn)
Weitere Verfasser: Fang, Xuchao, Zhang, Zijun, Yang, Qian, Wang, Fei, Li, Menglu, Zhu, Ruixue, Wang, Lixiang, Zhu, Yihan, Miao, Xiaohe, Lu, Yangfan, Shi, Junhui, Wu, Yongjun, Liu, Gang, Fang, Yanjun, Tian, He, Ren, Zhaohui, Yang, Deren, Han, Gaorong
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article KTaO3 film X-ray detectors lattice gradient solution epitaxy ultra-stability
LEADER 01000naa a22002652 4500
001 NLM362898995
003 DE-627
005 20231226092214.0
007 cr uuu---uuuuu
008 231226s2023 xx |||||o 00| ||eng c
024 7 |a 10.1002/adma.202211026  |2 doi 
028 5 2 |a pubmed24n1209.xml 
035 |a (DE-627)NLM362898995 
035 |a (NLM)37796177 
040 |a DE-627  |b ger  |c DE-627  |e rakwb 
041 |a eng 
100 1 |a Li, Liqi  |e verfasserin  |4 aut 
245 1 0 |a Lattice-Gradient Perovskite KTaO3 Films for an Ultrastable and Low-Dose X-Ray Detector 
264 1 |c 2023 
336 |a Text  |b txt  |2 rdacontent 
337 |a ƒaComputermedien  |b c  |2 rdamedia 
338 |a ƒa Online-Ressource  |b cr  |2 rdacarrier 
500 |a Date Revised 24.11.2023 
500 |a published: Print-Electronic 
500 |a Citation Status PubMed-not-MEDLINE 
520 |a © 2023 Wiley-VCH GmbH. 
520 |a Conventional indirect X-ray detectors employ scintillating phosphors to convert X-ray photons into photodiode-detectable visible photons, leading to low conversion efficiencies, low spatial resolutions, and optical crosstalk. Consequently, X-ray detectors that directly convert photons into electric signals have long been desired for high-performance medical imaging and industrial inspection. Although emerging hybrid inorganic-organic halide perovskites, such as CH3 NH3 PbI3 and CH3 NH3 PbBr3 , exhibit high sensitivity, they have salient drawbacks including structural instability, ion motion, and the use of toxic Pb. Here, this work reports an ultrastable, low-dose X-ray detector comprising KTaO3 perovskite films epitaxially grown on a Nb-doped strontium titanate substrate using a low-cost solution method. The detector exhibits a stable photocurrent under high-dose irradiation, high-temperature (200 °C), and aqueous conditions. Moreover, the prototype KTaO3 -film-based detector exhibits a 150-fold higher sensitivity (3150 µC Gyair -1 cm-2 ) and 150-fold lower detection limit (<40 nGyair s-1 ) than those of commercial α-Se-based direct detectors. Systematic investigations reveal that the high stability of the detector originates from the strong covalent bonds within the KTaO3 film, whereas the low detection limit is due to a lattice-gradient-driven built-in electric field and the high insulating property of KTaO3 film. This study unveils a new path toward the fabrication of green, stable, and low-dose X-ray detectors using oxide perovskite films, which have significant application potential in medical imaging and security operations 
650 4 |a Journal Article 
650 4 |a KTaO3 film 
650 4 |a X-ray detectors 
650 4 |a lattice gradient 
650 4 |a solution epitaxy 
650 4 |a ultra-stability 
700 1 |a Fang, Xuchao  |e verfasserin  |4 aut 
700 1 |a Zhang, Zijun  |e verfasserin  |4 aut 
700 1 |a Yang, Qian  |e verfasserin  |4 aut 
700 1 |a Wang, Fei  |e verfasserin  |4 aut 
700 1 |a Li, Menglu  |e verfasserin  |4 aut 
700 1 |a Zhu, Ruixue  |e verfasserin  |4 aut 
700 1 |a Wang, Lixiang  |e verfasserin  |4 aut 
700 1 |a Zhu, Yihan  |e verfasserin  |4 aut 
700 1 |a Miao, Xiaohe  |e verfasserin  |4 aut 
700 1 |a Lu, Yangfan  |e verfasserin  |4 aut 
700 1 |a Shi, Junhui  |e verfasserin  |4 aut 
700 1 |a Wu, Yongjun  |e verfasserin  |4 aut 
700 1 |a Liu, Gang  |e verfasserin  |4 aut 
700 1 |a Fang, Yanjun  |e verfasserin  |4 aut 
700 1 |a Tian, He  |e verfasserin  |4 aut 
700 1 |a Ren, Zhaohui  |e verfasserin  |4 aut 
700 1 |a Yang, Deren  |e verfasserin  |4 aut 
700 1 |a Han, Gaorong  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Advanced materials (Deerfield Beach, Fla.)  |d 1998  |g 35(2023), 47 vom: 01. Nov., Seite e2211026  |w (DE-627)NLM098206397  |x 1521-4095  |7 nnns 
773 1 8 |g volume:35  |g year:2023  |g number:47  |g day:01  |g month:11  |g pages:e2211026 
856 4 0 |u http://dx.doi.org/10.1002/adma.202211026  |3 Volltext 
912 |a GBV_USEFLAG_A 
912 |a SYSFLAG_A 
912 |a GBV_NLM 
912 |a GBV_ILN_350 
951 |a AR 
952 |d 35  |j 2023  |e 47  |b 01  |c 11  |h e2211026