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240229s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202313663
|2 doi
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|a pubmed24n1432.xml
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|a (DE-627)NLM369057791
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|a (NLM)38415854
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|a DE-627
|b ger
|c DE-627
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|a eng
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|a Xia, Mengling
|e verfasserin
|4 aut
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|a Stereo-Hindrance Engineering of A Cation toward <110>-Oriented 2D Perovskite with Minimized Tilting and High-Performance X-Ray Detection
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Revised 07.06.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a 2D <100>-oriented Dion-Jacobson or Ruddlesden-Popper perovskites are widely recognized as promising candidates for optoelectronic applications. However, the large interlayer spacing significantly hinders the carrier transport. <110>-oriented 2D perovskites naturally exhibit reduced interlayer spacings, but the tilting of metal halide octahedra is typically serious and leads to poor charge transport. Herein, a <110>-oriented 2D perovskite EPZPbBr4 (EPZ = 1-ethylpiperazine) with minimized tilting is designed through A-site stereo-hindrance engineering. The piperazine functional group enters the space enclosed by the three [PbBr6]4- octahedra, pushing Pb─Br─Pb closer to a straight line (maximum Pb─Br─Pb angle ≈180°), suppressing the tilting as well as electron-phonon coupling. Meanwhile, the ethyl group is located between layers and contributes an extremely reduced effective interlayer distance (2.22 Å), further facilitating the carrier transport. As a result, EPZPbBr4 simultaneously demonstrates high µτ product (1.8 × 10-3 cm2 V-1) and large resistivity (2.17 × 1010 Ω cm). The assembled X-ray detector achieves low dark current of 1.02 × 10-10 A cm-2 and high sensitivity of 1240 µC Gy-1 cm-2 under the same bias voltage. The realized specific detectivity (ratio of sensitivity to noise current density, 1.23 × 108 µC Gy-1 cm-1 A-1/2) is the highest among all reported perovskite X-ray detectors
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|a Journal Article
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|a 2D perovskite
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|a <110>‐oriented
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|a X‐ray detector
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|a high sensitivity
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|a stereo‐hindrance engineering
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|a Sun, Xijuan
|e verfasserin
|4 aut
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|a Ye, Fan
|e verfasserin
|4 aut
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| 700 |
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|a Liao, Mingquan
|e verfasserin
|4 aut
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|a Liu, Jiaqi
|e verfasserin
|4 aut
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| 700 |
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|a Liu, Shiyou
|e verfasserin
|4 aut
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| 700 |
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|a Wu, Dong
|e verfasserin
|4 aut
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| 700 |
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|a Xu, Yinsheng
|e verfasserin
|4 aut
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|a Zhang, Xianghua
|e verfasserin
|4 aut
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|a Xue, Kan-Hao
|e verfasserin
|4 aut
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|a Miao, Xiangshui
|e verfasserin
|4 aut
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|a Tang, Jiang
|e verfasserin
|4 aut
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| 700 |
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|a Niu, Guangda
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 36(2024), 23 vom: 27. Juni, Seite e2313663
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:36
|g year:2024
|g number:23
|g day:27
|g month:06
|g pages:e2313663
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|u http://dx.doi.org/10.1002/adma.202313663
|3 Volltext
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