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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202101714
|2 doi
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|a eng
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|a Min, Liangliang
|e verfasserin
|4 aut
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|a 2D Ruddlesden-Popper Perovskite with Ordered Phase Distribution for High-Performance Self-Powered Photodetectors
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|c 2021
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 02.09.2021
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2021 Wiley-VCH GmbH.
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|a 2D Ruddlesden-Popper perovskites exhibit great potential in optoelectronic devices for superior stability compared with their 3D counterparts. However, to achieve a high level of device performance, it is crucial but challenging to regulate the phase distribution of 2D perovskites to facilitate charge carrier transfer. Herein, using a solvent additive method (adding a small amount of dimethyl sulfoxide (DMSO) in N,N-dimethylformamide (DMF)) combined with a hot-casting process, the phase distribution of (PEA)2 MA3 Pb4 I13 (PEA+ = C6 H5 CH2 CH2 NH3 + , MA+ = CH3 NH3 + ) perovskite can be well controlled and the Fermi level of perovskites along the film thickness direction can achieve gradient distribution. The increased built-in potential, oriented crystal, and improved crystal quality jointly contribute to the high photoresponse of devices in the entire response spectrum range. The optimum device exhibits a characteristic detection peak at 570 nm with large responsivity/detectivity (0.44 A W-1 /3.38 × 1012 Jones), ultrafast response speed with a rise/fall time of 20.8/20.6 µs, and improved stability. This work suggests the possibility of manipulating the ordered phase distribution of 2D perovskites toward high-performance and stable optoelectronic conversion devices
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|a Journal Article
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|a 2D perovskites
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|a phase distribution
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|a self-powered photodetector
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1 |
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|a Tian, Wei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cao, Fengren
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Guo, Jun
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Li, Liang
|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 33(2021), 35 vom: 10. Sept., Seite e2101714
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
1 |
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|g volume:33
|g year:2021
|g number:35
|g day:10
|g month:09
|g pages:e2101714
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|u http://dx.doi.org/10.1002/adma.202101714
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