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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202210186
|2 doi
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|a pubmed24n1182.xml
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|a (DE-627)NLM354664956
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|a (NLM)36961356
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|a DE-627
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|a eng
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|a Ge, Yansong
|e verfasserin
|4 aut
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|a Intermediate Phase Engineering with 2,2-Azodi(2-Methylbutyronitrile) for Efficient and Stable Perovskite Solar Cells
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|c 2023
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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 Completed 08.06.2023
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|a Date Revised 08.06.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 Wiley-VCH GmbH.
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|a Sequential deposition has been widely employed to modulate the crystallization of perovskite solar cells because it can avoid the formation of nucleation centers and even initial crystallization in the precursor solution. However, challenges remain in overcoming the incomplete and random transformation of PbI2 films with organic ammonium salts. Herein, a unique intermediate phase engineering strategy has been developed by simultaneously introducing 2,2-azodi(2-methylbutyronitrile) (AMBN) to both PbI2 and ammonium salt solutions to regulate perovskite crystallization. AMBN not only coordinates with PbI2 to form a favorably mesoporous PbI2 film due to the coordination between Pb2+ and the cyano group (C≡N), but also suppresses the vigorous activity of FA+ ions by interacting with FAI, leading to the full PbI2 transformation with the preferred orientation. Therefore, perovskites with favorable facet orientations are obtained, and the defects are largely suppressed owing to the passivation of uncoordinated Pb2+ and FA+ . As a result, a champion power conversion efficiency over 25% with a stabilized efficiency of 24.8% is achieved. Moreover, the device exhibits an improved operational stability, retaining 96% of initial power conversion efficiency under 1000 h continuous white-light illumination with an intensity of 100 mW cm-2 at ≈55 °C in N2 atmosphere
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|a Journal Article
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|a 2,2-azodi(2-methylbutyronitrile)
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|a intermediate phase engineering
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|a perovskite solar cells
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|a phase transformation
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|a sequential deposition
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|a Wang, Haibing
|e verfasserin
|4 aut
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|a Wang, Cheng
|e verfasserin
|4 aut
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|a Wang, Chen
|e verfasserin
|4 aut
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|a Guan, Hongling
|e verfasserin
|4 aut
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|a Shao, Wenlong
|e verfasserin
|4 aut
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|a Wang, Ti
|e verfasserin
|4 aut
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|a Ke, Weijun
|e verfasserin
|4 aut
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|a Tao, Chen
|e verfasserin
|4 aut
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|a Fang, Guojia
|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 35(2023), 23 vom: 05. Juni, Seite e2210186
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:35
|g year:2023
|g number:23
|g day:05
|g month:06
|g pages:e2210186
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|u http://dx.doi.org/10.1002/adma.202210186
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