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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202207362
|2 doi
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|a pubmed24n1159.xml
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|a (DE-627)NLM347836313
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|a (NLM)36268995
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|a DE-627
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|a eng
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|a Du, Xinyi
|e verfasserin
|4 aut
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|a Spontaneous Interface Healing by a Dynamic Liquid-Crystal Transition for High-Performance Perovskite Solar Cells
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|c 2022
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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 09.12.2022
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|a Date Revised 09.12.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2022 Wiley-VCH GmbH.
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|a Low-temperature solution processing of thin-film semiconductors is more cost-effective than traditional vacuum processing; however, it leads to more defects during fast bulk crystallization and residual tensile stress. Herein, a new strategy of dynamic liquid-crystal transition (DLCT) is developed to solve these problems in one step. The design principle is used to suggest that the DLCT molecule should firstly interact with the perovskite grains in the bulk and meanwhile go through a dynamic transition to spontaneously heal the interface. A thermotropic LC molecule (CBO6SS6OCB) is then designed to demonstrate the strategy. The LC interacting with perovskite colloid forms an intermediate adduct to retard the crystallization. The annealing processes stimulate the concentrated LC solid, causing it to flow to the electron transport layer to release the residual stress to attain improved electron extraction. Consequently, the device efficiency is increased to 24.38%, where its VOC of 1.184 V is among the best for the formamidine-based perovskite solar cells. Furthermore, the ambient stability (93.0% of initial efficiency after 2000 h of aging) and light stability (96.3% of initial efficiency after 500 h of aging) are much improved. This work conceives a new engineering of additive phase transition for high-performance perovskite solar cells
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|a Journal Article
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|a crystallization retardation
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|a dynamic liquid-crystal transitions
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|a high efficiency and stability
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|a interfacial healing
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|a perovskite solar cells
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|a Zhang, Lu
|e verfasserin
|4 aut
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|a Chen, Ran
|e verfasserin
|4 aut
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|a You, Jiaxue
|e verfasserin
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|a Ma, Yabin
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|a Wang, Jungang
|e verfasserin
|4 aut
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|a Wu, Yin
|e verfasserin
|4 aut
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|a Liu, Baibai
|e verfasserin
|4 aut
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|a Zhao, Kui
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|4 aut
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|a Chen, Jiangzhao
|e verfasserin
|4 aut
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|a Chen, Xinbing
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|a An, Zhongwei
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|a Liu, Shengzhong Frank
|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 34(2022), 49 vom: 28. Dez., Seite e2207362
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:34
|g year:2022
|g number:49
|g day:28
|g month:12
|g pages:e2207362
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|u http://dx.doi.org/10.1002/adma.202207362
|3 Volltext
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