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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202305314
|2 doi
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|a pubmed24n1204.xml
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|a (DE-627)NLM361499744
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|a (NLM)37652150
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Wang, Shiqiang
|e verfasserin
|4 aut
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| 245 |
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|a In Situ Self-Elimination of Defects via Controlled Perovskite Crystallization Dynamics for High-Performance Solar Cells
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|c 2023
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|a Text
|b txt
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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 20.10.2023
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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 Understanding and controlling crystallization is crucial for high-quality perovskite films and efficient solar cells. Herein, the issue of defects in formamidinium lead iodide (FAPbI3 ) formation is addressed, focusing on the role of intermediates. A comprehensive picture of structural and carrier evolution during crystallization is demonstrated using in situ grazing-incidence wide-angle X-ray scattering, ultraviolet-visible spectroscopy and photoluminescence spectroscopy. Three crystallization stages are identified: precursors to the δ-FAPbI3 intermediate, then to α-FAPbI3 , where defects spontaneously emerge. A hydrogen-sulfate-based ionic liquid additive is found to enable the phase-conversion pathway of precursors → solvated intermediates → α-FAPbI3 , during which the spontaneous generation of δ-FAPbI3 can be effectively circumvented. This additive extends the initial growth kinetics and facilitates solvent-FA+ ion exchange, which results in the self-elimination of defects during crystallization. Therefore, the improved crystallization dynamics lead to larger grain sizes and fewer defects within thin films. Ultimately, the improved perovskite crystallization dynamics enable high-performance solar cells, achieving impressive efficiencies of 25.14% at 300 K and 26.12% at 240 K. This breakthrough might open up a new era of application for the emerging perovskite photovoltaic technology to low-temperature environments such as near-space and polar regions
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|a Journal Article
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|a defects
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|a high efficiency
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|a in situ crystallization dynamics
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|a perovskite solar cells
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|a phase transitions
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|a Yang, Tinghuan
|e verfasserin
|4 aut
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|a Yang, Yingguo
|e verfasserin
|4 aut
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|a Du, Yachao
|e verfasserin
|4 aut
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|a Huang, Wenliang
|e verfasserin
|4 aut
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|a Cheng, Liwei
|e verfasserin
|4 aut
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1 |
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|a Li, Haojin
|e verfasserin
|4 aut
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|a Wang, Peijun
|e verfasserin
|4 aut
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|a Wang, Yajie
|e verfasserin
|4 aut
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|a Zhang, Yi
|e verfasserin
|4 aut
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|a Ma, Chuang
|e verfasserin
|4 aut
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1 |
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|a Liu, Pengchi
|e verfasserin
|4 aut
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|a Zhao, Guangtao
|e verfasserin
|4 aut
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|a Ding, Zicheng
|e verfasserin
|4 aut
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|a Liu, Shengzhong Frank
|e verfasserin
|4 aut
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| 700 |
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|a Zhao, Kui
|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), 42 vom: 31. Okt., Seite e2305314
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:35
|g year:2023
|g number:42
|g day:31
|g month:10
|g pages:e2305314
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|u http://dx.doi.org/10.1002/adma.202305314
|3 Volltext
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