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241204s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202415627
|2 doi
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|a pubmed25n1269.xml
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|a (DE-627)NLM381010627
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|a (NLM)39614751
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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 Yang, Ming
|e verfasserin
|4 aut
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|a Sn-Pb Perovskite with Strong Light and Oxygen Stability for All-Perovskite Tandem Solar Cells
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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 30.11.2024
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|a published: Print-Electronic
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|a Citation Status Publisher
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|a © 2024 Wiley‐VCH GmbH.
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|a Research on mixed Sn-Pb perovskite solar cells (PSCs) is gaining significant attention due to their potential for high efficiency in all-perovskite tandem solar cells. However, Sn2+ in Sn-Pb perovskite is susceptible to oxidation, leading to a high defect density. The oxidation primarily occurs through two pathways: one involving a reaction with oxygen, and the other related to iodine defects, which generate I2 and further accelerate the oxidation of Sn2⁺, greatly reducing stability. First, to tackle the photo-stability issues caused by iodine defects, amber acid (AA) is screened as the additive. The Carboxyl group on AA can strongly coordinate with Sn2+, reinforcing the Sn─I bond and electrostatically interacting with negatively charged defects. This interaction inhibits the photoinduced formation of I2 and the subsequent oxidation of Sn2+, thereby enhancing the stability of Sn─Pb PSCs under continuous illumination. Building on the foundation of AA, a reductive sulfhydryl group is introduced to synthesize thiomalic acid (TA). It inhibits the formation of Sn4+ in both the perovskite precursor and the perovskite film, thereby improving air stability while maintaining strong photostability. Consequently, single PSCs achieved a champion efficiency of 22.7%. The best-performing two-terminal all-perovskite tandem solar cell achieved a power conversion efficiency of 28.6% with improved operational stability
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|a Journal Article
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|a all‐perovskite tandem solar cells
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|a halide migration
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|a iodine reduction
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|a narrow bandgap perovskite
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|a operational stability
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|a Bai, Yang
|e verfasserin
|4 aut
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|a Meng, Yuanyuan
|e verfasserin
|4 aut
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|a Tian, Ruijia
|e verfasserin
|4 aut
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|a Sun, Kexuan
|e verfasserin
|4 aut
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|a Lu, Xiaoyi
|e verfasserin
|4 aut
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|a Pan, Haibin
|e verfasserin
|4 aut
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|a Wang, Jingnan
|e verfasserin
|4 aut
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|a Zhou, Shujing
|e verfasserin
|4 aut
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|a Zhang, Jing
|e verfasserin
|4 aut
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|a Song, Zhenhua
|e verfasserin
|4 aut
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|a Wang, Yaohua
|e verfasserin
|4 aut
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|a Liu, Chang
|e verfasserin
|4 aut
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| 700 |
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|a Ge, Ziyi
|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 (2024) vom: 30. Nov., Seite e2415627
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
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|g year:2024
|g day:30
|g month:11
|g pages:e2415627
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|u http://dx.doi.org/10.1002/adma.202415627
|3 Volltext
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