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Critical role of ad...
Critical role of additive-induced molecular interaction on the operational stability of perovskite light-emitting diodes
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- Kuang, Chaoyang (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Hu, Zhang-Jun (author)
- Linköpings universitet,Molekylär ytfysik och nanovetenskap,Tekniska fakulteten
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- Yuan, Zhongcheng (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Wen, Kaichuan (author)
- Nanjing Tech Univ, Peoples R China; Nanjing Tech Univ, Peoples R China
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- Qing, Jian (author)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten,Jinan Univ, Peoples R China
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- Kobera, Libor (author)
- Czech Acad Sci, Czech Republic
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- Abbrent, Sabina (author)
- Czech Acad Sci, Czech Republic
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- Brus, Jiri (author)
- Czech Acad Sci, Czech Republic
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- Yin, Chunyang (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Wang, Heyong (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Xu, Weidong (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Wang, Jianpu (author)
- Nanjing Tech Univ, Peoples R China; Nanjing Tech Univ, Peoples R China
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- Bai, Sai (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Gao, Feng (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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(creator_code:org_t)
- Cell Press, 2021
- 2021
- English.
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In: Joule. - : Cell Press. - 2542-4351. ; 5:3, s. 618-630
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https://liu.diva-por... (primary) (Raw object)
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http://www.cell.com/...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Despite rapid improvements in efficiency and brightness of perovskite light-emitting diodes (PeLEDs), the poor operational stability remains a critical challenge hindering their practical applications. Here, we demonstrate greatly improved operational stability of high-efficiency PeLEDs, enabled by incorporating dicarboxylic acids into the precursor for perovskite depositions. We reveal that the dicarboxylic acids efficiently eliminate reactive organic ingredients in perovskite emissive layers through an in situ amidation process, which is catalyzed by the alkaline zinc oxide substrate. The formed stable amides prohibit detrimental reactions between the perovskites and the charge injection layer underneath, stabilizing the perovskites and the interfacial contacts and ensuring the excellent operational stability of the resulting PeLEDs. Through rationally optimizing the amidation reaction in the perovskite emissive layers, we achieve efficient PeLEDs with a peak external quantum efficiency of 18.6% and a long half-life time of 682 h at 20 mA cm(-2), presenting an important breakthrough in PeLEDs.
Subject headings
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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Joule
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To the university's database
- By the author/editor
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Kuang, Chaoyang
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Hu, Zhang-Jun
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Yuan, Zhongcheng
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Wen, Kaichuan
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Qing, Jian
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Kobera, Libor
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Abbrent, Sabina
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Brus, Jiri
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Yin, Chunyang
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Wang, Heyong
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Xu, Weidong
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Wang, Jianpu
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Bai, Sai
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Gao, Feng
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Materials Chemis ...
- Articles in the publication
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Joule
- By the university
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Linköping University