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Non-Fully Conjugate...
Non-Fully Conjugated Dimerized Giant Acceptors with Different Alkyl-Linked Sites for Stable and 19.13 % Efficiency Organic Solar Cells
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- Yi, Fan (author)
- Xiangtan Univ, Peoples R China; Xi An Jiao Tong Univ, Peoples R China
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- Xiao, Manjun (author)
- Xiangtan Univ, Peoples R China
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- Meng, Yongdie (author)
- Xiangtan Univ, Peoples R China
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- Bai, Hairui (author)
- Xi An Jiao Tong Univ, Peoples R China
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- Su, Wenyan (author)
- Xian Univ Sci & Technol, Peoples R China
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- Gao, Wei (author)
- Huaqiao Univ, Peoples R China
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- Yao, Ze-Fan (author)
- Peking Univ, Peoples R China
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Qi, Guangyu (author)
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- Liang, Zezhou (author)
- Xi An Jiao Tong Univ, Peoples R China
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- Jin, Conggui (author)
- Xiangtan Univ, Peoples R China
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- Tang, Lingxiao (author)
- Xi An Jiao Tong Univ, Peoples R China
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- Zhang, Rui (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Yan, Lihe (author)
- Xi An Jiao Tong Univ, Peoples R China
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- Liu, Yuhang (author)
- Xi An Jiao Tong Univ, Peoples R China
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- Zhu, Weiguo (author)
- Changzhou Univ, Peoples R China
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- Ma, Wei (author)
- Xi An Jiao Tong Univ, Peoples R China
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- Fan, Qunping (author)
- Xi An Jiao Tong Univ, Peoples R China
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(creator_code:org_t)
- 2024
- 2024
- English.
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In: Angewandte Chemie International Edition. - : WILEY-V C H VERLAG GMBH. - 1433-7851 .- 1521-3773.
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Achieving both high power conversion efficiency (PCE) and device stability is a major challenge for the practical development of organic solar cells (OSCs). Herein, three non-fully conjugated dimerized giant acceptors (named 2Y-sites, including wing-site-linked 2Y-wing, core-site-linked 2Y-core, and end-site-linked 2Y-end) are developed. They share the similar monomer precursors but have different alkyl-linked sites, offering the fine-tuned molecular absorption, packing, glass transition temperature, and carrier mobility. Among their binary active layers, D18/2Y-wing has better miscibility, leading to optimized morphology and more efficient charge transfer compared to D18/2Y-core and D18/2Y-end. Therefore, the D18/2Y-wing-based OSCs achieve a superior PCE of 17.73 %, attributed to enhanced photocurrent and fill factor. Furthermore, the D18/2Y-wing-based OSCs exhibit a balance of high PCE and improved stability, distinguishing them within the 2Y-sites. Building on the success of 2Y-wing in binary systems, we extend its application to ternary OSCs by pairing it with the near-infrared absorbing D18/BS3TSe-4F host. Thanks to the complementary absorption within 300-970 nm and further optimized morphology, ternary OSCs obtain a higher PCE of 19.13 %, setting a new efficiency benchmark for the dimer-derived OSCs. This approach of alkyl-linked site engineering for constructing dimerized giant acceptors presents a promising pathway to improve both PCE and stability of OSCs. Three new non-fully conjugated dimerized giant acceptors with different alkyl-linked sites are developed. Among them, wing-sited 2Y-wing has fine-tuned packing and better miscibility with donor, allowing to 19.13 % efficiency (which is the highest value among the devices with giant acceptors) and highly stable organic solar cells. image
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinsk bioteknologi -- Medicinsk bioteknologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Medical Biotechnology -- Medical Biotechnology (hsv//eng)
Keyword
- giant acceptors; organic solar cells; morphology; molecular engineering; power conversion efficiency
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Yi, Fan
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Xiao, Manjun
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Meng, Yongdie
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Bai, Hairui
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Su, Wenyan
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Gao, Wei
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Yao, Ze-Fan
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Qi, Guangyu
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Liang, Zezhou
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Jin, Conggui
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Tang, Lingxiao
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Zhang, Rui
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Yan, Lihe
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Liu, Yuhang
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Zhu, Weiguo
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Ma, Wei
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Fan, Qunping
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- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Medical Biotechn ...
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and Medical Biotechn ...
- Articles in the publication
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Angewandte Chemi ...
- By the university
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Linköping University