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Unidirectional Side...
Unidirectional Sidechain Engineering to Construct Dual-Asymmetric Acceptors for 19.23 % Efficiency Organic Solar Cells with Low Energy Loss and Efficient Charge Transfer
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- Fan, Qunping (author)
- Xi An Jiao Tong Univ, Peoples R China
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- Ma, Ruijie (author)
- Hong Kong Polytech Univ, Peoples R China
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- Yang, Jie (author)
- Beijing Inst Technol, Peoples R China
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- Gao, Jingshun (author)
- Xi An Jiao Tong Univ, Peoples R China; Zhongyuan Univ Technol, 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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- Liang, Zezhou (author)
- Xi An Jiao Tong Univ, Peoples R China
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- Wu, Yue (author)
- Soochow Univ, Peoples R China
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- Tang, Lingxiao (author)
- Xi An Jiao Tong Univ, Peoples R China
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- Li, Yuxiang (author)
- Xian Univ Sci & Technol, Peoples R China
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- Wu, Qiang (author)
- Xi An Jiao Tong Univ, Peoples R China
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- Wang, Kun (author)
- Zhongyuan Univ Technol, Peoples R China
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- Yan, Lihe (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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- Gao, Feng, 1981- (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Li, Gang (author)
- Hong Kong Polytech Univ, Peoples R China
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- Ma, Wei (author)
- Xi An Jiao Tong Univ, Peoples R China
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(creator_code:org_t)
- WILEY-V C H VERLAG GMBH, 2023
- 2023
- English.
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In: Angewandte Chemie International Edition. - : WILEY-V C H VERLAG GMBH. - 1433-7851 .- 1521-3773. ; 62:36
- 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
Subject headings
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- Achieving both high open-circuit voltage (V-oc) and short-circuit current density (J(sc)) to boost power-conversion efficiency (PCE) is a major challenge for organic solar cells (OSCs), wherein high energy loss (E-loss) and inefficient charge transfer usually take place. Here, three new Y-series acceptors of mono-asymmetric asy-YC11 and dual-asymmetric bi-asy-YC9 and bi-asy-YC12 are developed. They share the same asymmetric D(1)AD(2) (D-1=thieno[3,2-b]thiophene and D-2=selenopheno[3,2-b]thiophene) fused-core but have different unidirectional sidechain on D-1 side, allowing fine-tuned molecular properties, such as intermolecular interaction, packing pattern, and crystallinity. Among the binary blends, the PM6 : bi-asy-YC12 one has better morphology with appropriate phase separation and higher order packing than the PM6 : asy-YC9 and PM6 : bi-asy-YC11 ones. Therefore, the PM6 : bi-asy-YC12-based OSCs offer a higher PCE of 17.16 % with both high V-oc and J(sc), due to the reduced E-loss and efficient charge transfer properties. Inspired by the high V-oc and strong NIR-absorption, bi-asy-YC12 is introduced into efficient binary PM6 : L8-BO to construct ternary OSCs. Thanks to the broadened absorption, optimized morphology, and furtherly minimized E-loss, the PM6 : L8-BO : bi-asy-YC12-based OSCs achieve a champion PCE of 19.23 %, which is one of the highest efficiencies among these annealing-free devices. Our developed unidirectional sidechain engineering for constructing bi-asymmetric Y-series acceptors provides an approach to boost PCE of OSCs.
Subject headings
- NATURVETENSKAP -- Kemi -- Teoretisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Theoretical Chemistry (hsv//eng)
Keyword
- Charge Transfer; Dual-Asymmetric Acceptors; Energy Loss; Organic Solar Cells; Sidechain Engineering
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Fan, Qunping
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Ma, Ruijie
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Yang, Jie
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Gao, Jingshun
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Bai, Hairui
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Su, Wenyan
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show more...
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Liang, Zezhou
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Wu, Yue
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Tang, Lingxiao
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Li, Yuxiang
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Wu, Qiang
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Wang, Kun
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Yan, Lihe
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Zhang, Rui
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Gao, Feng, 1981-
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Li, Gang
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Ma, Wei
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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 Theoretical Chem ...
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Angewandte Chemi ...
- By the university
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Linköping University