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Fluorinated Perylen...
Fluorinated Perylene-Diimides: Cathode Interlayers Facilitating Carrier Collection for High-Performance Organic Solar Cells
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- Yao, Jia (author)
- Beijing Univ Chem Technol, Peoples R China; Chinese Acad Sci, Peoples R China
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- Ding, Shiyu (author)
- Beijing Univ Chem Technol, Peoples R China
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- Zhang, Rui (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Bai, Yang (author)
- Beijing Univ Chem Technol, Peoples R China
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- Zhou, Qiuju (author)
- Xinyang Normal Univ, Peoples R China
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- Meng, Lei (author)
- Chinese Acad Sci, Peoples R China
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- Solano, Eduardo (author)
- ALBA Synchrotron Light Source, Spain
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- Steele, Julian A. (author)
- Katholieke Univ Leuven, Belgium; Univ Queensland, Australia
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- Roeffaers, Maarten B. J. (author)
- Katholieke Univ Leuven, Belgium
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- Gao, Feng (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Zhang, Zhi-Guo (author)
- Beijing Univ Chem Technol, Peoples R China
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- Li, Yongfang (author)
- Chinese Acad Sci, Peoples R China
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(creator_code:org_t)
- 2022-07-13
- 2022
- English.
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In: Advanced Materials. - : WILEY-V C H VERLAG GMBH. - 0935-9648 .- 1521-4095. ; 34:32
- 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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- Organic solar cells (OSCs) have experienced rapid progress with the innovation of near-infrared (NIR)-absorbing small-molecular acceptors (SMAs), while the unique electronic properties of the SMAs raise new challenges in relation to cathode engineering for effective electron collection. To address this issue, two fluorinated perylene-diimides (PDIs), PDINN-F and PDINN-2F, are synthesized by a simple fluorination method, for application as cathode interlayer (CIL) materials. The two bay-fluorinated PDI-based CILs possess a lower lowest unoccupied molecular orbital (LUMO) energy level of approximate to-4.0 eV, which improves the energy level alignment at the NIR-SMAs (such as BTP-eC9)/CIL for a favorable electron extraction efficiency. The monofluorinated PDINN-F shows higher electron mobility and better improved interfacial compatibility. The PDINN-F-based OSCs with PM6:BTP-eC9 as active layer exhibit an enhanced fill factor and larger short-circuit current density, leading to a high power conversion efficiency (PCE) exceeding 18%. The devices with PDINN-F CIL retain more than 80% of their initial PCE after operating at the maximum power point under continuous illumination for 750 h. This work prescribes a facile, cost-effective, and scalable method for the preparation of stable, high-performance fluorinated CILs, and instilling promise for the NIR-SMAs-based OSCs moving forward.
Subject headings
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- cost-effective and scalable methods; fluorinated perylene-diimides; fluorination; high device performance
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Yao, Jia
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Ding, Shiyu
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Zhang, Rui
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Bai, Yang
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Zhou, Qiuju
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Meng, Lei
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show more...
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Solano, Eduardo
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Steele, Julian A ...
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Roeffaers, Maart ...
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Gao, Feng
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Zhang, Zhi-Guo
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Li, Yongfang
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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Advanced Materia ...
- By the university
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Linköping University