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Fluorinated End Gro...
Fluorinated End Group Enables High-Performance All-Polymer Solar Cells with Near-Infrared Absorption and Enhanced Device Efficiency over 14%
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- Yu, Han (author)
- Wuhan Univ, Peoples R China; Hong Kong Univ Sci & Technol, Peoples R China
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- Qi, Zhenyu (author)
- Hong Kong Univ Sci & Technol, Peoples R China; Hong Kong Univ Sci & Technol, Peoples R China
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- Yu, Jianwei (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Xiao, Yiqun (author)
- Chinese Univ Hong Kong, Peoples R China
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- Sun, Rui (author)
- Wuhan Univ, Peoples R China
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- Luo, Zhenghui (author)
- Hong Kong Univ Sci & Technol, Peoples R China
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- Cheung, Andy Man Hong (author)
- Hong Kong Univ Sci & Technol, Peoples R China
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- Zhang, Jianquan (author)
- Hong Kong Univ Sci & Technol, Peoples R China
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- Sun, Huiliang (author)
- Southern Univ Sci & Technol SUSTech, Peoples R China
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- Zhou, Wentao (author)
- Hong Kong Univ Sci & Technol, Peoples R China
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- Chen, Shangshang (author)
- Hong Kong Univ Sci & Technol, Peoples R China
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- Guo, Xugang (author)
- Southern Univ Sci & Technol SUSTech, Peoples R China
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- Lu, Xinhui (author)
- Chinese Univ Hong Kong, Peoples R China
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- Gao, Feng (author)
- Linköpings universitet,Elektroniska och fotoniska material,Tekniska fakulteten
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- Min, Jie (author)
- Wuhan Univ, Peoples R China
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- Yan, He (author)
- Hong Kong Univ Sci & Technol Shenzhen, Peoples R China; South China Univ Technol, Peoples R China
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(creator_code:org_t)
- 2020-12-13
- 2021
- English.
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In: Advanced Energy Materials. - : WILEY-V C H VERLAG GMBH. - 1614-6832 .- 1614-6840. ; 11:4
- 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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- Fluorination of end groups has been a great success in developing efficient small molecule acceptors. However, this strategy has not been applied to the development of polymer acceptors. Here, a dihalogenated end group modified by fluorine and bromine atoms simultaneously, namely IC-FBr, is first developed, then employed to construct a new polymer acceptor (named PYF-T) for all-polymer solar cells (all-PSCs). In comparison with its non-fluorinated counterpart (PY-T), PYF-T exhibits stronger and red-shifted absorption spectra, stronger molecular packing and higher electron mobility. Meanwhile, the fluorination on the end groups down-shifts the energy levels of PYF-T, which matches better with the donor polymer PM6, leading to efficient charge transfer and small voltage loss. As a result, an all-PSC based on PM6:PYF-T yields a higher power conversion efficiency (PCE) of 14.1% than that of PM6:PY-T (11.1%), which is among the highest values for all-PSCs reported to date. This work demonstrates the effectiveness of fluorination of end-groups in designing high-performance polymer acceptors, which paves the way toward developing more efficient and stable all-PSCs.
Subject headings
- NATURVETENSKAP -- Kemi -- Annan kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Other Chemistry Topics (hsv//eng)
Keyword
- all‐ polymer solar cells; fluorinated end groups; polymer acceptors; polymers; solar cells
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database
- By the author/editor
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Yu, Han
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Qi, Zhenyu
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Yu, Jianwei
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Xiao, Yiqun
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Sun, Rui
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Luo, Zhenghui
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show more...
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Cheung, Andy Man ...
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Zhang, Jianquan
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Sun, Huiliang
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Zhou, Wentao
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Chen, Shangshang
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Guo, Xugang
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Lu, Xinhui
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Gao, Feng
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Min, Jie
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Yan, He
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show less...
- 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 Other Chemistry ...
- Articles in the publication
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Advanced Energy ...
- By the university
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Linköping University