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Single-Junction Org...
Single-Junction Organic Photovoltaic Cells with Approaching 18% Efficiency
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- Cui, Yong (författare)
- Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
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- Yao, Huifeng (författare)
- Chinese Acad Sci, Peoples R China
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- Zhang, Jianqi (författare)
- Natl Ctr Nanosci and Technol, Peoples R China
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- Xian, Kaihu (författare)
- Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
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- Zhang, Tao (författare)
- Chinese Acad Sci, Peoples R China
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- Hong, Ling (författare)
- Univ Chinese Acad Sci, Peoples R China
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- Wang, Yuming (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten,Chinese Acad Sci, Peoples R China
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- Xu, Ye (författare)
- Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
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- Ma, Kangqiao (författare)
- Chinese Acad Sci, Peoples R China
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- An, Cunbin (författare)
- Chinese Acad Sci, Peoples R China
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- He, Chang (författare)
- Chinese Acad Sci, Peoples R China
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- Wei, Zhixiang (författare)
- Univ Chinese Acad Sci, Peoples R China; Natl Ctr Nanosci and Technol, Peoples R China
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- Gao, Feng (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Hou, Jianhui (författare)
- Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
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(creator_code:org_t)
- 2020-03-29
- 2020
- Engelska.
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Ingår i: Advanced Materials. - : WILEY-V C H VERLAG GMBH. - 0935-9648 .- 1521-4095. ; 32:19
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Optimizing the molecular structures of organic photovoltaic (OPV) materials is one of the most effective methods to boost power conversion efficiencies (PCEs). For an excellent molecular system with a certain conjugated skeleton, fine tuning the alky chains is of considerable significance to fully explore its photovoltaic potential. In this work, the optimization of alkyl chains is performed on a chlorinated nonfullerene acceptor (NFA) named BTP-4Cl-BO (a Y6 derivative) and very impressive photovoltaic parameters in OPV cells are obtained. To get more ordered intermolecular packing, the n-undecyl is shortened at the edge of BTP-eC11 to n-nonyl and n-heptyl. As a result, the NFAs of BTP-eC9 and BTP-eC7 are synthesized. The BTP-eC7 shows relatively poor solubility and thus limits its application in device fabrication. Fortunately, the BTP-eC9 possesses good solubility and, at the same time, enhanced electron transport property than BTP-eC11. Significantly, due to the simultaneously enhanced short-circuit current density and fill factor, the BTP-eC9-based single-junction OPV cells record a maximum PCE of 17.8% and get a certified value of 17.3%. These results demonstrate that minimizing the alkyl chains to get suitable solubility and enhanced intermolecular packing has a great potential in further improving its photovoltaic performance.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- molecular modification; nonfullerene acceptors; organic photovoltaic cells; power conversion efficiency
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Cui, Yong
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Yao, Huifeng
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Zhang, Jianqi
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Xian, Kaihu
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Zhang, Tao
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Hong, Ling
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Wang, Yuming
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Xu, Ye
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Ma, Kangqiao
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An, Cunbin
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He, Chang
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Wei, Zhixiang
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Gao, Feng
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Hou, Jianhui
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