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Single-Junction Org...
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Cui, YongChinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
(author)
Single-Junction Organic Photovoltaic Cells with Approaching 18% Efficiency
- Article/chapterEnglish2020
Publisher, publication year, extent ...
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2020-03-29
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WILEY-V C H VERLAG GMBH,2020
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Numbers
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LIBRIS-ID:oai:DiVA.org:liu-165119
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-165119URI
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https://doi.org/10.1002/adma.201908205DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Funding Agencies|National Key Research and Development Program of China - MOST [2019YFA0705900]; Basic and Applied Basic Research Major Program of Guangdong Province [2019B030302007]; NSFCNational Natural Science Foundation of China [21805287, 21734008]; Youth Innovation Promotion Association CAS [2018043]; National Natural Science Foundation of China (NSFC)National Natural Science Foundation of China [21835006, 91633301, 51961135103, 51673201]; China Postdoctoral Science FoundationChina Postdoctoral Science Foundation [2019M660800]; Swedish Research Council VRSwedish Research Council [2018-06048]; Swedish Energy Agency EnergimyndighetenSwedish Energy Agency [2016-010174]; Beijing National Laboratory for Molecular Sciences [BNLMS-CXXM-201903]
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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.
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Yao, HuifengChinese Acad Sci, Peoples R China
(author)
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Zhang, JianqiNatl Ctr Nanosci and Technol, Peoples R China
(author)
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Xian, KaihuChinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
(author)
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Zhang, TaoChinese Acad Sci, Peoples R China
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Hong, LingUniv Chinese Acad Sci, Peoples R China
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Wang, YumingLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten,Chinese Acad Sci, Peoples R China(Swepub:liu)yumwa29
(author)
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Xu, YeChinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
(author)
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Ma, KangqiaoChinese Acad Sci, Peoples R China
(author)
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An, CunbinChinese Acad Sci, Peoples R China
(author)
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He, ChangChinese Acad Sci, Peoples R China
(author)
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Wei, ZhixiangUniv Chinese Acad Sci, Peoples R China; Natl Ctr Nanosci and Technol, Peoples R China
(author)
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Gao, FengLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)fenga88
(author)
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Hou, JianhuiChinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
(author)
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Chinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R ChinaChinese Acad Sci, Peoples R China
(creator_code:org_t)
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In:Advanced Materials: WILEY-V C H VERLAG GMBH32:190935-96481521-4095
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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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Linköping University