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Over 16% efficiency...
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Cui, YongChinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, Peoples R China
(author)
Over 16% efficiency organic photovoltaic cells enabled by a chlorinated acceptor with increased open-circuit voltages
- Article/chapterEnglish2019
Publisher, publication year, extent ...
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2019-06-07
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NATURE PUBLISHING GROUP,2019
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electronicrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:liu-158547
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-158547URI
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https://doi.org/10.1038/s41467-019-10351-5DOI
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 Natural Science Foundation of China [51961135103, 51673201, 21835006, 91633301, 21805287]; Chinese Academy of Science [XDB12030200, KJZDEW-J01]; Youth Innovation Promotion Association CAS [2018043]; Swedish Energy Agency Energimyndigheten [2016-010174]; Swedish Research Council VR [2018-06048]
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Broadening the optical absorption of organic photovoltaic (OPV) materials by enhancing the intramolecular push-pull effect is a general and effective method to improve the power conversion efficiencies of OPV cells. However, in terms of the electron acceptors, the most common molecular design strategy of halogenation usually results in down-shifted molecular energy levels, thereby leading to decreased open-circuit voltages in the devices. Herein, we report a chlorinated non-fullerene acceptor, which exhibits an extended optical absorption and meanwhile displays a higher voltage than its fluorinated counterpart in the devices. This unexpected phenomenon can be ascribed to the reduced non-radiative energy loss (0.206 eV). Due to the simultaneously improved short-circuit current density and open-circuit voltage, a high efficiency of 16.5% is achieved. This study demonstrates that finely tuning the OPV materials to reduce the bandgap-voltage offset has great potential for boosting the efficiency.
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Added entries (persons, corporate bodies, meetings, titles ...)
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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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Zhang, TaoChinese Acad Sci, Peoples R China
(author)
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Wang, YumingLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)yumwa29
(author)
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Hong, LingChinese Acad Sci, Peoples R China; Univ Chinese Acad Sci, 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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Xu, BoweiChinese Acad Sci, Peoples R China
(author)
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Zhang, ShaoqingChinese Acad Sci, Peoples R China; Univ Sci and Technol Beijing, Peoples R China
(author)
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Peng, JingOrgantec Ltd, Peoples R China
(author)
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Wei, ZhixiangNatl 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:Nature Communications: NATURE PUBLISHING GROUP102041-1723
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Cui, Yong
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Yao, Huifeng
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Zhang, Jianqi
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Zhang, Tao
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Wang, Yuming
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Hong, Ling
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Xian, Kaihu
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Xu, Bowei
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Zhang, Shaoqing
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Peng, Jing
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Wei, Zhixiang
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Gao, Feng
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Hou, Jianhui
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Linköping University