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Tuning the electron...
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Zhu, CanCent South Univ, Peoples R China
(author)
Tuning the electron-deficient core of a non-fullerene acceptor to achieve over 17% efficiency in a single-junction organic solar cell
- Article/chapterEnglish2020
Publisher, publication year, extent ...
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2020
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ROYAL SOC CHEMISTRY,2020
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:liu-168865
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-168865URI
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https://doi.org/10.1039/d0ee00862aDOI
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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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Y. Zou acknowledges the National Natural Science Foundation of China (NSFC) (21875286), National Key Research & Development Projects of China (2017YFA0206600), and Science Fund for Distinguished Young Scholars of Hunan Province (2017JJ1029). Y. Li is thankful the financial support from NSFC (91633301).
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Finding effective molecular design strategies to enable efficient charge generation and small energy loss is among the long-standing challenges in developing high performance non-fullerene organic solar cells (OSCs). Recently, we reported Y-series non-fullerene acceptors with an electron-deficient-core-based fused structure (typically Y6), opening a new door to achieve high external quantum efficiency (∼80%) while maintaining low energy loss (∼0.57 eV). On this basis, further reducing the energy losses and ultimately improving the performance of OSCs has become a research hotspot. In this paper, we design and synthesize a new member of the Y-series acceptor family, Y18, which adopts a fused benzotriazole segment with unique luminescence properties as its electron-deficient core. Compared to Y6, the benzotriazole-based acceptor Y18 exhibits extended optical absorption and higher voltage. Consequently, the device delivers a promising power conversion efficiency of 16.52% with a very low energy loss of 0.53 eV. Further device optimization by exploiting a ternary blend strategy allowed us to achieve a high efficiency of 17.11% (certified as 16.76% by NREL). Y18 may become one of the most important candidate materials for its broader absorption spectra and higher voltage of Y18 (compared to Y6) in the OSCs field.
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Yuan, JunCent South Univ, Peoples R China
(author)
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Cai, FangfangCent South Univ, Peoples R China
(author)
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Meng, LeiChinese Acad Sci, Peoples R China
(author)
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Zhang, HuotianLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)huozh22
(author)
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Chen, HonggangCent South Univ, Peoples R China
(author)
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Li, JingCent South Univ, Peoples R China
(author)
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Qiu, BeibeiChinese Acad Sci, Peoples R China
(author)
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Peng, HongjianCent South Univ, Peoples R China
(author)
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Chen, ShanshanUlsan Natl Inst Sci & Technol UNIST, South Korea; Chongqing Univ, Peoples R China
(author)
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Hu, YunbinCent South Univ, Peoples R China
(author)
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Yang, ChangdukUlsan Natl Inst Sci & Technol UNIST, South Korea
(author)
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Gao, FengLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten(Swepub:liu)fenga88
(author)
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Zou, YingpingCent South Univ, Peoples R China
(author)
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Li, YongfangChinese Acad Sci, Peoples R China
(author)
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Cent South Univ, Peoples R ChinaChinese Acad Sci, Peoples R China
(creator_code:org_t)
Related titles
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In:Energy & Environmental Science: ROYAL SOC CHEMISTRY13:8, s. 2459-24661754-56921754-5706
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- By the author/editor
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Zhu, Can
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Yuan, Jun
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Cai, Fangfang
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Meng, Lei
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Zhang, Huotian
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Chen, Honggang
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show more...
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Li, Jing
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Qiu, Beibei
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Peng, Hongjian
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Chen, Shanshan
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Hu, Yunbin
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Yang, Changduk
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Gao, Feng
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Zou, Yingping
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Li, Yongfang
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- NATURAL SCIENCES
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NATURAL SCIENCES
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Energy & Environ ...
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Linköping University