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Carboxylate substit...
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Wu, JingnanSoochow University
(author)
Carboxylate substituted pyrazine: A simple and low-cost building block for novel wide bandgap polymer donor enables 15.3% efficiency in organic solar cells
- Article/chapterEnglish2021
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LIBRIS-ID:oai:research.chalmers.se:8045352f-b783-49cc-8c33-db10d64b27ba
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https://doi.org/10.1016/j.nanoen.2020.105679DOI
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https://research.chalmers.se/publication/521713URI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
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In addition to high power conversion efficiency (PCE) and good stability, the low-cost of photovoltaic materials is also very important for the practical application of organic solar cells (OSCs). Herein, we synthesized a carboxylate substituted pyrazine-based electron-deficient building block (DTCPz) with a simple structure and low synthetic cost, and then developed a novel wide bandgap polymer donor PFBCPZ. Due to the synergistic electron-withdrawing effects of the fluorination in donor unit (BDT-TF) and esterification and C=N double-bond in DTCPz unit, PFBCPZ shows a deeper HOMO level of −5.60 eV, a strong intermolecular π-π interaction, good crystallinity and stacking, and high hole-mobility of 2.11 × 10−3 cm2 V−1 s−1. Matched with a low bandgap acceptor IT-4F, excellent charge transfer, weak recombination, and small non-radiative energy loss in OSCs was achieved, resulting in an impressive fill factor of 0.785 and a high open-circuit voltage of 0.92 V. As a result, a PCE of up to 15.3% is obtained in OSCs, which is the highest value in the IT-4F-based binary OSCs so far and indicates that low-cost DTCPz with a simple structure is a promising building block to construct high-performance polymer donors for application in efficient OSCs.
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Fan, Qunping,1989Soochow University,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)qunping
(author)
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Xiong, MinghaiSoochow University
(author)
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Wang, QiutangXi'an Jiaotong University
(author)
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Chen, KaiXi'an Jiaotong University
(author)
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Liu, HaiqinDonghua University
(author)
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Gao, MengyuanTianjin University
(author)
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Ye, LongNorth Carolina State University,Tianjin University
(author)
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Guo, XiaSoochow University
(author)
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Fang, JinSoochow University
(author)
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Guo, QingSoochow University
(author)
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Su, WenyanChalmers tekniska högskola,Chalmers University of Technology
(author)
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Ma, Z. F.Donghua University
(author)
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Tang, Z.Donghua University
(author)
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Wang, Ergang,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)ergang
(author)
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Ade, HaraldNorth Carolina State University
(author)
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Zhang, MaojieSoochow University
(author)
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Soochow UniversityChalmers tekniska högskola
(creator_code:org_t)
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In:Nano Energy: Elsevier BV822211-2855
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Wu, Jingnan
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Fan, Qunping, 19 ...
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Xiong, Minghai
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Wang, Qiutang
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Chen, Kai
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Liu, Haiqin
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Gao, Mengyuan
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Ye, Long
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Guo, Xia
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Fang, Jin
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Guo, Qing
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Su, Wenyan
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Ma, Z. F.
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Tang, Z.
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Wang, Ergang, 19 ...
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Ade, Harald
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Zhang, Maojie
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Nano Energy
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Chalmers University of Technology