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A monothiophene uni...
A monothiophene unit incorporating both fluoro and ester substitution enabling high-performance donor polymers for non-fullerene solar cells with 16.4% efficiency
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- Sun, Huiliang (författare)
- Southern Univ Sci and Technol SUSTech, Peoples R China; Southern Univ Sci and Technol SUSTech, Peoples R China
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- Liu, Tao (författare)
- HKUST, Peoples R China
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- Yu, Jianwei (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Lau, Tsz-Ki (författare)
- Chinese Univ Hong Kong, Peoples R China
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- Zhang, Guangye (författare)
- eFlexPV Ltd, Peoples R China
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- Zhang, Yujie (författare)
- Southern Univ Sci and Technol SUSTech, Peoples R China; Southern Univ Sci and Technol SUSTech, Peoples R China
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- Su, Mengyao (författare)
- Southern Univ Sci and Technol SUSTech, Peoples R China; Southern Univ Sci and Technol SUSTech, Peoples R China
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- Tang, Yumin (författare)
- Southern Univ Sci and Technol SUSTech, Peoples R China; Southern Univ Sci and Technol SUSTech, Peoples R China
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- Ma, Ruijie (författare)
- HKUST, Peoples R China; HKUST, Peoples R China
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- Liu, Bin (författare)
- Southern Univ Sci and Technol SUSTech, Peoples R China; Southern Univ Sci and Technol SUSTech, Peoples R China
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- Liang, Jiaen (författare)
- HKUST, Peoples R China; HKUST, Peoples R China
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- Feng, Kui (författare)
- Southern Univ Sci and Technol SUSTech, Peoples R China; Southern Univ Sci and Technol SUSTech, Peoples R China
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- Lu, Xinhui (författare)
- Chinese Univ Hong Kong, Peoples R China
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- Guo, Xugang (författare)
- Southern Univ Sci and Technol SUSTech, Peoples R China; Southern Univ Sci and Technol SUSTech, Peoples R China
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- Gao, Feng (författare)
- Linköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska fakulteten
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- Yan, He (författare)
- HKUST, Peoples R China; HKUST, Peoples R China
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(creator_code:org_t)
- 2019
- 2019
- Engelska.
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Ingår i: Energy & Environmental Science. - : ROYAL SOC CHEMISTRY. - 1754-5692 .- 1754-5706. ; 12:11, s. 3328-3337
- 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
- Thiophene and its derivatives have been extensively used in organic electronics, particularly in the field of polymer solar cells (PSCs). Significant research efforts have been dedicated to modifying thiophene-based units by attaching electron-donating or withdrawing groups to tune the energy levels of conjugated materials. Herein, we report the design and synthesis of a novel thiophene derivative, FE-T, featuring a monothiophene functionalized with both an electron-withdrawing fluorine atom (F) and an ester group (E). The FE-T unit possesses distinctive advantages of both F and E groups, the synergistic effects of which enable significant downshifting of the energy levels and enhanced aggregation/crystallinity of the resulting organic materials. Shown in this work are a series of polymers obtained by incorporating the FE-T unit into a PM6 polymer to fine-tune the energetics and morphology of this high-performance PSC material. The optimal polymer in the series shows a downshifted HOMO and an improved morphology, leading to a high PCE of 16.4% with a small energy loss (0.53 eV) enabled by the reduced non-radiative energy loss (0.23 eV), which are among the best values reported for non-fullerene PSCs to date. This work shows that the FE-T unit is a promising building block to construct donor polymers for high-performance organic photovoltaic cells.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
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Sun, Huiliang
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Liu, Tao
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Yu, Jianwei
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Lau, Tsz-Ki
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Zhang, Guangye
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Zhang, Yujie
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visa fler...
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Su, Mengyao
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Tang, Yumin
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Ma, Ruijie
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Liu, Bin
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Liang, Jiaen
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Feng, Kui
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Lu, Xinhui
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Guo, Xugang
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Gao, Feng
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Yan, He
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Linköpings universitet