Near-Infrared Electron Acceptors with Fluorinated Regioisomeric Backbone for Highly Efficient Polymer Solar Cells

© 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 30(2018), 52 vom: 15. Dez., Seite e1803769
1. Verfasser: Chen, Fang-Xiao (VerfasserIn)
Weitere Verfasser: Xu, Jing-Qi, Liu, Zhi-Xi, Chen, Ming, Xia, Ruoxi, Yang, Yongchao, Lau, Tsz-Ki, Zhang, Yingzhu, Lu, Xinhui, Yip, Hin-Lap, Jen, Alex K-Y, Chen, Hongzheng, Li, Chang-Zhi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2018
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article near-infrared absorption nonfullerene acceptors polymer solar cells tandem devices
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520 |a Solar photon-to-electron conversion with polymer solar cells (PSCs) has experienced rapid development in the recent few years. Even so, the exploration of molecules and devices in efficiently converting near-infrared (NIR) photons into electrons remains critical, yet challenging. Herein presented is a family of near-infrared nonfullerene acceptors (NIR NFAs, T1-T4) with fluorinated regioisomeric A-Aπ-D-Aπ-A backbones for constructing efficient single-junction and tandem PSCs with photon response up to 1000 nm. It is found that the tuning of the regioisomeric bridge (Aπ) and fluoro (F)-substituents on a molecular skeleton strongly influences the backbone conformation and conjugation, leading to the optimized optoelectronic and stable stacking of resultant NFAs, which eventually impacts the performance of derived PSCs. In PSCs, the proximal NFAs with varied F-atoms (T1-T3) mostly outperform than that of distal NFA (T4). Notably, single-junction PSC with PTB7-Th:T2 blend can reach 10.87% power conversion efficiency (PCE), after implementing a solvent additive to improve blend morphology. Moreover, efficient tandem PSCs are fabricated through integrating such NIR cells with mediate bandgap nonfullerene-based subcells, to achieve a PCE of 14.64%. The results reveal the structural design of organic semiconductor and device with improved photovoltaic performance 
650 4 |a Journal Article 
650 4 |a near-infrared absorption 
650 4 |a nonfullerene acceptors 
650 4 |a polymer solar cells 
650 4 |a tandem devices 
700 1 |a Xu, Jing-Qi  |e verfasserin  |4 aut 
700 1 |a Liu, Zhi-Xi  |e verfasserin  |4 aut 
700 1 |a Chen, Ming  |e verfasserin  |4 aut 
700 1 |a Xia, Ruoxi  |e verfasserin  |4 aut 
700 1 |a Yang, Yongchao  |e verfasserin  |4 aut 
700 1 |a Lau, Tsz-Ki  |e verfasserin  |4 aut 
700 1 |a Zhang, Yingzhu  |e verfasserin  |4 aut 
700 1 |a Lu, Xinhui  |e verfasserin  |4 aut 
700 1 |a Yip, Hin-Lap  |e verfasserin  |4 aut 
700 1 |a Jen, Alex K-Y  |e verfasserin  |4 aut 
700 1 |a Chen, Hongzheng  |e verfasserin  |4 aut 
700 1 |a Li, Chang-Zhi  |e verfasserin  |4 aut 
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773 1 8 |g volume:30  |g year:2018  |g number:52  |g day:15  |g month:12  |g pages:e1803769 
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