A Medium-Bandgap Nonfullerene Acceptor Enabling Organic Photovoltaic Cells with 30% Efficiency under Indoor Artificial Light

A Medium-Bandgap Nonfullerene Acceptor Enabling Organic Photovoltaic Cells with 30% Efficiency under Indoor Artificial Light

© 2022 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 34(2022), 43 vom: 25. Okt., Seite e2207009
1. Verfasser: Zhang, Tao (VerfasserIn)
Weitere Verfasser: An, Cunbin, Xu, Ye, Bi, Pengqing, Chen, Zhihao, Wang, Jingwen, Yang, Ni, Yang, Yi, Xu, Bowei, Yao, Huifeng, Hao, Xiaotao, Zhang, Shaoqing, Hou, Jianhui
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article electrostatic potential exciton dissociation indoor organic photovoltaic cells medium-bandgap acceptors power conversion efficiency
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520 |a The correlation between molecular structure and photovoltaic performance is lagging for constructing high-performance indoor organic photovoltaic (OPV) cells. Herein, this relationship is investigated in depth by employing two medium-bandgap nonfullerene acceptors (NFAs). The newly synthesized NFA of FTCCBr exhibits a similar bandgap and molecular energy level, but a much stronger dipole moment and larger average electrostatic potential (ESP) compared with ITCC. After blending with the polymer donor PB2, the PB2:ITCC and PB2:FTCCBr blends exhibit favorable bulk-heterojunction morphologies and the same driving force, but the PB2:FTCCBr blend exhibits a large ESP difference. In OPV cells, the PB2:ITCC-based device produces a power conversion efficiency (PCE) of 11.0%, whereas the PB2:FTCCBr-based device gives an excellent PCE of 14.8% with an open-circuit voltage (VOC ) of 1.05 V, which is the highest value among OPV cells with VOC values above 1.0 V. When both acceptor-based devices work under a 1000 lux of 3000 K light-emitting diode, the PB2:ITCC-based 1 cm2 device yields a good PCE of 25.4%; in contrast, the PB2:FTCCBr-based 1 cm2 device outputs a record PCE of 30.2%. These results suggest that a large ESP offset in photovoltaic materials is important for achieving high-performance OPV cells 
650 4 |a Journal Article 
650 4 |a electrostatic potential 
650 4 |a exciton dissociation 
650 4 |a indoor organic photovoltaic cells 
650 4 |a medium-bandgap acceptors 
650 4 |a power conversion efficiency 
700 1 |a An, Cunbin  |e verfasserin  |4 aut 
700 1 |a Xu, Ye  |e verfasserin  |4 aut 
700 1 |a Bi, Pengqing  |e verfasserin  |4 aut 
700 1 |a Chen, Zhihao  |e verfasserin  |4 aut 
700 1 |a Wang, Jingwen  |e verfasserin  |4 aut 
700 1 |a Yang, Ni  |e verfasserin  |4 aut 
700 1 |a Yang, Yi  |e verfasserin  |4 aut 
700 1 |a Xu, Bowei  |e verfasserin  |4 aut 
700 1 |a Yao, Huifeng  |e verfasserin  |4 aut 
700 1 |a Hao, Xiaotao  |e verfasserin  |4 aut 
700 1 |a Zhang, Shaoqing  |e verfasserin  |4 aut 
700 1 |a Hou, Jianhui  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Advanced materials (Deerfield Beach, Fla.)  |d 1998  |g 34(2022), 43 vom: 25. Okt., Seite e2207009  |w (DE-627)NLM098206397  |x 1521-4095  |7 nnns 
773 1 8 |g volume:34  |g year:2022  |g number:43  |g day:25  |g month:10  |g pages:e2207009 
856 4 0 |u http://dx.doi.org/10.1002/adma.202207009  |3 Volltext 
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