Single-Junction Binary-Blend Nonfullerene Polymer Solar Cells with 12.1% Efficiency

© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 29(2017), 18 vom: 11. Mai
1. Verfasser: Zhao, Fuwen (VerfasserIn)
Weitere Verfasser: Dai, Shuixing, Wu, Yang, Zhang, Qianqian, Wang, Jiayu, Jiang, Li, Ling, Qidan, Wei, Zhixiang, Ma, Wei, You, Wei, Wang, Chunru, Zhan, Xiaowei
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2017
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article fluorination fused-ring electron acceptors nonfullerene polymer solar cells
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520 |a A new fluorinated nonfullerene acceptor, ITIC-Th1, has been designed and synthesized by introducing fluorine (F) atoms onto the end-capping group 1,1-dicyanomethylene-3-indanone (IC). On the one hand, incorporation of F would improve intramolecular interaction, enhance the push-pull effect between the donor unit indacenodithieno[3,2-b]thiophene and the acceptor unit IC due to electron-withdrawing effect of F, and finally adjust energy levels and reduce bandgap, which is beneficial to light harvesting and enhancing short-circuit current density (JSC ). On the other hand, incorporation of F would improve intermolecular interactions through CF···S, CF···H, and CF···π noncovalent interactions and enhance electron mobility, which is beneficial to enhancing JSC and fill factor. Indeed, the results show that fluorinated ITIC-Th1 exhibits redshifted absorption, smaller optical bandgap, and higher electron mobility than the nonfluorinated ITIC-Th. Furthermore, nonfullerene organic solar cells (OSCs) based on fluorinated ITIC-Th1 electron acceptor and a wide-bandgap polymer donor FTAZ based on benzodithiophene and benzotriazole exhibit power conversion efficiency (PCE) as high as 12.1%, significantly higher than that of nonfluorinated ITIC-Th (8.88%). The PCE of 12.1% is the highest in fullerene and nonfullerene-based single-junction binary-blend OSCs. Moreover, the OSCs based on FTAZ:ITIC-Th1 show much better efficiency and better stability than the control devices based on FTAZ:PC71 BM (PCE = 5.22%) 
650 4 |a Journal Article 
650 4 |a fluorination 
650 4 |a fused-ring electron acceptors 
650 4 |a nonfullerene 
650 4 |a polymer solar cells 
700 1 |a Dai, Shuixing  |e verfasserin  |4 aut 
700 1 |a Wu, Yang  |e verfasserin  |4 aut 
700 1 |a Zhang, Qianqian  |e verfasserin  |4 aut 
700 1 |a Wang, Jiayu  |e verfasserin  |4 aut 
700 1 |a Jiang, Li  |e verfasserin  |4 aut 
700 1 |a Ling, Qidan  |e verfasserin  |4 aut 
700 1 |a Wei, Zhixiang  |e verfasserin  |4 aut 
700 1 |a Ma, Wei  |e verfasserin  |4 aut 
700 1 |a You, Wei  |e verfasserin  |4 aut 
700 1 |a Wang, Chunru  |e verfasserin  |4 aut 
700 1 |a Zhan, Xiaowei  |e verfasserin  |4 aut 
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