Effects of monohalogenated terminal units of non-fullerene acceptors on molecular aggregation and photovoltaic performance
Effects of monohalogenated terminal units of non-fullerene acceptors on molecular aggregation and photovoltaic performance
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非富勒烯受体单卤化末端单元对分子聚集和光伏性能的影响
DOI：
10.1016/j.solener.2020.07.100
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发表时间：
2020-09
期刊：
影响因子：
6.7
通讯作者：
Sun Yanming
中科院分区：
文献类型：
--
作者：
Zhang Min;Zeng Min;Ye Linglong;Tan Songting;Zhao Bin;Ryu Hwa Sook;Woo Han Young;Sun Yanming
Three small molecule acceptors (SMAs), namedZF,ZCandZB, have been designed and synthesized for organic solar cells (OSCs) by introducing single F, Cl and Br atom on each terminal unit, respectively. The effects of different halogen substituent on molecular aggregation, photophysical and photovoltaic performance have been systematically studied. Owing to its strong electronegativity of halogens, all the acceptors with monohalogenated terminal units possess red-shifted absorption spectra and deeper frontier energy levels compared to the corresponding acceptor without halogen substituents reported in the literature. Among the SMAs,ZBwith brominated terminal units was found to show the higher molar absorption coefficient (2.31 × 105M−1cm−1), more orderly face-on π-π stacking, higher electron mobility and more favorable morphology when blended with PM6. As a result, thePM6:ZBOSCs yielded a high power conversion efficiency (PCE) of up to 15.23% with a high short-circuit current density (Jsc) of 26.38 mA cm−2, while the correspondingZF- andZC-based devices showed the relatively inferior PCEs of 13.36% and 14.71%, respectively. These results demonstrated that the modulation of electron-withdrawing halogen substituents on terminal group provides a promising strategy to design and synthesize efficient SMAs for fabricating high-performance OSCs.
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DOI：
10.1007/s40843-019-9415-2
发表时间：
2019-04
期刊：
Science China Materials
影响因子：
--
作者：
Yanna Sun;Huan-huan Gao;Y. Yi;Xiangjian Wan;Huanran Feng;Xin Ke;Yamin Zhang;Jing Yan;Chenxi Li-Che
通讯作者：
Yanna Sun;Huan-huan Gao;Y. Yi;Xiangjian Wan;Huanran Feng;Xin Ke;Yamin Zhang;Jing Yan;Chenxi Li-Che
影响因子：
7.9
作者：
Shigang Wan;Chunmei Chang;Jin-liang Wang;Gui-Zhou Yuan;Qing Wu;Maojie Zhang;Yongfang Li
通讯作者：
Shigang Wan;Chunmei Chang;Jin-liang Wang;Gui-Zhou Yuan;Qing Wu;Maojie Zhang;Yongfang Li
将氯原子插入共轭聚合物的π桥上可提高光伏性能
影响因子：
17.6
作者：
Ye Linglong;Xie Yuanpeng;Weng Kangkang;Ryu Hwa Sook;Li Chao;Cai Yunhao;Fu Huiting;Wei Donghui;Woo Han Young;Tan Songting;Sun Yanming
通讯作者：
Sun Yanming
影响因子：
29.4
作者：
Mai, Jiangquan;Xiao, Yiqun;Lu, Xinhui
通讯作者：
Lu, Xinhui
影响因子：
4.5
作者：
Cenqi Yan;Yang Wu;Jiayu Wang;Rong Li;Pei Cheng;Huitao Bai;Zhiqiang Zhan;Wei Ma;X. Zhan
通讯作者：
Cenqi Yan;Yang Wu;Jiayu Wang;Rong Li;Pei Cheng;Huitao Bai;Zhiqiang Zhan;Wei Ma;X. Zhan