Small-molecule acceptors with long alkyl chains for high-performance as-cast nonfullerene organic solar cells

2021 ◽  
Vol 93 ◽  
pp. 106167
Author(s):  
Hao Lin ◽  
Muhammad Abdullah Adil ◽  
Qian Zhang ◽  
Jianqi Zhang ◽  
Qiang Wang
2021 ◽  
Vol 13 (5) ◽  
pp. 6461-6469
Author(s):  
María Privado ◽  
Fernando G. Guijarro ◽  
Pilar de la Cruz ◽  
Rahul Singhal ◽  
Fernando Langa ◽  
...  

2018 ◽  
Vol 53 ◽  
pp. 273-279 ◽  
Author(s):  
Chennan Ye ◽  
Yan Wang ◽  
Zhaozhao Bi ◽  
Xia Guo ◽  
Qunping Fan ◽  
...  

2018 ◽  
Vol 2 (7) ◽  
pp. 1360-1365 ◽  
Author(s):  
Guofang Yang ◽  
Jing Liu ◽  
Lik-Kuen Ma ◽  
Shangshang Chen ◽  
Joshua Yuk Lin Lai ◽  
...  

Carboxylate substitution can enhance crystallinity and introduce purer domains; alkyl chains provide a temperature-dependent aggregation property.


2019 ◽  
Vol 6 (21) ◽  
pp. 1901613 ◽  
Author(s):  
Hua Tang ◽  
Tongle Xu ◽  
Cenqi Yan ◽  
Jie Gao ◽  
Hang Yin ◽  
...  

Materials ◽  
2020 ◽  
Vol 13 (6) ◽  
pp. 1324 ◽  
Author(s):  
Weifang Zhang ◽  
Zicha Li ◽  
Suling Zhao ◽  
Zheng Xu ◽  
Bo Qiao ◽  
...  

At present, most high-performance non-fullerene materials are centered on fused rings. With the increase in the number of fused rings, production costs and production difficulties increase. Compared with other non-fullerenes, small molecule INTIC has the advantages of easy synthesis and strong and wide infrared absorption. According to our previous report, the maximum power conversion efficiency (PCE) of an organic solar cell using PTB7-Th:INTIC as the active layer was 7.27%. In this work, other polymers, PTB7, PBDB-T and PBDB-T-2F, as the donor materials, with INTIC as the acceptor, are selected to fabricate cells with the same structure to optimize their photovoltaic performance. The experimental results show that the optimal PCE of PBDB-T:INTIC based organic solar cells is 11.08%, which, thanks to the open voltage (VOC) increases from 0.80 V to 0.84 V, the short circuit current (JSC) increases from 15.32 mA/cm2 to 19.42 mA/cm2 and the fill factor (FF) increases from 60.08% to 67.89%, then a 52.4% improvement in PCE is the result, compared with the devices based on PTB7-Th:INTIC. This is because the PBDB-T:INTIC system has better carrier dissociation and extraction, carrier transportation and higher carrier mobility.


2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Ruimin Zhou ◽  
Zhaoyan Jiang ◽  
Chen Yang ◽  
Jianwei Yu ◽  
Jirui Feng ◽  
...  

AbstractThe high efficiency all-small-molecule organic solar cells (OSCs) normally require optimized morphology in their bulk heterojunction active layers. Herein, a small-molecule donor is designed and synthesized, and single-crystal structural analyses reveal its explicit molecular planarity and compact intermolecular packing. A promising narrow bandgap small-molecule with absorption edge of more than 930 nm along with our home-designed small molecule is selected as electron acceptors. To the best of our knowledge, the binary all-small-molecule OSCs achieve the highest efficiency of 14.34% by optimizing their hierarchical morphologies, in which the donor or acceptor rich domains with size up to ca. 70 nm, and the donor crystals of tens of nanometers, together with the donor-acceptor blending, are proved coexisting in the hierarchical large domain. All-small-molecule photovoltaic system shows its promising for high performance OSCs, and our study is likely to lead to insights in relations between bulk heterojunction structure and photovoltaic performance.


Nano Energy ◽  
2020 ◽  
Vol 67 ◽  
pp. 104209 ◽  
Author(s):  
Bin Kan ◽  
Xuebin Chen ◽  
Ke Gao ◽  
Ming Zhang ◽  
Francis Lin ◽  
...  

2015 ◽  
Vol 19 ◽  
pp. 98-104 ◽  
Author(s):  
Yi Zuo ◽  
Qiang Zhang ◽  
Xiangjian Wan ◽  
Miaomiao Li ◽  
Huijing Zhang ◽  
...  

2011 ◽  
Vol 133 (40) ◽  
pp. 15822-15825 ◽  
Author(s):  
Li-Yen Lin ◽  
Yi-Hong Chen ◽  
Zheng-Yu Huang ◽  
Hao-Wu Lin ◽  
Shu-Hua Chou ◽  
...  

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