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Efficient ternary organic solar cells with high absorption coefficient DIB-SQ as the third component |
| Hui-Xin Qi(齐慧欣)1, Bo-Han Yu(余泊含)1, Sai Liu(刘赛)1, Miao Zhang(张苗)1, Xiao-Ling Ma(马晓玲)1, Jian Wang(王健)2, Fu-Jun Zhang(张福俊)1 |
1 Key Laboratory of Luminescence and Optical Information of Ministry of Education, Beijing Jiaotong University, Beijing 100044, China;
2 College of Physics and Electronic Engineering, Taishan University, Taian 271021, China |
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Abstract A series of organic solar cells (OSCs) are prepared with PTB7:PC71 BM as the host materials and DIB-SQ as the third component. The power conversion efficienty (PCE) of OSCs can be improved from 6.79% to 7.92% by incorporating 6 wt% DIB-SQ into donors, resulting from the enhanced short circuit current density (JSC) and fill factor (FF). The increased JSC of the optimized ternary OSCs should be attributed to the enhanced photon harvesting of teranry active layer by incorporating DIB-SQ. Meanwhile, FF of the optimized ternary OSCs should be due to the optimied phase separation. The open circuit voltage (VOC) of tenray OSCs can be maintained at a constant of 0.75 V, indicating that all photogenerated holes willl be transported along the channels formed by PTB7.
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Received: 01 January 2018
Revised: 19 January 2018
Accepted manuscript online:
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PACS:
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88.40.jr
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(Organic photovoltaics)
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88.40.hj
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(Efficiency and performance of solar cells)
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85.30.-z
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(Semiconductor devices)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos.61675017,61377029,and 61705161) and the National Training Program of Innovation and Entrepreneurship for Undergraduates,China (Grant No.170170010). |
Corresponding Authors:
Jian Wang, Fu-Jun Zhang
E-mail: 1986.wangjian@163.com;fjzhang@bjtu.edu.cn
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Cite this article:
Hui-Xin Qi(齐慧欣), Bo-Han Yu(余泊含), Sai Liu(刘赛), Miao Zhang(张苗), Xiao-Ling Ma(马晓玲), Jian Wang(王健), Fu-Jun Zhang(张福俊) Efficient ternary organic solar cells with high absorption coefficient DIB-SQ as the third component 2018 Chin. Phys. B 27 058802
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