Solvent Annealing Enables 15.39% Efficiency All-Small-Molecule Solar Cells through Improved Molecule Interconnection and Reduced Non-Radiative Loss
文献类型：期刊论文
| 作者 | Ge, Jinfeng; Hong, Ling; Song, Wei; Xie, Lin; Zhang, Jinsheng; Chen, Zhenyu; Yu, Kuibao; Peng, Ruixiang; Zhang, Xiaoli; Ge, Ziyi |
| 刊名 | ADVANCED ENERGY MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 11期号:22 |
| 英文摘要 | Post-treatment is of great importance to form nanoscale phase-separated morphology for all-small-molecule organic solar cells (ASM-OSCs), while the reasons for the difference between thermal annealing (TA) and solvent annealing (SVA) remain unclear. In this work, the influences of TA and SVA (with three common solvents of THF, CS2, and CF) are systematically investigated based on BT-2F:N3 through characterization of photovoltaic performance, molecular stacking, charge transfer, etc. The results indicate that: i) solvents with good solubility induce stronger molecular interaction than that of TA treatment, and thus endowing molecules with better mobility to migrate for crystallization and phase separation, which leads to better J-aggregation and molecular interconnection. ii) Donor-selectively dissolved CS2 is better for optimizing the donor domain for its suitable domain size, improved molecular interaction and interconnection, and reduced trap states. iii) CS2 imposes a small impact on N3 acceptors and thus alleviates the increment of non-radiative recombination. As a result, CS2 SVA with unique multifunctions enables a PCE of 15.39% with simultaneously improved voltage (0.845 V) and fill factor (75.02%), which is much higher than 14.66% of TA treatment. Moreover, 15.39% efficiency is also the highest value in binary ASM-OSCs. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22003]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Ge, ZY (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Ge, ZY (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Ge, Jinfeng,Hong, Ling,Song, Wei,et al. Solvent Annealing Enables 15.39% Efficiency All-Small-Molecule Solar Cells through Improved Molecule Interconnection and Reduced Non-Radiative Loss[J]. ADVANCED ENERGY MATERIALS,2021,11(22). |
| APA | Ge, Jinfeng.,Hong, Ling.,Song, Wei.,Xie, Lin.,Zhang, Jinsheng.,...&Ge, Ziyi.(2021).Solvent Annealing Enables 15.39% Efficiency All-Small-Molecule Solar Cells through Improved Molecule Interconnection and Reduced Non-Radiative Loss.ADVANCED ENERGY MATERIALS,11(22). |
| MLA | Ge, Jinfeng,et al."Solvent Annealing Enables 15.39% Efficiency All-Small-Molecule Solar Cells through Improved Molecule Interconnection and Reduced Non-Radiative Loss".ADVANCED ENERGY MATERIALS 11.22(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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