Unraveling the Effect of Solvent Additive and Fullerene Component on Morphological Control in Organic Solar Cells

Lei Zhu; Quan-Zeng Zhang; Hong Ding; Ming Zhang; Xiao-Nan Xue; Wen-Kai Zhong; Zi-Chun Zhou; Jin-Qiu Xu; Wei Feng; Ye-Cheng Zou; Yong-Ming Zhang; Feng Liu

doi:10.1007/s10118-022-2807-0

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Unraveling the Effect of Solvent Additive and Fullerene Component on Morphological Control in Organic Solar Cells

RESEARCH ARTICLE | Updated：2022-11-16

- Unraveling the Effect of Solvent Additive and Fullerene Component on Morphological Control in Organic Solar Cells
- Unraveling the Effect of Solvent Additive and Fullerene Component on Morphological Control in Organic Solar Cells
- 高分子科学（英文版） 2022年40卷第12期页码：1604-1612
- Affiliations：
  
  a.Frontiers Science Center for Transformative Molecules, In-situ Center for Physical Science, and Center of Hydrogen Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
  b.State Key Laboratory of Fluorinated Functional Membrane Materials and Dongyue Future Hydrogen Energy Materials Company, Zibo 256401, China
- Author bio：
  
  fengliu82@sjtu.edu.cn
- Funds：
  
  This work was financially supported by the National Natural Science Foundation of China (Nos. 51973110, 21734009, 21905102 and 22109094), the National Key R&D Program of China (Nos. 2020YFB1505500 and 2020YFB1505502), the Program of Shanghai Science and Technology Commission science and technology innovation action plan (Nos. 20ZR1426200, 20511103800, 20511103802 and 20511103803), the Natural Science Foundation of Shandong Province (No. ZR2019LFG005), the Key research project of Shandong Province (No. 2020CXGC010403), the Center of Hydrogen Science, Shanghai Jiao Tong University, China. We thank Cheng Wang and Chenhui Zhu from Advanced Light Source for providing X-ray scattering tests, which were carried out at beamline 7.3.3 and 11.0.1.2 at the Advanced Light Source, Molecular Foundry, Lawrence Berkeley National Laboratory, supported by the DOE, Office of Science, and Office of Basic Energy Sciences.;Electronic supplementary information (ESI) is available free of charge in the online version of this article at http://doi.org/10.1007/s10118-022-2807-0.
- DOI：10.1007/s10118-022-2807-0
  中图分类号：
- 收稿：2022-04-11，
  
  修回：2022-5-9，
  
  录用：2022-5-19，
  
  网络首发：2022-09-05，
  
  纸质出版：2022-12-01
- Accepted：
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Zhu, L.; Zhang, Q. Z.; Ding, H.; Zhang, M.; Xue, X. N.; Zhong, W. K.; Zhou, Z. C.; Xu, J. Q.; Feng, W.; Zou, Y. C.; Zhang, Y. M.; Liu, F. Unraveling the effect of solvent additive and fullerene component on morphological control in organic solar cells. Chinese J. Polym. Sci. 2022, 40, 1604–1612

Lei Zhu, Quan-Zeng Zhang, Hong Ding, et al. Unraveling the Effect of Solvent Additive and Fullerene Component on Morphological Control in Organic Solar Cells[J]. Chinese Journal of Polymer Science, 2022, 40(12): 1604-1612.
Zhu, L.; Zhang, Q. Z.; Ding, H.; Zhang, M.; Xue, X. N.; Zhong, W. K.; Zhou, Z. C.; Xu, J. Q.; Feng, W.; Zou, Y. C.; Zhang, Y. M.; Liu, F. Unraveling the effect of solvent additive and fullerene component on morphological control in organic solar cells. Chinese J. Polym. Sci. 2022, 40, 1604–1612 DOI： 10.1007/s10118-022-2807-0.

Lei Zhu, Quan-Zeng Zhang, Hong Ding, et al. Unraveling the Effect of Solvent Additive and Fullerene Component on Morphological Control in Organic Solar Cells[J]. Chinese Journal of Polymer Science, 2022, 40(12): 1604-1612. DOI： 10.1007/s10118-022-2807-0.

摘要

This work shows the effect of solvent additives and fullerene third components on the film morphology of organic solar cells and points to the importance of the balance between material crystallization and phase separation.

Abstract

The manipulation of the morphology of the active layers is crucial for improving the performance of organic photovoltaic (OPV) devices. In particular

the development of non-fullerene acceptors (NFAs) has led to a large number of new materials with more complex interactions. Therefore

the investigation on the morphology control mechanism is the key aspect in providing guidance for material design and device optimization. In this study

the film morphology optimization using 1

8-diiodooctane (DIO) additive and a ternary fullerene acceptor strategy have been carried out based on the PCE10:ITIC blends. It is seen that suitable amount of DIO helps to increase the crystallization of the blended thin film. However

excessive DIO elevates the crystallization-induced phase separation and the domain size can exceed the exciton diffusion length

leading to efficiency drop. The addition of fullerene acceptor can improve the carrier transport of the blends

and its presence could retard the excessive phase separation induced by DIO additive. Under the joint optimization of the solvent additive and PC

BM acceptor

the film morphology achieves a balance between crystallization and phase separation scales

the exciton diffusion and carrier transport are also optimized

and the short-circuit current (

) and fill factor (FF) of the device can be improved significantly.

关键词

Keywords

references

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