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Tailoring C-60 for Efficient Inorganic CsPbI2Br Perovskite Solar Cells and Modules
C. Liu,Y. Z. Yang,C. L. Zhang,S. H. Wu,L. Y. Wei,F. Guo,G. M. Arumugam,J. L. Hu,X. Y. Liu,J. Lin,R. E. I. Schropp and Y. H. Mai
2020
Source PublicationAdvanced Materials
ISSN0935-9648
Volume32Issue:8Pages:9
AbstractAlthough inorganic perovskite solar cells (PSCs) are promising in thermal stability, their large open-circuit voltage (V-OC) deficit and difficulty in large-area preparation still limit their development toward commercialization. The present work tailors C-60 via a codoping strategy to construct an efficient electron-transporting layer (ETL), leading to a significant improvement in V-OC of the inverted inorganic CsPbI2Br PSC. Specifically, tris(pentafluorophenyl)borane (TPFPB) is introduced as a dopant to lower the lowest unoccupied molecular orbital (LUMO) level of the C-60 layer by forming a Lewis acidic adduct. The enlarged free energy difference provides a favorable enhancement in electron injection and thereby reduces charge recombination. Subsequently, a nonhygroscopic lithium salt (LiClO4) is added to increase electron mobility and conductivity of the film, leading to a reduction in the device hysteresis and facilitating the fabrication of a large-area device. Finally, the as-optimized inorganic CsPbI2Br PSCs gain a champion power conversion efficiency (PCE) of 15.19%, with a stabilized power output (SPO) of 14.21% (0.09 cm(2)). More importantly, this work also demonstrates a record PCE of 14.44% for large-area inorganic CsPbI2Br PSCs (1.0 cm(2)) and reports the first inorganic perovskite solar module with the excellent efficiency exceeding 12% (10.92 cm(2)) by a self-developed quasi-curved heating method.
DOI10.1002/adma.201907361
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Indexed BySCI
Language英语
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Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/64944
Collection中国科学院长春光学精密机械与物理研究所
Recommended Citation
GB/T 7714
C. Liu,Y. Z. Yang,C. L. Zhang,S. H. Wu,L. Y. Wei,F. Guo,G. M. Arumugam,J. L. Hu,X. Y. Liu,J. Lin,R. E. I. Schropp and Y. H. Mai. Tailoring C-60 for Efficient Inorganic CsPbI2Br Perovskite Solar Cells and Modules[J]. Advanced Materials,2020,32(8):9.
APA C. Liu,Y. Z. Yang,C. L. Zhang,S. H. Wu,L. Y. Wei,F. Guo,G. M. Arumugam,J. L. Hu,X. Y. Liu,J. Lin,R. E. I. Schropp and Y. H. Mai.(2020).Tailoring C-60 for Efficient Inorganic CsPbI2Br Perovskite Solar Cells and Modules.Advanced Materials,32(8),9.
MLA C. Liu,Y. Z. Yang,C. L. Zhang,S. H. Wu,L. Y. Wei,F. Guo,G. M. Arumugam,J. L. Hu,X. Y. Liu,J. Lin,R. E. I. Schropp and Y. H. Mai."Tailoring C-60 for Efficient Inorganic CsPbI2Br Perovskite Solar Cells and Modules".Advanced Materials 32.8(2020):9.
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