Volume 9, Issue 4 2401244
Research Article

Scalable Slot-Die Coating of Passivation Layers for Improved Performance of Perovskite Solar Cell Modules

Yanqing Zhu

Yanqing Zhu

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070 China

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Yuxi Zhang

Yuxi Zhang

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070 China

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Min Hu

Corresponding Author

Min Hu

School of Electronic and Electrical Engineering, Hubei Province Engineering Research Center for Intelligent Micro-Nano Medical Equipment and Key Technologies, Wuhan Textile University, Wuhan, 430200 China

E-mail: [email protected]; [email protected]

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Li Wan

Li Wan

Faculty of Materials Science and Engineering, Hubei University, Wuhan, 430062 China

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Wenchao Huang

Wenchao Huang

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070 China

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Jingyuan Chu

Jingyuan Chu

China Triumph International Engineering Co., Ltd, Shanghai, 200063 China

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Yuying Hao

Yuying Hao

College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan, 030024 China

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Yi-Bing Cheng

Yi-Bing Cheng

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070 China

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Alexandr N. Simonov

Alexandr N. Simonov

School of Chemistry, Monash University, Victoria, 3800 Australia

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Jianfeng Lu

Corresponding Author

Jianfeng Lu

State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070 China

E-mail: [email protected]; [email protected]

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First published: 20 November 2024
Citations: 4

Abstract

Upscaling the perovskite solar cell (PSC) while avoiding losses in the power conversion efficiency presents a substantial challenge, especially when transitioning from ≤1 cm2 cells to ≥10 cm2 modules. In addition to the fabrication of key functional layers, scalable technologies for surface passivation, considered indispensable for achieving high-performance PSCs, are urgently required. However, studies on this topic remain limited. In this study, an industry-ready slot-die coating method for the effective passivation of perovskite films as a practical alternative is developed to the spin-coating procedures commonly used in research. The coating conditions and molecular structure of the passivation agent are systematically optimized to achieve high-quality film morphology and substantially suppress interface recombination. 2-chloro-5-(trifluoromethyl)-phenylammonium bromide exhibited the best results, improving the open-circuit voltage of cells and subcells in a module by 80 ± 4 and 72 ± 10 mV, respectively. Correspondingly, the larger-area (active area: 10 cm2) modules sustained the highest efficiency of 21.9% under simulated 1-sun irradiation. The encapsulated devices retained 94% of their initial performances after 750 h of continuous operation. The proposed surface-passivation slot-die technology is compatible with high-throughput processes and is employable for large-scale PSC fabrication.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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