High-speed sequential deposition of photoactive layers for organic solar cell manufacturing

Rui Sun, Tao Wang, Xinrong Yang, Yao Wu, Yang Wang, Qiang Wu, Maojie Zhang, Christoph J. Brabec, Yongfang Li and Jie Min ()
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Rui Sun: Wuhan University
Tao Wang: Wuhan University
Xinrong Yang: Wuhan University
Yao Wu: Wuhan University
Yang Wang: Soochow University
Qiang Wu: Wuhan University
Maojie Zhang: Soochow University
Christoph J. Brabec: Friedrich-Alexander-Universität Erlangen-Nürnberg
Yongfang Li: Soochow University
Jie Min: Wuhan University

Nature Energy, 2022, vol. 7, issue 11, 1087-1099

Abstract: Abstract Despite the great success of organic photovoltaics in terms of device efficiency and stability at the laboratory scale, pressing demand for high-throughput and cost-effective solutions remains unresolved and rarely reported. Here we propose that a sequential-deposition, blade-coating approach using donor and acceptor materials can facilitate high-speed fabrication of photoactive layers while maintaining device performance. The sequential-deposition-processed blend and thickness of its designed PM6:T8 system can be optimized by the fine-tuning of the solution concentrations and coating speeds. We show that this strategy can be applied to a non-halogenated solvent and under high-humidity conditions. This high-speed approach is applicable to other non-fullerene photovoltaic systems and the slot-die coating technique. Techno-economic analysis suggests that this strategy can decrease the minimum sustainable price of module manufacturing. Overall, this work represents a step towards the scalable, cost-effective manufacturing of organic photovoltaics with both high performance and high throughput.

Date: 2022
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DOI: 10.1038/s41560-022-01140-4

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