In Situ Absorption Characterization Guided Slot‐Die‐Coated High‐Performance Large‐Area Flexible Organic Solar Cells and Modules

Autor: Yi‐Fan Shen, Hao Zhang, Jianqi Zhang, Chenyang Tian, Yanan Shi, Dingding Qiu, Ziqi Zhang, Kun Lu, Zhixiang Wei
Rok vydání: 2023
Předmět:
Zdroj: Advanced Materials. 35:2209030
ISSN: 1521-4095
0935-9648
Popis: Slot-die coating is recognized as the most compatible method for the roll-to-roll (R2R) processing of large-area flexible organic solar cells (OSCs). However, the photovoltaic performance of large-area flexible OSC lags significantly behind that of traditional spin coating devices. In this work, two acceptors, Qx-1 and Qx-2, show quite different film-formation kinetics in the slot-die coating process. The in-situ absorption spectrum study indicates that the excessive crystallinity of Qx-2 provides early phase separation and early aggregation, resulting in oversized crystal domains. Consequently, the PM6:Qx-1 based 1 cm
Databáze: OpenAIRE
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