Blade-coating, a prototype tool for slot-die coating is a promising technique showing high compatibility with large-area roll-to-roll coating. Here, a high-performance PM6:Y6-based device is fabricated with chlorobenzene (CB) through a novel binary solvent additive (1-chloronaphthalene (CN):diphenyl ether (DPE)). It can be found that the binary solvent additive can improve the crystallinity of the acceptor and forms a better phase separation domain, which would promote the effective separation of charge and inhibit charge recombination. As a result, high power conversion efficiency (PCE) of 15.77% can be achieved with the spin-coating method, which is similar to the best organic solar cells (OSCs) processed with chloroform (CF) solution. Moreover, a blade-coated OSC is also processed with CB and demonstrates a promising PCE of 11.69% with large-area device (1.2 cm²). These results are critical for the large-scale production of highly efficient OSCs.

中文翻译：

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高效二元溶剂添加剂加工有机太阳能电池的刮涂法

刮刀涂布是一种用于缝模涂布的原型工具，是一种很有前途的技术，显示出与大面积卷对卷涂布的高度兼容性。在这里，通过新型二元溶剂添加剂（1-氯萘（CN）：二苯醚（DPE））用氯苯（CB）制造了一种基于PM6：Y6的高性能器件。可以发现，二元溶剂添加剂可以提高受体的结晶度并形成更好的相分离域，这将促进电荷的有效分离并抑制电荷复合。因此，通过旋涂方法可以实现 15.77% 的高功率转换效率 (PCE)，这类似于用氯仿 (CF) 溶液处理的最佳有机太阳能电池 (OSC)。此外，刀片涂层 OSC 也用 CB 处理，并显示出有希望的 PCE 为 11。²）。这些结果对于大规模生产高效 OSC 至关重要。