Non-Halogenated Solvents Processed Efficient ITO-Free Flexible Organic Solar Cells with Upscaled Area,Macromolecular Rapid Communications

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Non-Halogenated Solvents Processed Efficient ITO-Free Flexible Organic Solar Cells with Upscaled Area
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2022-03-17 , DOI: 10.1002/marc.202200049
Feng Zhao ₁ , Xiangjun Zheng ₁ , Shuixing Li ₁ , Kangrong Yan ₁ , Weifei Fu ₁ , Lijian Zuo ₁ , Hongzheng Chen ₁

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Organic solar cells (OSCs) show the potential to harness solar energy at a lower cost and in a greener way with the merits of mechanical flexibility and potential low-cost upscaling production with solution processing. Meanwhile, the common use of toxic halogenated solvents causes pollution to the natural environment, and thus, needs to be avoided. Following the authors' previous work on the design of top-illuminated ultrathin Ag-based device structure highlighting most merits of OSC, herein non-halogen solvent and additive processing OSCs are presented, which exhibit high power conversion efficiency (PCE) of 17.64%, close to the best PCE with the commonly used halogen solvent. Interestingly, it is observed that the additive and the multicomponent strategy (blending third component BTP-S2 into PM6:L8-BO binary blend) synergistically affect the optimal morphology and device performance. Finally, OSC devices featuring green solvent processing, indium tin oxide-free, flexibility, and upscaling merits are fabricated and exhibit the best PCE of 13.76% with high mechanical robustness and good stability against heat or light illumination. This work provides a prospective potential for manufacturing the OSC toward practical applications.

中文翻译：

非卤化溶剂处理的高效无 ITO 柔性有机太阳能电池，面积扩大

有机太阳能电池 (OSC) 显示出以更低的成本和更环保的方式利用太阳能的潜力，具有机械灵活性和通过溶液处理潜在的低成本大规模生产的优点。同时，有毒卤代溶剂的普遍使用会对自然环境造成污染，因此需要避免。继作者之前对突出 OSC 优点的顶照式超薄银基器件结构设计的工作之后，本文介绍了非卤素溶剂和添加剂处理 OSC，其具有 17.64% 的高功率转换效率 (PCE)，与常用的卤素溶剂接近最好的PCE。有趣的是，观察到添加剂和多组分策略（将第三组分 BTP-S2 混合到 PM6 中：L8-BO 二元混合物）协同影响最佳形态和器件性能。最后，制造了具有绿色溶剂处理、无氧化铟锡、柔韧性和升级优点的 OSC 器件，并表现出 13.76% 的最佳 PCE，具有高机械鲁棒性和良好的耐热或光照稳定性。这项工作为制造 OSC 的实际应用提供了潜在的潜力。

更新日期：2022-03-17

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