Green-Solvent Processed Blade-Coating Organic Solar Cells with an Efficiency Approaching 19% Enabled by Alkyl-Tailored Acceptors

IF 31.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Nano-Micro Letters Pub Date : 2023-11-02 DOI:10.1007/s40820-023-01208-0

Hairui Bai, Ruijie Ma, Wenyan Su, Top Archie Dela Peña, Tengfei Li, Lingxiao Tang, Jie Yang, Bin Hu, Yilin Wang, Zhaozhao Bi, Yueling Su, Qi Wei, Qiang Wu, Yuwei Duan, Yuxiang Li, Jiaying Wu, Zicheng Ding, Xunfan Liao, Yinjuan Huang, Chao Gao, Guanghao Lu, Mingjie Li, Weiguo Zhu, Gang Li, Qunping Fan, Wei Ma

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引用次数: 0

Abstract

Highlights

Alkyl-tailored Y-SMAs named YR-SeNF series with near-infrared absorption, different molecular crystallinity and self-assembly abilities are developed.
The related organic solar cells (OSCs) with an active layer processed from halogen-free solvents and spin-coating-free technologies achieve a ~ 19% efficiency.
Ternary OSCs offer a robust operating stability under MPP tracking and well-keep > 80% of the initial efficiency for even over 400 h.

Abstract Image

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烷基定制受体使绿色溶剂处理的叶片涂层有机太阳能电池的效率接近19%。

实验室中有机太阳能电池（OSC）的功率转换效率（PCE）已达到19%以上，通常通过使用有毒卤化溶剂的旋涂技术进行处理。然而，当使用刮刀涂层和/或用于大规模印刷的绿色溶剂时，通常会出现显著的PCE下降，这阻碍了OSC的实际开发。在这里，通过结合硒融合的中心核和萘融合的端基，开发了一系列新的N-烷基定制的小分子受体，命名为YR-SeNF，具有相同的分子主链。得益于N-烷基工程，近红外吸收YR-SeNF系列显示出不同的结晶度、堆积模式以及与聚合物供体的混溶性。研究表明，通过引入新设计的与定制的N-烷基链相关的客体受体，活性层形态的分子堆积、结晶度和垂直分布得到了很好的优化，为基于PM6:L8-BO:YR-SeNF的OSCs提供了改进的电荷转移动力学和稳定性。结果，在由具有高沸点的绿色溶剂邻二甲苯制造的刮刀涂层OSC中实现了接近19%的创纪录的高PCE。值得注意的是，三元OSC在最大功率点跟踪和良好保持下提供了强大的操作稳定性 > 80%的初始PCE持续甚至超过400小时。我们的烷基定制客户受体策略为开发绿色溶剂和叶片涂层加工的高效稳定的OSC提供了一种独特的方法，为工业发展铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

42.40

自引率

4.90%

发文量

715

审稿时长

13 weeks

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary and open-access journal that focus on science, experiments, engineering, technologies and applications of nano- or microscale structure and system in physics, chemistry, biology, material science, pharmacy and their expanding interfaces with at least one dimension ranging from a few sub-nanometers to a few hundreds of micrometers. Especially, emphasize the bottom-up approach in the length scale from nano to micro since the key for nanotechnology to reach industrial applications is to assemble, to modify, and to control nanostructure in micro scale. The aim is to provide a publishing platform crossing the boundaries, from nano to micro, and from science to technologies.