An Alkoxy‐Solubilizing Decacyclic Electron Acceptor for Efficient Ecofriendly As‐Cast Blade‐Coated Organic Solar Cells,Solar RRL

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An Alkoxy‐Solubilizing Decacyclic Electron Acceptor for Efficient Ecofriendly As‐Cast Blade‐Coated Organic Solar Cells
Solar RRL ( IF 6.0 ) Pub Date : 2020-03-20 , DOI: 10.1002/solr.202000108
Xiaona Han _{1,

2,

3} , Jingshuai Zhu _{2,

4} , Yiqun Xiao ₅ , Haotian Jiang ₃ , Zhenzhen Zhang ₁ , Jiayu Wang ₂ , Zhen Li ₄ , Yuze Lin ₁ , Xinhui Lu ₅ , Xiaowei Zhan ₂

Affiliation

The rapid development of organic solar cells (OSCs) based on nonfullerene acceptors has achieved significant breakthroughs in the power conversion efficiency (PCE) of spin‐coated devices. However, the spin‐coating method in a protective atmosphere seems unsuitable for the practical printing of high‐performance solar panels. In addition, the use of highly toxic solvents is also a stumbling block to the commercial application of OSCs. Thus, photoactive materials for scalable coating and ecofriendly manufacturing approaches are necessary to be developed for OSCs. Herein, a fused‐ring electron acceptor named F10IC2 bearing a decacycle core and solubilizing alkoxyl side chains is synthesized and applied in as‐cast blade‐coated OSCs by blending with polymer donor PTB7‐Th. As‐cast OSCs based on PTB7‐Th: F10IC2 blended films fabricated from chlorobenzene or chlorine‐free o‐xylene solvents in air without any posttreatment deliver a PCE of 12.5% and 11.4%, respectively, which are among the highest values reported for as‐cast blade‐coated OSCs. Herein, a strategy of alkoxyl solubilizing to design high‐performance material systems for ecofriendly scalable OSCs is provided, which is suitable for future industrial production.

中文翻译：

一种可溶解醇的十环电子受体，可用于高效环保的铸铸叶片涂层有机太阳能电池

基于非富勒烯受体的有机太阳能电池（OSC）的快速发展在旋涂设备的功率转换效率（PCE）方面取得了重大突破。但是，在保护性气氛中进行旋涂法似乎不适用于高性能太阳能电池板的实际印刷。另外，使用剧毒溶剂也是OSC商业应用的绊脚石。因此，必须为OSC开发用于可扩展涂层的光敏材料和环保的制造方法。本文合成了带有十环核和可溶解烷氧基侧链的名为F10IC2的稠环电子受体，并与聚合物供体PTB7-Th混合，用于浇铸的叶片包覆OSC中。基于PTB7-Th的铸态OSC：空气中的邻二甲苯溶剂未经任何后处理，其PCE分别为12.5％和11.4％，这是铸态叶片涂层OSC报道的最高值。本文提供了一种烷氧基增溶策略，以设计用于环保可扩展OSC的高性能材料系统，该策略适用于未来的工业生产。

更新日期：2020-03-20

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