浙江大学李昌治团队报道了不对称氯化非熔合电子受体制备高效稳定有机太阳能电池。相关研究成果发表在2022年11月25日出版的《德国应用化学》。

为了促进有机太阳能电池（OSCs）的应用，迫切需要寻找具有成本效益的有机半导体，但仍有待实现。

该文中，研究人员成功开发了两种非稠环电子受体（NFREAs），形成的NFREA衍生OSCs最高效率为16.2%。这些OSCs在没有紫外线（UV）过滤的情况下，在一太阳光强照射下表现出优异的运行稳定性。研究表明，芳香族侧链上卤素取代基的调节，作为调节受体分子间相互作用和光电性质的新结构工具，不仅促进了固体中三维堆叠的互锁触觉框架，还改善了受体的电荷动力学，以实现高性能和稳定的OSCs。

附：英文原文

Title: Unsymmetrically Chlorinated Non-Fused Electron Acceptor Leads to High-Efficiency and Stable Organic Solar Cells

Author: De-Li Ma, Qian-Qian Zhang, Chang-Zhi Li

Issue&Volume: 2022-11-25

Abstract: Searching the cost-effective organic semiconductors is strongly needed in order to facilitate the practice of organic solar cells (OSCs), yet to be fulfilled. Herein, we have succeeded in developing two non-fused ring electron acceptors (NFREAs), leading to the highest efficiency of 16.2% for the NFREA derived OSCs. These OSCs exhibit the superior operational stabilities under one sun equivalent illumination without ultraviolet (UV) filtration. It is revealed that the modulation of halogen substituents on aromatic side chains, as the new structural tool to tune the intermolecular interaction and optoelectronic properties of acceptors, not only promotes the interlocked tic-tac-toe frame of three-dimensional stacks in solid, but also improves charge dynamics of acceptors to enable high-performance and stable OSCs.

DOI: 10.1002/anie.202214931

Source: https://onlinelibrary.wiley.com/doi/10.1002/anie.202214931