Organic solar cells (OSCs) have reached their second golden age in recent two years with a boosted number of publications. Non-fullerene acceptor (NFA) materials have become a rising star in the field which are widely applied in organic solar cells because of their excellent optoelectronic properties, such as strong light-harvesting ability and tunable energy level. Unlike the low synthetic flexibility and high production cost of fullerene materials, NFAs exhibit flexible structures, and relatively low fabrication costs. Recently, the ternary strategy has become another hot research topic in the field, which introduces a third component into the binary host system for OSCs. The application of a ternary strategy can break the limits of light absorption brought by the host system, improve the morphology and energy level alignment for the active layer and thus improved the efficiency of organic solar cell devices. Benefiting from the advancement in both NFA and ternary strategy, the power conversion efficiency (PCE) of organic solar cell has exceeded over 17.5% to date. A comprehensive review of the recent progress in NFA based ternary OSCs (TOSCs) is needed in the field. Herein, this review mainly focuses on recent research on ternary organic solar cells using NFA materials during the last two years. Firstly, device physics and frequently used active materials in NFA based TOSCs are summarized and discussed. Then, the recent reported high-performance NFA based TOSCs are reviewed. Finally, the outlook and future research direction in the field are proposed. This review aims to provide an insight into NFA based TOSCs and help researchers to explore the full potential of OSCs.

随着出版数量的增加，有机太阳能电池（OSC）在最近两年达到了第二个黄金时代。非富勒烯受体（NFA）材料因其出色的光电性能（例如强大的集光能力和可调节的能级）而成为该领域中的后起之秀，被广泛应用于有机太阳能电池中。与较低的合成柔韧性和富勒烯材料的高生产成本不同，NFA具有柔性结构和相对较低的制造成本。近来，三元策略已成为该领域的另一个热门研究课题，它在OSC的二进制主机系统中引入了第三个组件。三元策略的应用可以打破主机系统带来的光吸收限制，改善了有源层的形貌和能级排列，从而提高了有机太阳能电池器件的效率。得益于NFA和三元策略的发展，迄今为止，有机太阳能电池的功率转换效率（PCE）已超过17.5％。该领域需要对基于NFA的三元OSC（TOSC）的最新进展进行全面回顾。在此，本综述主要关注最近两年中使用NFA材料的三元有机太阳能电池的最新研究。首先，总结并讨论了基于NFA的TOSC中的器件物理和常用活性材料。然后，回顾了最近报道的基于高性能NFA的TOSC。最后，提出了该领域的展望和未来的研究方向。