Organic photovoltaic (OPV) materials, especially small molecule donor materials (SMDMs) have enormous potential to revolutionize the solar energy sector. However, to be a viable alternative to the polymer donor counterparts, SMDMs must have high power conversion efficiency (PCE). A large number of different SMDMs have been reported, which have crossed the 10% threshold of the PCE for commercialization. In this review, we present the SMDMs that have been developed in recent years capable of generating moderate to high-efficiency photovoltaic devices. The steady rise in the variety of materials and PCE values in recent years, point to a bright future for SMDMs as solar energy materials.

有机光伏（OPV）材料，尤其是小分子供体材料（SMDM）具有巨大的潜力，可以彻底改变太阳能行业。但是，作为替代聚合物供体的可行选择，SMDM必须具有高功率转换效率（PCE）。据报道，有许多不同的SMDM已经超过了PCE的10％的商业化门槛。在这篇评论中，我们介绍了近年来开发的能够产生中到高效光伏器件的SMDM。近年来，材料种类和PCE值的稳定增长表明，作为太阳能材料的SMDM有着光明的前景。