 Researchers developed alkyl-tailored YSMS and named YRCNF series with near-infrared absorption, different molecular crystallinity and self-assembly abilities, which led to the creation of organic solar cells, OSCs, with an active layer processed from halogen-free solvents and spin-coating free technologies that achieved a 19% efficiency. Additionally, ternary OSCs were developed that offer robust operating stability under MPP tracking and well-keep over 80% of the initial efficiency for even over 400 hours. This article was authored by Hiraue by Wajima, Wenyin Su, and others.