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Throughout the years, the range of candidate materials for solar cells has been very limited due to the dominant role of fullerene materials. The inherent defects in fullerenes result in high synthesis costs, a low absorption coefficient, and other issues related to instability; therefore, the future of fullerene materials does not look very promising. Developing non-fullerene materials has become the only viable path forward. Recently, Dutch and Spanish scientists have jointly discovered that phthalocyanine molecules can be used as organic solar acceptor materials, claiming that they have the potential to challenge the dominance of fullerene materials. Four subphthalocyanine molecules with substituents on different axes were designed and synthesized as electron acceptor materials. Using subphthalocyanines as acceptors, the solar photovoltaic conversion efficiency achieved exceeded 4%; all these findings seem to indicate that subphthalocyanine molecules will play an important role as new types of acceptor materials in future organic solar cells. Changing the substituents along the axis can slightly alter the electron-accepting properties of the molecule, but it can greatly affect the aggregation and crystallization properties of the molecule. The four materials exhibited different performances in device characterization, among which SubPcCl6-Cl combined with the donor PTB7-Th yielded the best device results. The low photovoltaic conversion efficiency of solar energy has hindered the development of new energy sources. With this research, researchers claim that the conversion efficiency of solar energy will no longer be a problem in the future. The article is sourced from Molfind Web (www.molfind.cn)