 The use of a ternary donor alloy strategy was employed to optimize the energy levels of the charge transfer states in organic solar cells, resulting in a significant reduction of the energy loss associated with charge generation. This optimization led to an increase in both the open circuit voltage and the power conversion efficiency of the organic solar cell, while maintaining its short circuit current density and fill factor. This article was authored by Gene Wa Gao, Na Yu, Ji Ha Chen, and others.