 Organic solar cells based on non-pholarine acceptors have been rapidly developed despite their low power conversion efficiency and short-term stability. To address this challenge, we integrated a wide-band gap-electron-denating polymer, PTZBIDF, with two acceptor molecules, L8B0 and Y6, featuring similar structures but different thermal and morphological properties. As a result, we achieved a promising efficiency of 18.26%, while also obtaining excellent long-term thermal stability under 85 degrees Celsius continuous heating. Our study suggests that the morphology of the film can be controlled by varying the weight ratio of L8B0, Y6, thereby reducing the energetic traps caused by thermal stress and improving the overall performance of the device. This article was authored by Kangin, Wen Kaishong, Feng Peng, and others.