Mixed Solvent as a Critical Factor in Optimizing Phase Separation of All Small Molecule Organic Solar Cells

For all small molecule organic solar cells (ASM OSCs), morphology control is still considered a key factor in determining the overall performance. In this study, the morphology of the active layer has been regulated by utilizing a mixed solvent method to improve the performance of the devices. The power conversion efficiency was enhanced from 1.13% to 10.39% for the BTR:Y6 system and from 1.29% to 11.34% for the BTR:N3 system. Consequently, a...