Effect of structural compatibility of dye and hole transport material on performance of solid-state dye-sensitized solar cells

► High structural compatibility of dye and HTM enhances the regeneration of dye. ► P3HT can act as a hole conductor and co-sensitizer in an ss-DSC. ► Ultrathin CYC-B11/P3HT ss-DSC exhibits a power conversion efficiency of 3.66%.