Bis(diphenylamine)-Tethered Carbazolyl Anthracene Derivatives as Hole-Transporting Materials for Stable and High-Performance Perovskite Solar Cells

Three new hole-transporting materials (HTMs), composed of N-3,N-6-bis(di-4-anisylamino)-9H-carbazole and anthracene moieties, have been developed for perovskite solar cell (PSC) application. Two of the new HTMs have better hole mobility based on mixed ion perovskite of Cs(0.05)FA(0.79)MA(0.16)PbI(2.49)Br(0.51) and doped HTMs has and hole-extraction ability compared to spiro-OMeTAD. Accordingly, the best PSC better power conversion efficiency (18.65%) than the corresponding PSC based on doped spiro-OMeTAD (17.90%). Moreover, the PSCs based on these HTMs have negligible hysteresis and good temporal stability.