摘要： The major limitation of organic-inorganic perovskite solar cells performance is the existence of numerous charged defects at the absorption layer surface, which caused charge carrier recombine depravation. These defects have remarkable influence on the charge extraction, which further caused the instability of device and induce severe hysteresis. Here, three low-cost anion-doping conductive fullerene derivatives, fullerene bis(phenethyl alcohol) malonate (FMPE-I), fullerene bis(ethylenediamine) malonamide (FEDA-I), and fullerene bis(propanediamine) malonamide (FPDA-I), are developed for the first time as interfacial layers between a perovskite and phenyl-C61-butyric acid methyl ester (PCBM) in planar invert perovskite solar cells under mild solution fabrication. The constituent Lewis basic halides and the specific amide groups of conductive fullerene derivatives efficaciously heighten the chemical interaction between the perovskite and conductive fullerene derivatives since the iodide can combine with under-coordinated Pb2+ by electrostatic interaction and amide group can facilely combined with I by hydrogen bonding, improving the dual-passivation of perovskite defects. Moreover, due to the well-matched energy level of conductive fullerene derivatives and the high conductivity of the perovskite/interlayer film, the electron extraction capacity can be effectively enhanced. Consequently, superior optoelectronic properties are achieved with an improved power conversion efficiency of 17.63%, which is considerably higher than that of the bare PCBM based devices (14.96%), for the perovskite device with conductive interlayer treatment along with a negligible hysteresis. Moreover, hydrophobic conductive fullerene derivatives improve the resistance of device to moisture. The conductive fullerene derivative-based devices without encapsulation are maintained at 85% of the pristine power conversion efficiency value after storage in ambient conditions (25 oC temperature, 60% humidity) for 500h.