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Perovskite solar cells have attracted tremendous attention in recent years due to the high device performance and the unique optoelectronic properties of perovskite materials.Charge carrier balance is critical for high performance perovskite solar cells.To improve the balance,charge carrier transport process can be manipulated by interface engineering.Here,we report the solvent-treated PEDOT:PSS and additive-modified PCBM as the hole and electron selective contacts,respectively,resulting in accelerated and balanced charge carrier transport within the device.