Commercial available carbon paste was screen-printed instead of both the expensive hole transport materials (HTM) and noble metal electrode, and the fully-air processed perovskite solar cells based on Al-doped TiO2 nanorods arrays was fabricated and demonstrated the enhanced photo-electronic conversion efficiencies. Study show that aluminum doping changes the flat band of TiO2 nanorods and influence the open voltage. Electrochemical impedance spectroscopy shows that the resistance of the Al-doped TiO2 nanorods devices using commercial available carbon instead of HTM and noble metal electrode is higher than that of the un-doped devices, resulting in slower electron recombination rates, longer electron lifetimes and higher energy conversion efficiencies. Al-doped perovskite devices based on commercial available carbon achieve a PCE of 6.08% in ambient atmosphere, which is 19% higher than that of the undoped sample. This method greatly simplifies the process of the perovskite solar cell fabrication and opens a door toward the cheap and stable and printable solar cell based on commercial available carbon.