Abstract
Hybrid lead-halide perovskite solar cells (PSCs) are promising alternatives to silicon-based cells due to their high photovoltaic performance and low cost. We report herein fully printable perovskite solar cells with a mesoporous TiO2/Al2O3/C architecture in combination with mixed-halide MAPbI(3-x)Br(x) perovskites. A maximum conversion efficiency of 13.49% can be achieved with an increased open circuit voltage of 1.01 V, which is higher than the MAPbI3-based devices. A reduced anomalous hysteresis in the J-V curve measurement has been demonstrated in perovskite solar cells based on MAPbI2.4Br0.6 perovskite, which is directly linked to the characteristically slow kinetics measured through electrochemical impedance spectroscopy.
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