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A two-step deposition technique is used for preparing CH3NH3PbI3 perovskite solar cells. Using ZrO2 and TiO2 as a mesoporous layer, we obtain an efficiency of 10.8% and 9.5%, respectively, under 1000 W m(-2) illumination. The ZrO2 based solar cell shows higher photovoltage and longer electron lifetime than the TiO2 based solar cell.
Michael Graetzel, Shaik Mohammed Zakeeruddin, Felix Thomas Eickemeyer
Kevin Sivula, Jun Ho Yum, Parnian Ferdowsi
Christophe Ballif, Alessandro Francesco Aldo Virtuani, Luca Gnocchi