Guidelines for the Design of High-Performance Perovskite Based Solar Cells

In the aim of finding the optimal solar cell structure which allows better efficiency, stability and reduced cost, a general study of a Methyl Ammonium lead Iodide CH 3 NH 3 PbI 3 based perovskite solar cell is made. Three different electron transport material compounds ETMs; TiO 2 , ZnO and SnO 2 are comparatively studied considering the same hole transport material HTM, Spiro-OMeTAD. The photovoltaic parameters, i.e. the open circuit voltage (V oc ), the short circuit current (J sc ) and the power conversion efficiency (PCE) are performed considering the ETM layers thicknesses, and the defect densities in both interfaces ETM/Perovskite and Perovskite/HTM. It is found that solar cell with SnO 2 present the highest PCE for almost all configurations. Finally, the optimized cell is simulated with different organic and inorganic HTMs such as PEDOT: PSS, Cul and CuSbS 2 .