Effect of defects on high efficient perovskite solar cells

Abstract

Abstract The organic-inorganic hybrid halide perovskite solar cell has been studied theoretically in this paper. For the validation cases, an experimental case is used for comparison with our simulation results, and good agreement was achieved between them. Here, the effect of defect properties such as defect density, defect position, and capture cross-section for electron and hole in the perovskite layer were studied. The results show that the deep defects (near to the center of perovskite band gap) are identified as harmful defects due to the high Shockley-Read-Hall recombination rate. In high defect density, the power conversion efficiency (PCE) dramatically reduced. The same behavior is observed for the electrons-holes capture cross-section. Finally, we classified harmful and benign defects in perovskite solar cells.