Comparative 1D optoelectrical simulation of the perovskite solar cell

The metal-halide perovskite solar cell has risen to the vanguard of photovoltaic research and offers the potential to merge low-cost fabrication with high-power conversion efficiency. Certainly, simulation along with experimental studies will contribute to a better understanding of the operation mechanism of PSC and the need to further improve device performance. In this study, the combinations of the optical transfer matrix method and electrical method based on the solar cell capacitance simulator (SCAPS) were used for 1D optoelectrical modeling of the planar PSC. In order to investigate the capability of this simple model, most of the related options such as absorption coefficient, optical reflection, defects, and interface trap were set. The comparison of the optoelectrical simulated EQE and JV curve of the CH3NH3PbI3 planar solar cell with the experimental ones showed that compared to the most only-electrical 1D modeling, the results are more similar to the experimental ones. However, this 1D model is not fully capable of much matching between the simulation and experimental results. By comparing the experimental and simulated results, the comparable VOC and JSC, as well as a difference in FF and PCE, are observed. In addition to the dark saturation current and ideality factor, the resistance losses and ionic emigration, which are not presented in this optoelectrical model, were introduced as the main factors for describing the differences in the values of the compared parameters.