Numerical Simulation and Performance Optimization of Perovskite Solar Cell

摘要

The organic-metal halide perovskite is emerging technology in photo voltaic solar cells. For any solar cell to get the significant efficiency depends on various design parameters such as material thickness, device architecture, doping concentration etc.. There are many solar cell simulation software which can be used to carry out simulation and thus optimization based on those parameters. Here for this research, we have used wxAMPS because it is freely available, simple, efficient and quite popular in solar cell research society. The software has been used to simulate for single junction as well as multijunction/tandem solar cell. Keeping external parameters constant (one-sun, AM1.5G solar radiation, 1000 w/m2 irradiation), numerical simulation and analysis of a perovskite solar cell with a single junction configuration of ETM/Perovskite/HTM and a tandem (double junction) configuration of ETM/Perovskite/HTM/Recombination layer/ ETM/Perovskite/HTM were carried out. In the proposed single junction configuration Zinc oxide (ZnO) was used as Electron Transport Material (ETM) as), mixed halide perovskite (CH3NH3PbI3--x Clx) was used as absorber material, and Copper thiocyanate (CuSCN) was used as Hole transport material (HTM). Then simulation of double junction tandem solar cell was performed. Tandem cells are solar cells made of multiple junctions with tunable absorbing materials, which aim to overcome the Shockley-Queisser limit of single junction solar cells. Recently, organic-inorganic hybrid perovskite solar cells have stirred enormous interest as ideal candidates for tandem solar cells, due to high open circuit voltage, relatively wide optical bandgap, and low temperature solution processibility. In this research a new architecture of perovskite/perovskite tandem solar cell was explored. In this architecture two different types of single junction perovskite solar cells were used for the tandem structure. ZnO/CH3NH3PbI 3--xClx/CuSCN solar cell was employed as a top cell and ZnO/MAPbBr3/MAPbI3/CuSCN was employed as bottom cell. The simulation results shows a significant enhancement in conversion efficiency when compared to individual single junction perovskite solar cells. These simulation results can help researchers to reasonably choose materials and optimally design high performance perovskite single and tandem/multijunction solar cells.