Simulation Design And Photovoltaic Performance Research Of New Type Perovskite Solar Cell

Methylamine lead halide perovskite solar cells have attracted a great deal of research interest in recent years,which with the characteristics of high conversion efficiency,low cost and simple preparation technology.However,some factors limited the wide application of this technology,such as the environment threat coming from toxic lead element containing in perovskite solar cells,high temperature preparation of electronic transport layer TiO2 and the expensive hole transport layer Spiro-OMeTAD.In this study,we used one-dimensional device simulation method to design and analyze lead-free tin-based perovskite solar cells,P-I-N type all-perovskite solar cells and perovskite solar cells with charge transfer layer free.The main contents of this article are as follows:First of all,the lead-free tin-based perovskite solar cells were designed and the effects of various parameters on the performance were analyzed.The simulation indicate that the lead-free tin-based perovskite solar cells would have equal or even higher efficiency than that lead-based by further optimizing the parameters and improving the fabrication process,which provided a method to solve the energy problem in an environment friendly way.Secondly,a kind of P-I-N type all-perovskite solar cells were designed because of perovskite material has good ambipolar charge transport properties.The effect of doping concentration,layer thickness and energy band matching were studied on the photo-voltaic properties.It was found that energy band matching can realize current match and high open circuit voltage problems in tandem solar cell design,broaden the absorption spectrum and reduce recombination rate.The solar cell performance has improved significantly.Finally,perovskite solar cells with hole transport free were designed.The effect of perovskite layer doping concentration,band gap and layer thickness were analyzed on the performance of the cells,and the efficiency of the free of charge transport perovskite solar cells was improved by adjusting these parameters.