Study On The Skeleton Layer Of Mesoscopic Perovskite Solar Cells

With the successful transformation of the two industrial revolutions,the human society has undergone significant changes,while people’s demand for energy is increasing.However,the fossil energy stored on the earth can no longer meet human needs.All energy sources on the earth are fundamentally derived from the sun.Therefore,in order to achieve sufficient energy supply,we must start from the source of the sun.Every year,the Earth receives tens of thousands power of energy from the sun.If solar energy can be fully utilized,it will greatly reduce the pressure on fossil energy supply.Currently,scientific researchers have successfully converted solar energy into electrical energy using semiconductor materials to prepare solar cells,achieving the effective utilization of solar energy.In the third generation solar cells,perovskite solar cells have developed rapidly due to their superiorphotoelectric performance,Among the perovskite solar cells,printable mesoscopic carbon based perovskite solar cell devices have attracted widespread attention from researchers due to their low cost and low requirements for the preparation environment.Both titanium dioxide and tin dioxide are excellent electron transport layer materials for perovskite solar cells.In this paper,three-dimensional inverse opal titanium dioxide and three-dimensional inverse opal tin dioxide were prepared using the templates of polystyrene spheres of different sizes,and they were used as electron transport layer frameworks in printable mesoscopic perovskite solar cells.The effects of different electron transport layer materials and different sizes of polystyrene microspheres on the photoelectric performance of the solar cell were investigated.It was found that the salor cells with three-dimensional inverse opal titanium dioxide as the electron transport skeleton layer achieves a photoelectric conversion efficiency of2.43%,and has a high open circuit voltage;the solar cells with three-dimensional inverse opal tin dioxide as the electron transport skeleton layer obtains a photoelectric conversion efficiency of 1.06% and high short-circuit current.