Study On Performance Control Of PEDOT:PSS Doping On Planar Perovskite Solar Cells

Energy is of great importance to the sustainable development of mankind.With the increasing reserves of non-renewable energy sources in coal,oil and natural gas,solar energy has become the object of new energy development.It has attracted the attention of the whole world because of its advantages such as reproducibility,safety,cleanliness and low cost.In 2009,perovskite solar cells turned out to become a new member of the solar cell family.Initially the perovskite solar cell conversion efficiency is very low,with the technology continues to mature and continuous innovation,the current organic metal halide perovskite solar certification efficiency has reached 22.1%.Perovskite solar cells not only low production costs,and photoelectric conversion efficiency has a very large room for improvement,is the current photovoltaic star devices.In this paper,the effects of molybdenum oxide(MoOx)and silver nanoparticles(Ag NPs)on the hole-transport interface of the perovskite solar cells were studied by means of experimental study.As well as the overall performance of the battery.The research is as follows:1 ? The effect of molybdenum oxide doped with PEDOT: PSS(3,4-ethylenedioxythiophene:polyphenylene sulfide)as a hole transporting material on the performance of planar perovskite solar cells was studied.The PEDOT: PSS-MoOx mixed solution was prepared by dissolving MoOx powder into PEDOT: PSS solution as the hole transport material of planar perovskite solar cell.Compared to undoped cells,PEDOT: PSS-MoOx batteries show a significant improvement in conversion efficiency,open circuit voltage and fill factor.The morphology of the perovskite layer indicates that the coverage of the film has been improved,mainly due to the introduction of MoOx nanodots in the perovskite substrate.PEDOT:PSS-MoOx-doped battery devices achieve more than 15% photoelectric conversion efficiency.In addition,we will also be from the market to buy MoO3 doped to PEDOT: PSS and our synthesis of MoOx contrast,doped Mo Ox devices in the conversion efficiency of the performance is more excellent.(Mo Ox,x <3)prepared by sol-gel method was used as the hole transport material in organic solar cells,which was used to solve the problem of low solubility of MoO3 in devices.Is one of the best ways to improve battery efficiency.2?The effect of the amount of silver nanoparticles incorporated into PEDOT: PSS as the hole transport material on the performance of the planar perovskite solar cell was studied.The PEDOT: PSS-Ag NPs mixed solution was prepared as a hole transport material for planar perovskite solar cells by dissolving Ag NPs into PEDOT: PSS solution.Compared with PEDOT: PSS as the hole transport material,it was found that the PEDOT: PSS-Ag NPs were significantly improved in filling factor and conversion efficiency.The PEDOT: PSS-Ag NPs can optimize the contact between the hole transport layer and the perovskite layer,reduce the defects and reduce the series resistance.The light absorption enhancement of the perovskite film is due to the increase in the absorbance of the hole transport layer after the introduction of the silver nanoparticles,and the defects of the film are reduced and the coverage is improved.The inter-layer resistance reduction of the device reduces the obstruction to the charge transport,thus improving the photoelectric conversion efficiency of the solar cell.