High Efficiency (41.85) of Br Perovskites base solar cells with ZnO and TiO2 comparable study as ETM

Abstract

Due to its ease of processing, low production costs, superb light-harvesting characteristics, and high efficiency, organic-inorganic perovskite solar cells have attracted great attention in the photovoltaic research community in recent years, making it more preferable than other existing solar cell materials. Lead-based perovskites (CH3NH3PbX3, X=Cl, I, Br) solar cells have recently achieved high efficiency of ~19.3 percent, well exceeding most thin-film and organic solar cells’ efficiencies despite its potential for photovoltaic applications, organometal halide perovskites have attracted considerable attention recently and are also considered as promising materials in light-emitting devices. In particular, photovoltaic devices with efficiencies above 20 percent have been prepared using organometal halide perovskites as absorbent materials in the last few years A planar. The standard design for a planar hetero-junction perovskite-based solar cell is: Back electrode/Hole Transport Material (HTM)/Perovskite absorber / Electron Transport Material (ETM) / Transparent electrode. The hole mobility and acceptor concentration of the HTM, interface trap density, and work-function of back contact metal have shown a significant influence on the device performance. Also with these good merits.In this research, two types of ETM (TiO2and ZnO) were used with the Perovskite CH3NH3PbBr3and was found that the use of TiO2 with perovskite achieved high efficiency of 41.85% while the use of ZnO with perovskites we obtained an efficiency 17.67%. Method/Analysis: Solar cell architecture assessment is conducted using Solar Cell Power Simulator(SCAPS). This is a computer-based software tool and is well equipped to research photovoltaic structures with barriers to homo and heterojunctions, multi-junctions, and Schottky. This model optimizes various parameters such as thickness, absorber layer density, Electron Transport Material (ETM),Density of accepter and donor (ND and NA), and Hole Transport Material (HTM) doping concentrations. Achievement and simulates electrons and holes based on the Poisson’s and continuity equation The effected thickness of CH3 NH3 PbBr3 different from 0.05μm to 1.2μm and the finest results are observed at 0.05 μm.