Enhanced photovoltaic properties of perovskite solar cells by TiO2 homogeneous hybrid structure

摘要

In this paper, we fabricated a TiO₂ homogeneous hybrid structure for application in perovskite solar cells (PSCs) under ambient conditions. Under the standard air mass 1.5 global (AM 1.5G) illumination, PSCs based on homogeneous hybrid structure present a maximum power conversion efficiency of 5.39% which is higher than that of pure TiO₂ nanosheets. The enhanced properties can be explained by the better contact of TiO₂ nanosheetsanoparticles with CH₃NH₃PbI₃ and fewer pinholes in electron transport materials. The advent of such unique structure opens up new avenues for the future development of high-efficiency photovoltaic cells.