Zhijun Ning1
ShanghaiTech University1
The development of high performance lead free perovskite solar cells (PSCs) is important to address the environmental concern of heavy metal lead. In recent years, tin perovskite solar cell (TPSCs) is developing quickly and emerging as a promising candidate for high efficiency lead free PSCs. Meanwhile, the narrow bandgap of tin perovskite solar cells enables it potential to be used for the fabrication of tandem solar cells. In this presentation, I will summarize recent work of our group about tin perovskite solar cells, including the introduction of low-dimensional structure, crystal growth kinetic control to manipulate its nanostructure and orientation, as well as device structural engineering to reduce interface carriers recombination. Based on these efforts, the highest efficiency of tin perovskite solar cells is up to 14.6% that is certified in an independent agency. In addition, the fabrication of low dimensional inorganic tin perovskite solar cells will be introduced, as well as the construction of bilayer structure on film surface to reduce carriers recombination.