Preparation of High-efficiency Perovskite/Crystalline Silicon Laminated Solar Cells by Metformin Hydrochloride Assisted Crystallization
In the construction of perovskite solar cells,perovskite active layer plays a central role,and its film quality directly affects the overall efficiency of the device.We propose a novel strategy using metformin hydrochloride(MET)to assist crystal growth.Specifically,we added a trace amount of metformin hydrochloride to an organic cationic solvent to enhance the crystallinity of the perovskite,thereby contributing to the formation of high-quality perovskite films.Finally,we obtained a solar cell with an optimal photoelectric conversion efficiency of 29.39%.
metformin hydrochloridecrystallization aidgrain enlargementperovskite/silicon tandem solar cells
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