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%.
关键词
二甲双胍盐酸盐/辅助结晶/增大晶粒/钙钛矿/晶硅叠层太阳能电池
Key words
metformin hydrochloride/crystallization aid/grain enlargement/perovskite/silicon tandem solar cells
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