Abstract:Interface modification has been proved to be an effective method to improve the performance of perovskite solar cells (PSCs). In this paper, tetramethylammonium hexafluorophosphate (TMAPF6) is employed to modify the interface of SnO2/perovskite. Fluorine (F) in PF6− will fill the oxygen vacancy by interacting with Sn in SnO2. Meanwhile, TMA+ and PF6− in TMAPF6 will effectively fill the MA+ and I− vacancy in the interface. TMAPF6 modification enhances the hydrophobicity of the SnO2 surface, promotes the growth … Show more
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