Achieving High‐Quality Perovskite Films with Guanidine‐Based Additives for Efficient and Stable Methylammonium‐Free Perovskite Solar Cells
Wenwu Zhou,
Shuya Tai,
Yi Li
et al.
Abstract:Power conversion efficiencies (PCEs) of the methylammonium‐free (MA‐free) perovskite solar cells (PSCs) are constantly lagging behind those of the most extensively researched triple cation mixed PSCs due to their subpar perovskite films. Here, two guanidine‐based passivation agents are proposed, that are, sulfaguanidine (S‐Gua) and 1‐acetylguanidine (A‐Gua) that can be applied to optimize the film quality of MA‐free perovskite for minimizing the efficiency discrepancy between the two types of PSCs. Through str… Show more
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