Ambient processed (110) preferred MAPbI3thin films for highly efficient perovskite solar cells
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Organic-inorganic hybrid perovskites have attracted intensive attention due to their exceptional optoelectronic properties. With a massive leap of efficiency from 3.8% to 25.2% in a decade, perovskite solar cells (PSCs) have been considered the most promising next-generation photovoltaic technology. Recently, the methylamine (MA)-gas-mediated approach has been widely studied for preparing precursor solutions to deposit large scale perovskite thin films for PSCs. In this article, high-quality MAPbI3films were spin-coated using a MA-gas-mediated perovskite precursor. The deposited MAPbI3films showed larger crystal grains, lower surface roughness, and a preferred (110) crystal orientation compared to the films deposited by the Lewis adduct method. Planar PSC devices fabricated using the MA-gas-mediated precursor showed a high efficiency of 19.28% and a higher average efficiency than the devices fabricated by the Lewis adduct method.
Guo, Rui; Dahal, Biplav; Thapa, Arun; Poudel, Yuba Raj; Liu, Yunyan; and Li, Wenzhi, "Ambient processed (110) preferred MAPbI3thin films for highly efficient perovskite solar cells" (2021). All Faculty. 400.