Off-Stoichiometric Methylammonium Iodide Passivated Large-Grain Perovskite Film in Ambient Air for Efficient Inverted Solar Cells

• Published in: ACS applied materials & interfaces Vol. 11; no. 43; pp. 39882 - 39889
• Main Authors: Liao, Kejun, Yang, Jin-an, Li, Chengbo, Li, Tingshuai, Hao, Feng
• Format: Journal Article
• Language: English
• Published: American Chemical Society 30.10.2019
• Subjects: humidity; hot-casting; excess MAI; PbI2 enrichment

Hot-casting is a promising technique of depositing high-quality organic–inorganic hybrid perovskite thin films with large crystal grain size. Here, we reported the that the crystallinity and grain size of perovskite films could be systematically tailored by modulating the stoichiometry of the precur...