Abstract Superacids are strong acids with an acidity higher than pure sulfuric acid. Recently, superacid treatment of monolayer transition metal dichalcogenide (TMDC) flakes, such as MoS 2 and WS , has shown a dramatic enhancement optical properties, photoluminescence (PL) intensity. The molecule is bis(trifluoromethane)sulfonimide (TFSI). In this review paper, we summarize discuss the recent w...
