Band gap engineering of atomically thin two-dimensional semiconductors*

Project supported by the National Natural Science Foundation of China (Grant Nos. 11374092, 61474040, 61574054, and 61505051), the Aid Program for Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province, China, and the Science and Technology Department of Hunan Province, China (Grant No. 2014FJ2001).

Ge Cui-Huan, Li Hong-Lai, Zhu Xiao-Li, Pan An-Lian
       

(color online) (a) Top view of Mo W S monolayer and a side view of a unit cell.[65] (b) PL spectra of Mo W S monolayers with different W compositions x.[65] (c) Schematic diagram of a Mo W S photoresistor and a temporal switching cycle of the Mo W S photodetector under a 635 nm illumination.[68]