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) Crystal structure of the ReX compound.[86] (b) Absorption spectrum of ReS , ReSSe, and ReSe .[86] (c) Typical optical image of a ReSSe flake with regions of different thicknesses. Scale bar: 10 μm.[86] (d) curve of a ReSSe thin-flake transistor with a thickness of about 3 nm.[86] (e) Band structures of Nb Re S systems (x = 0.5).[87] (f) Derived absorbance along in-plane directions.[87]