Improved performance of back-gate MoS2 transistors by NH3-plasma treating high-k gate dielectrics*

Project supported by the National Natural Science Foundation of China (Grant No. 61774064).

Chen Jian-Ying1, Zhao Xin-Yuan2, Liu Lu2, Xu Jing-Ping2, †
       

Schematic diagram of the back-gate MoS2 transistor structure: (a) HfO2 gate dielectric, (b) Al2O3/HfO2 gate dielectric, (c) thickness of MoS2 film corresponding to different colors under optical microscope, (d) MoS2 flake selected to fabricate transistor with L of 2 μm.