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). |
(a) High-frequency C–V curves of all the MOS capacitors. Al 2p XPS spectra for (b) Al2O3/HfO2 sample and (c) NH3-Al2O3/HfO2 sample. (d) N 1s XPS spectra before and after NH3-plasma treatment on the stack dielectric of Al2O3/HfO2. |