The significance of two-dimensional transistors beyond the silicon-based limit lies in solving multiple important challenges to realize high-performance two-dimensional transistors, which is an important milestone in the research of two-dimensional electronic devices and is of great scientific significance. As the "heart" of the information age, chips provide constant power for the development of big data and artificial intelligence. The speed of the chip has increased due to the miniaturization of transistors, and the current silicon-based chip is close to the physical limit of Moore's Law.

Two-dimensional semiconductor materials are considered to be the next "wind mouth" of the chip channel materials, this atomic-level thickness of the material has the advantages of ultrathin body, high mobility, etc. Due to the bottlenecks in contact resistance, gate dielectrics, etc., so far all the two-dimensional transistors realized performance can not be comparable to the industry's advanced silicon-based transistors. The study of 2D transistors beyond the silicon-based limit is of great significance.