Understanding interface properties in 2D heterostructure FETs
arXiv:2012.01129 · doi:10.1088/1361-6641/aba287
Abstract
Fifteen years have passed since graphene was first isolated on the substrate from bulk graphite. During that period, 2D layered materials with intrinsic band gaps have been realized. Although many exciting results have been reported for both their fundamental physics and applications, the discussion of 2D electron device application to the future integrated circuit is still based on the expectation of the inherently high properties that 2D materials ideally possess. This review article focuses on the gate stack property, which is one of most important building blocks in the field effect transistor. Starting from the comparison of the 2D/SiO2 interface properties with the conventional SiO2/Si interface properties, recent advances in the studies of gate stack properties for bilayer graphene and MoS2 FETs are discussed. In particular, the advantages and disadvantages of the 2D heterostructures with 2D insulator of h-BN are emphasized. This review may provide conceptual and experimental approaches for controlling the 2D heterointerface properties.
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