Dielectrics for 2-D Electronics: From Device to Circuit Applications

2-D electronics is an important pathway to develop advanced monolithic integrated circuits. Due to the nature of the van der Waals force between 2-D materials and dielectrics, it is a challenge to fabricate high-quality dielectrics for 2-D materials. Here, we first review the situation of traditional insulators for 2-D field-effect transistors (FETs). The progress made in the development of new dielectric materials and advanced preparation methods is summarized. Moreover, we also discuss the application of insulators in novel device structures, arrays, and circuits. Finally, we present a perspective on the promising pathways of insulators for 2-D FETs and obstacles to the commercial application of 2-D electronics.