Abstract
Silicene, a monolayer of silicon atom assembling in a honeycomb lattice, has attracted more and more attention due to its outstanding electronic properties. The recently successful synthesis of silicene on several metal surfaces takes a big step towards the utilization of silicene in the future microelectronic devices. On the roadmap for the applications of silicene, two critical issues have to be addressed: (1) how to improve the quality of silicene; (2) how to preserve the extraordinary electronic properties of silicene. These two problems can be solved by deeply understanding the substrate effect on silicene. In this review, we systematically discuss the substrate effect on the atomic structure and electronic properties of a silicene sheet as well as the growth behavior of silicene on Ag surface, which are important for both fabrication and application of silicene.
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