In this section, you can access to the latest technical information related to the FUTURE project topic.

Extenuated interlayer scattering in double-layered graphene/hexagonal boron nitride heterostructure

Interlayer carrier scattering hampers electrical conduction in two-dimensional layered nanostructures. Extenuated carrier scattering is observed in a double-layered graphene system with hexagonal boron nitride (h-BN) as an interposer. Raman spectrum shows signature peaks with enhanced sharpness as compared with that of bilayer graphene. The density functional theory simulation shows degenerate energy bands in the E-k dispersion. The decoupling of the two graphene monolayers is further confirmed by electrical conduction measurements. Improved carrier mobility is observed in the graphene/h-BN/graphene heterostructure as compared with exfoliated or randomly-stacked graphene bilayer, indicating preserved Fermi velocity. The demonstrated behavior in graphene/h-BN/graphene heterostructure suggests a pathway to preserve the excellent carrier transport of pristine graphene monolayer in a multi-channel configuration, leading to implementation of highly conductive 2D heterostructure systems.

» Author: Nikhil Jain, Fan Yang, Robin B. Jacobs-Gedrim, Xu Xu, M.P. Anantram, Bin Yu

» Reference: Carbon, Volume 126

» Publication Date: 01/01/2018

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