Single-gate bandgap opening of bilayer graphene by dual molecular doping.

Park, Jaesung; Jo, Sae Byeok; Yu, Young-Jun; Kim, Youngsoo; Yang, Jae Won; Lee, Wi Hyoung; Kim, Hyun Ho; Hong, Byung Hee et al. · Adv Mater · 2012

basic_science · Level V

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Abstract

Dual doping-driven perpendicular electric field with opposite directions remarkably increase the on/off current ratio of bilayer graphene field-effect transistors. This unambiguously proves that it is possible to open a bandgap with two molecular dopants (F4-TCNQ and NH2 -functionalized self-assembled monolayers (SAMs)) even in a single-gate device structure.

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