Yamaçlı, Serhan2025-02-242025-02-2420140927-02561879-080110.1016/j.commatsci.2013.09.0152-s2.0-84888288322https://doi.org/10.1016/j.commatsci.2013.09.015https://hdl.handle.net/20.500.14440/891Investigation of the conductance properties of metal-graphene contacts is essential for the future nano-electronics technology. In this study, we focus on the conductance mechanism and the voltage-dependent transport properties of both p-type and n-type graphene-metal contacts. Copper and gold are chosen as the contact metal for n-type and p-type doped graphene-metal interface, respectively. Utilizing first principles quantum mechanical calculations with density functional theory in conjunction with Green's function formalism, transmission spectra of graphene-metal contacts and the voltage-dependent variations of the current and the resistance are obtained. Finally, it is shown that obtained resistance-voltage behaviours of graphene-metal contacts are in consistent with the results reported in the literature and the voltage-dependency of the contact resistance has to be taken into consideration for the nanoscale circuit design process. (C) 2013 Elsevier B. V. All rights reserved.eninfo:eu-repo/semantics/closedAccessGrapheneMetal contactConductanceTransmission spectrumArticle611Q160781WOS:000326940300086Q2