Intrinsic Current−Voltage Characteristics of Graphene Nanoribbon Transistors and Effect of Edge Doping
نویسندگان
چکیده
منابع مشابه
Intrinsic current-voltage characteristics of graphene nanoribbon transistors and effect of edge doping.
We demonstrate that the electronic devices built on patterned graphene nanoribbons (GNRs) can be made with atomic-perfect-interface junctions and controlled doping via manipulation of edge terminations. Using first-principles transport calculations, we show that the GNR field effect transistors can achieve high performance levels similar to those made from single-walled carbon nanotubes, with O...
متن کاملComputational Model of Edge Effects in Graphene Nanoribbon Transistors
Address correspondence to guoj@ufl .edu ABSTRACT We present a semi-analytical model incorporating the effects of edge bond relaxation, the third nearest neighbor interactions, and edge scattering in graphene nanoribbon fi eld-effect transistors (GNRFETs) with armchair-edge GNR (AGNR) channels. Unlike carbon nanotubes (CNTs) which do not have edges, the existence of edges in the AGNRs has a sign...
متن کاملEdge Effects on the pH Response of Graphene Nanoribbon Field Effect Transistors
We report the pH response enhancement of the electrolyte-gated graphene field effect transistors by controllably introducing edge defects. An average improvement of pH response from 4.2 to 24.6 mV/pH has been observed after downscaling the pristine graphene into graphene nanoribbon arrays with electron beam lithography (EBL) and oxygen plasma. We attribute the improved pH response in graphene n...
متن کاملA computational study of ballistic graphene nanoribbon field effect transistors
A self-consistent solution of Schrödinger equation based on Green’s function formalism coupled to a two-dimensional Poisson’s equation for treating the electrostatics of the device is used to simulate and model the ballistic performance of an armchair edged GNRFET. Our results take into account interactions of third nearest neighbors, as well as relaxation of carbon–carbon bonds in the edges of...
متن کاملTheoretical study of graphene nanoribbon field-effect transistors
Carbon nanoribbons (CNRs) have been recently experimentally and theoretically investigated for different device applications due to their unique electronic properties. In this work, we present a theoretical study of the electronic structure, e.g. bandgap and density of states, of armchair carbon nanoribbons, using both, simple analytical solutions and numerical solutions based on a πorbital tig...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nano Letters
سال: 2007
ISSN: 1530-6984,1530-6992
DOI: 10.1021/nl070133j