Carbon-Based Electronics: A Computational Study

Carbon-based materials such as carbon nanotubes (CNTs) and Graphene nano-ribbons (GNRs) have been extensively studied in recent years due to their exceptional electronic, opto-electronic, and mechanical properties. We employed the non-equilibrium Green’s function (NEGF) formalism to analyze the electronic and optoelectronic properties of CNTand GNRbased devices numerically. The steady-state and the dynamic response of carbon nanotube-based transistors are studied for a wide range of electron-phonon interaction parameters. The direct band gap and the tuneability of the relatively narrow band gap with the tube diameter or ribbon’s width render them as suitable candidates for optoelectronic devices, especially for infrared applications. The performances of CNTs and GNRbased infra-red photo detectors are analyzed.