2007/08/13 by Youngki Yoon, Jing Guo · 2 citations
Materials Science · Physics and Astronomy · #Composite material #Condensed matter physics #Enhanced Data Rates for GSM Evolution #Graphene #Graphene research and applications #Leakage (economics) #Materials science #Nanotechnology #Non-equilibrium thermodynamics #Optoelectronics #Physics #Quantum and electron transport phenomena #Surface finish #Surface roughness #Thermal properties of materials #Transistor #Voltage #cond-mat.mes-hall
paper · pdf · doi:10.1063/1.2769764
published as Appl. Phys. Lett. 91, 073103 (2007)
openalex publication_date 2007/08/13 · arxiv created 2007/12/23 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The effects of edge irregularity and mixed-edge shapes on the characteristics of graphene nanoribbon transistors are examined by self-consistent atomistic simulations based on the nonequilibrium Green’s function formalism. The minimal leakage current increases due to the localized states induced in the band gap, and the on current decreases due to smaller quantum transmission and the self-consistent electrostatic effect in general. Although the ratio between the on current and minimal leakage current decreases, the transistor still switches even in the presence of edge roughness. The variation between devices, however, can be large, especially for a short channel length.