Study of Oxidation States with Heating on Charge Transport of the Graphene Nanoribbon

作者：Santos de Sousa Mario Edson; dos Reis Marcos Allan L; Del Nero Jordan^*

来源：Journal of Nanoscience and Nanotechnology, 2016, 16(1): 321-326.

DOI：10.1166/jnn.2016.10678

• Oxidized Graphenenanoribbon
• Threshold Voltage
• Negative Differential Resistance
• Nanoconstriction

In this paper, we present a study based on extended Huckel (ETH) and the Green function of the electron transport in a graphenenanoribbon with a nanopore oxidized in the middle. We consider several types of oxidation:hydroxyl, carboxyl and ketone groups adsorbed in edges, pore and surface of the riddon. The results indicate that nanoribbons with medium and high oxidation are more thermally stable than the low oxidation nanoribon that shows greater sensitivity at 120 degrees C. Finally, Ohmic and Negative Differential Resistance (NDR) were obtained from I(V) curves, thus was possible determine the current peaks and threshold voltages (V-Th1 < V-Th2 < V-Th3 < V-Th4), which correspond to quantum transport of the nanoribbon not oxidized, high-oxy, med-oxy and low-oxy, respectively, so creating two nanoconstrictions as well as two regions of quantum confinement.

• 出版日期2016-1