TY - JOUR
T1 - Two- to one-dimensional crossover in graphene quantum dot arrays observed in reduced graphene oxide nanoribbons
AU - Joung, Daeha
AU - Khondaker, Saiful I.
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014/6/9
Y1 - 2014/6/9
N2 - We investigate how the electron transport properties of graphene quantum dot (GQD) arrays transition from two dimensions (2D) to one dimension (1D) in lithographically defined reduced graphene oxide nanoribbons (RGONRs). From the low-temperature electron transport measurements of 200-, 100-, and 50-nm-wide RGONRs, we find that the energy barrier for charge transport increases with decreasing RGONR width in both the Coulomb blockade and the variable-range hopping regime. Different charge transport parameters for 200-nm RGONR are in agreement with 2D transport while these parameters show a gradual transition to 1D transport in 50-nm RGONR.
AB - We investigate how the electron transport properties of graphene quantum dot (GQD) arrays transition from two dimensions (2D) to one dimension (1D) in lithographically defined reduced graphene oxide nanoribbons (RGONRs). From the low-temperature electron transport measurements of 200-, 100-, and 50-nm-wide RGONRs, we find that the energy barrier for charge transport increases with decreasing RGONR width in both the Coulomb blockade and the variable-range hopping regime. Different charge transport parameters for 200-nm RGONR are in agreement with 2D transport while these parameters show a gradual transition to 1D transport in 50-nm RGONR.
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U2 - 10.1103/PhysRevB.89.245411
DO - 10.1103/PhysRevB.89.245411
M3 - Article
AN - SCOPUS:84902782086
VL - 89
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 24
M1 - 245411
ER -