Abbreviated Journal Title
Phys. Rev. B
Keywords
CHARGE-TRANSPORT; OXIDE SHEETS; GRAPHITE; TRANSPARENT; MECHANISM; DISORDER; FILMS; Physics, Condensed Matter
Abstract
We show that the low-temperature electron transport properties of chemically functionalized graphene can be explained as sequential tunneling of charges through a two-dimensional array of graphene quantum dots (GQDs). Below 15 K, a total suppression of current due to Coulomb blockade through a GQD array was observed. Temperature-dependent current-gate voltage characteristics show Coulomb oscillations with energy scales of 6.2-10 meV corresponding to GQD sizes of 5-8 nm, while resistance data exhibit an Efros-Shklovskii variable range hopping arising from structural-and size-induced disorder.
Journal Title
Physical Review B
Volume
83
Issue/Number
11
Publication Date
1-1-2011
Document Type
Article
Language
English
First Page
6
WOS Identifier
ISSN
1098-0121
Recommended Citation
Joung, Daeha; Zhai, Lei; and Khondaker, Saiful I., "Coulomb blockade and hopping conduction in graphene quantum dots array" (2011). Faculty Bibliography 2010s. 1447.
https://stars.library.ucf.edu/facultybib2010/1447
Comments
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