title: Transport phenomena and conduction mechanism of single-walled carbon nanotubes (SWNTs) at Y- and crossed-junctions.
abstract: This letter illustrates the transport phenomena associated with single-walled carbon nanotube (SWNT) junctions of Y- and cross-configurations. Localized gating effect exhibited by Y- and crossed-junctions suggests the resemblance of their electrical characteristics with ambipolar and unipolar p-type FETs, respectively. Temperature dependence of the I-V characteristics reveals that the conduction mechanism in the said SWNT junctions is governed by thermionic emission at temperatures above 100 K and by tunneling at T < 100 K. In-depth analysis of current transport through the crossed- and Y-junction SWNTs is significant in view of their predominant influence on the electrical performance of carbon nanotube networks (CNT-mat).
authors.affiliation: Department of Mechanical and Materials Engineering, Florida International University, Miami, Florida 33174, USA.
authors.forename: Do-Hyun
authors.initials: DH
authors.lastname: Kim
authors.forename: Jun
authors.initials: J
authors.lastname: Huang
authors.forename: Hoon-Kyu
authors.initials: HK
authors.lastname: Shin
authors.forename: Somenath
authors.initials: S
authors.lastname: Roy
authors.forename: Wonbong
authors.initials: W
authors.lastname: Choi