Transport phenomena and conduction mechanism of single-walled carbon nanotubes (SWNTs) at Y- and crossed-junctions

Do-Hyun Kim; Jun Huang; Hoon-Kyu Shin; Somenath Roy; Wonbong Choi

doi:10.1021/nl061977q

Transport phenomena and conduction mechanism of single-walled carbon nanotubes (SWNTs) at Y- and crossed-junctions

Nano Lett. 2006 Dec;6(12):2821-5. doi: 10.1021/nl061977q.

Authors

Do-Hyun Kim¹, Jun Huang, Hoon-Kyu Shin, Somenath Roy, Wonbong Choi

Affiliation

¹ Department of Mechanical and Materials Engineering, Florida International University, Miami, Florida 33174, USA.

PMID: 17163712
DOI: 10.1021/nl061977q

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).

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.