Temperature dependent transport study of a single-wall carbon nanotube network

Jongseung Hwang, Jung Hyun Oh, Maeng Ho Son, Doyeol Ahn, Hee Tae Kim, Sung Woo Hwang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We report the temperature dependence of transport properties of SWCNT network FET devices. The nonlinear ISD-VSD characteristics become linear as increasing temperature because of more diffusive carriers at higher temperature. Zero-bias conductance data is calculated and fitted with simple power-law formula, G∝Ta. We obtained two different exponent values of 0.064 and 0.70 from the temperature range from 4.6 K to 40 K, and from 40 K to 295 K respectively. The power-law exponent at high temperature range is consistent with previous studies. However, unusual small power-law exponent at low temperature is attributed to the network junctions, which are disturbing 1D transport in the network structure.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - 29th International Conference, ICPS 29
Pages339-340
Number of pages2
DOIs
StatePublished - 2009
Event29th International Conference on Physics of Semiconductors, ICPS 29 - Rio de Janeiro, Brazil
Duration: 27 Jul 20081 Aug 2008

Publication series

NameAIP Conference Proceedings
Volume1199
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference29th International Conference on Physics of Semiconductors, ICPS 29
Country/TerritoryBrazil
CityRio de Janeiro
Period27/07/081/08/08

Keywords

  • Carbon nanotube
  • Conductance
  • Electrical transport
  • Network

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