Temperature-dependent charge transport in TiO2-multiwalled carbon nanotube composites

Seul Gi Seo, Woo Hyun Nam, Young Soo Lim, Won Seon Seo, Yong Soo Cho, Jeong Yong Lee

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Charge transport properties of TiO2-multiwalled carbon nanotube (MWCNT) composites were investigated. The TiO2-MWCNT composites were fabricated by spark plasma sintering of a mixture of TiO2 nanoparticles and MWCNTs. Temperature-dependent electrical conductivities of the composites reveal that the percolation threshold for the MWCNT network is affected by temperature, and that the activation process for electron hopping is also influenced by the percolation. Based on this interdependence, an integrated charge transport model, including both the effects of the percolation and the electron hopping, is proposed for this system.

Original languageEnglish
Pages (from-to)688-693
Number of pages6
JournalCarbon
Volume67
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Multiwalled carbon nanotubes (MWCN)
Charge transfer
Composite materials
Spark plasma sintering
Electrons
Transport properties
Temperature
Chemical activation
Nanoparticles

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

Cite this

Seo, Seul Gi ; Nam, Woo Hyun ; Lim, Young Soo ; Seo, Won Seon ; Cho, Yong Soo ; Lee, Jeong Yong. / Temperature-dependent charge transport in TiO2-multiwalled carbon nanotube composites. In: Carbon. 2014 ; Vol. 67. pp. 688-693.
@article{b6dbc13c0f494d4e8a3ca6f4372b5173,
title = "Temperature-dependent charge transport in TiO2-multiwalled carbon nanotube composites",
abstract = "Charge transport properties of TiO2-multiwalled carbon nanotube (MWCNT) composites were investigated. The TiO2-MWCNT composites were fabricated by spark plasma sintering of a mixture of TiO2 nanoparticles and MWCNTs. Temperature-dependent electrical conductivities of the composites reveal that the percolation threshold for the MWCNT network is affected by temperature, and that the activation process for electron hopping is also influenced by the percolation. Based on this interdependence, an integrated charge transport model, including both the effects of the percolation and the electron hopping, is proposed for this system.",
author = "Seo, {Seul Gi} and Nam, {Woo Hyun} and Lim, {Young Soo} and Seo, {Won Seon} and Cho, {Yong Soo} and Lee, {Jeong Yong}",
year = "2014",
month = "1",
day = "1",
doi = "10.1016/j.carbon.2013.10.060",
language = "English",
volume = "67",
pages = "688--693",
journal = "Carbon",
issn = "0008-6223",
publisher = "Elsevier Limited",

}

Temperature-dependent charge transport in TiO2-multiwalled carbon nanotube composites. / Seo, Seul Gi; Nam, Woo Hyun; Lim, Young Soo; Seo, Won Seon; Cho, Yong Soo; Lee, Jeong Yong.

In: Carbon, Vol. 67, 01.01.2014, p. 688-693.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Temperature-dependent charge transport in TiO2-multiwalled carbon nanotube composites

AU - Seo, Seul Gi

AU - Nam, Woo Hyun

AU - Lim, Young Soo

AU - Seo, Won Seon

AU - Cho, Yong Soo

AU - Lee, Jeong Yong

PY - 2014/1/1

Y1 - 2014/1/1

N2 - Charge transport properties of TiO2-multiwalled carbon nanotube (MWCNT) composites were investigated. The TiO2-MWCNT composites were fabricated by spark plasma sintering of a mixture of TiO2 nanoparticles and MWCNTs. Temperature-dependent electrical conductivities of the composites reveal that the percolation threshold for the MWCNT network is affected by temperature, and that the activation process for electron hopping is also influenced by the percolation. Based on this interdependence, an integrated charge transport model, including both the effects of the percolation and the electron hopping, is proposed for this system.

AB - Charge transport properties of TiO2-multiwalled carbon nanotube (MWCNT) composites were investigated. The TiO2-MWCNT composites were fabricated by spark plasma sintering of a mixture of TiO2 nanoparticles and MWCNTs. Temperature-dependent electrical conductivities of the composites reveal that the percolation threshold for the MWCNT network is affected by temperature, and that the activation process for electron hopping is also influenced by the percolation. Based on this interdependence, an integrated charge transport model, including both the effects of the percolation and the electron hopping, is proposed for this system.

UR - http://www.scopus.com/inward/record.url?scp=84892814971&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84892814971&partnerID=8YFLogxK

U2 - 10.1016/j.carbon.2013.10.060

DO - 10.1016/j.carbon.2013.10.060

M3 - Article

AN - SCOPUS:84892814971

VL - 67

SP - 688

EP - 693

JO - Carbon

JF - Carbon

SN - 0008-6223

ER -