Phonon-glass electron-crystals in ZnO-multiwalled carbon nanotube nanocomposites

Woo Hyun Nam, Bo Bae Kim, Young Soo Lim, Kyun Seong Dae, Won Seon Seo, Hyung-Ho Park, Jeong Yong Lee

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We propose a strategy for enhancing thermoelectric performance through the realization of a 'phonon-glass electron-crystal' (PGEC) by interface control using multiwalled carbon nanotubes (MWCNTs). By the consolidation of undoped ZnO nanoparticles with MWCNTs (0.5, 1, and 2 wt%) using spark plasma sintering, we fabricated the interface-controlled ZnO-MWCNT nanocomposites, in which ZnO grains were surrounded with a MWCNT network. Both single crystal-like charge transport (electron-crystal) and considerably reduced thermal conductivity (phonon-glass) were achieved simultaneously thanks to the beneficial effects of the MWCNT network, and this led to the enhancement of the thermoelectric figure of merit. We discussed these findings on PGECs in the ZnO-MWCNT nanocomposites from the viewpoint of interface control in detail, and our strategy may provide a promising way to the realization of PGEC in other hybrid thermoelectric materials.

Original languageEnglish
Pages (from-to)12941-12948
Number of pages8
JournalNanoscale
Volume9
Issue number35
DOIs
Publication statusPublished - 2017 Sep 21

Fingerprint

Multiwalled carbon nanotubes (MWCN)
Nanocomposites
Glass
Crystals
Electrons
Spark plasma sintering
Consolidation
Charge transfer
Thermal conductivity
Single crystals
Nanoparticles

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Nam, W. H., Kim, B. B., Lim, Y. S., Dae, K. S., Seo, W. S., Park, H-H., & Lee, J. Y. (2017). Phonon-glass electron-crystals in ZnO-multiwalled carbon nanotube nanocomposites. Nanoscale, 9(35), 12941-12948. https://doi.org/10.1039/c7nr03747c
Nam, Woo Hyun ; Kim, Bo Bae ; Lim, Young Soo ; Dae, Kyun Seong ; Seo, Won Seon ; Park, Hyung-Ho ; Lee, Jeong Yong. / Phonon-glass electron-crystals in ZnO-multiwalled carbon nanotube nanocomposites. In: Nanoscale. 2017 ; Vol. 9, No. 35. pp. 12941-12948.
@article{fb3197df49f142259eb0fd41f30516e8,
title = "Phonon-glass electron-crystals in ZnO-multiwalled carbon nanotube nanocomposites",
abstract = "We propose a strategy for enhancing thermoelectric performance through the realization of a 'phonon-glass electron-crystal' (PGEC) by interface control using multiwalled carbon nanotubes (MWCNTs). By the consolidation of undoped ZnO nanoparticles with MWCNTs (0.5, 1, and 2 wt{\%}) using spark plasma sintering, we fabricated the interface-controlled ZnO-MWCNT nanocomposites, in which ZnO grains were surrounded with a MWCNT network. Both single crystal-like charge transport (electron-crystal) and considerably reduced thermal conductivity (phonon-glass) were achieved simultaneously thanks to the beneficial effects of the MWCNT network, and this led to the enhancement of the thermoelectric figure of merit. We discussed these findings on PGECs in the ZnO-MWCNT nanocomposites from the viewpoint of interface control in detail, and our strategy may provide a promising way to the realization of PGEC in other hybrid thermoelectric materials.",
author = "Nam, {Woo Hyun} and Kim, {Bo Bae} and Lim, {Young Soo} and Dae, {Kyun Seong} and Seo, {Won Seon} and Hyung-Ho Park and Lee, {Jeong Yong}",
year = "2017",
month = "9",
day = "21",
doi = "10.1039/c7nr03747c",
language = "English",
volume = "9",
pages = "12941--12948",
journal = "Nanoscale",
issn = "2040-3364",
publisher = "Royal Society of Chemistry",
number = "35",

}

Nam, WH, Kim, BB, Lim, YS, Dae, KS, Seo, WS, Park, H-H & Lee, JY 2017, 'Phonon-glass electron-crystals in ZnO-multiwalled carbon nanotube nanocomposites', Nanoscale, vol. 9, no. 35, pp. 12941-12948. https://doi.org/10.1039/c7nr03747c

Phonon-glass electron-crystals in ZnO-multiwalled carbon nanotube nanocomposites. / Nam, Woo Hyun; Kim, Bo Bae; Lim, Young Soo; Dae, Kyun Seong; Seo, Won Seon; Park, Hyung-Ho; Lee, Jeong Yong.

In: Nanoscale, Vol. 9, No. 35, 21.09.2017, p. 12941-12948.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Phonon-glass electron-crystals in ZnO-multiwalled carbon nanotube nanocomposites

AU - Nam, Woo Hyun

AU - Kim, Bo Bae

AU - Lim, Young Soo

AU - Dae, Kyun Seong

AU - Seo, Won Seon

AU - Park, Hyung-Ho

AU - Lee, Jeong Yong

PY - 2017/9/21

Y1 - 2017/9/21

N2 - We propose a strategy for enhancing thermoelectric performance through the realization of a 'phonon-glass electron-crystal' (PGEC) by interface control using multiwalled carbon nanotubes (MWCNTs). By the consolidation of undoped ZnO nanoparticles with MWCNTs (0.5, 1, and 2 wt%) using spark plasma sintering, we fabricated the interface-controlled ZnO-MWCNT nanocomposites, in which ZnO grains were surrounded with a MWCNT network. Both single crystal-like charge transport (electron-crystal) and considerably reduced thermal conductivity (phonon-glass) were achieved simultaneously thanks to the beneficial effects of the MWCNT network, and this led to the enhancement of the thermoelectric figure of merit. We discussed these findings on PGECs in the ZnO-MWCNT nanocomposites from the viewpoint of interface control in detail, and our strategy may provide a promising way to the realization of PGEC in other hybrid thermoelectric materials.

AB - We propose a strategy for enhancing thermoelectric performance through the realization of a 'phonon-glass electron-crystal' (PGEC) by interface control using multiwalled carbon nanotubes (MWCNTs). By the consolidation of undoped ZnO nanoparticles with MWCNTs (0.5, 1, and 2 wt%) using spark plasma sintering, we fabricated the interface-controlled ZnO-MWCNT nanocomposites, in which ZnO grains were surrounded with a MWCNT network. Both single crystal-like charge transport (electron-crystal) and considerably reduced thermal conductivity (phonon-glass) were achieved simultaneously thanks to the beneficial effects of the MWCNT network, and this led to the enhancement of the thermoelectric figure of merit. We discussed these findings on PGECs in the ZnO-MWCNT nanocomposites from the viewpoint of interface control in detail, and our strategy may provide a promising way to the realization of PGEC in other hybrid thermoelectric materials.

UR - http://www.scopus.com/inward/record.url?scp=85029477385&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85029477385&partnerID=8YFLogxK

U2 - 10.1039/c7nr03747c

DO - 10.1039/c7nr03747c

M3 - Article

AN - SCOPUS:85029477385

VL - 9

SP - 12941

EP - 12948

JO - Nanoscale

JF - Nanoscale

SN - 2040-3364

IS - 35

ER -