Ti doping effects on the Seebeck coefficient and electrical conductivity of mesoporous ZnO thin film

Min Hee Hong, Haryeong Choi, Younghun Kim, Taehee Kim, Hyung Hee Cho, Zied Driss, Dorra Driss, Abdallah Bouabidi, Souhir Euchy, Hyung Ho Park

Research output: Contribution to journalArticle

Abstract

The low thermal conductivity of mesoporous structures, due to the pores acting as phonon scattering centers, allows their use in thermoelectric devices. However, high Seebeck coefficient and electrical conductivity and low thermal conductivity are required to enhance their thermoelectric properties. In this study, Ti-doped mesoporous ZnO thin films with various Ti concentrations were fabricated and analyzed. When increasing the Ti dopant concentration up to 1.5 at%, the crystallinity and pore structure of the doped films remained almost unchanged, their porosity and thickness slightly increased, the electrical conductivity was also enhanced due to the increased carrier concentration, and the Seebeck coefficient decreased. These Ti doping-induced increase in electrical conductivity and decrease in Seebeck coefficient led to an increase of almost 1.5 times in the power factor of the mesoporous ZnO thin films.

Original languageEnglish
Article number121757
JournalMaterials Chemistry and Physics
Volume235
DOIs
Publication statusPublished - 2019 Sep 1

Fingerprint

Seebeck coefficient
Seebeck effect
Doping (additives)
porosity
Thin films
conductivity
electrical resistivity
Thermal conductivity
thermal conductivity
thin films
Phonon scattering
Pore structure
Carrier concentration
crystallinity
Porosity
scattering
Electric Conductivity

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Hong, Min Hee ; Choi, Haryeong ; Kim, Younghun ; Kim, Taehee ; Cho, Hyung Hee ; Driss, Zied ; Driss, Dorra ; Bouabidi, Abdallah ; Euchy, Souhir ; Park, Hyung Ho. / Ti doping effects on the Seebeck coefficient and electrical conductivity of mesoporous ZnO thin film. In: Materials Chemistry and Physics. 2019 ; Vol. 235.
@article{5f737f75b3c049f18fcab87915b82219,
title = "Ti doping effects on the Seebeck coefficient and electrical conductivity of mesoporous ZnO thin film",
abstract = "The low thermal conductivity of mesoporous structures, due to the pores acting as phonon scattering centers, allows their use in thermoelectric devices. However, high Seebeck coefficient and electrical conductivity and low thermal conductivity are required to enhance their thermoelectric properties. In this study, Ti-doped mesoporous ZnO thin films with various Ti concentrations were fabricated and analyzed. When increasing the Ti dopant concentration up to 1.5 at{\%}, the crystallinity and pore structure of the doped films remained almost unchanged, their porosity and thickness slightly increased, the electrical conductivity was also enhanced due to the increased carrier concentration, and the Seebeck coefficient decreased. These Ti doping-induced increase in electrical conductivity and decrease in Seebeck coefficient led to an increase of almost 1.5 times in the power factor of the mesoporous ZnO thin films.",
author = "Hong, {Min Hee} and Haryeong Choi and Younghun Kim and Taehee Kim and Cho, {Hyung Hee} and Zied Driss and Dorra Driss and Abdallah Bouabidi and Souhir Euchy and Park, {Hyung Ho}",
year = "2019",
month = "9",
day = "1",
doi = "10.1016/j.matchemphys.2019.121757",
language = "English",
volume = "235",
journal = "Materials Chemistry and Physics",
issn = "0254-0584",
publisher = "Elsevier BV",

}

Ti doping effects on the Seebeck coefficient and electrical conductivity of mesoporous ZnO thin film. / Hong, Min Hee; Choi, Haryeong; Kim, Younghun; Kim, Taehee; Cho, Hyung Hee; Driss, Zied; Driss, Dorra; Bouabidi, Abdallah; Euchy, Souhir; Park, Hyung Ho.

In: Materials Chemistry and Physics, Vol. 235, 121757, 01.09.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ti doping effects on the Seebeck coefficient and electrical conductivity of mesoporous ZnO thin film

AU - Hong, Min Hee

AU - Choi, Haryeong

AU - Kim, Younghun

AU - Kim, Taehee

AU - Cho, Hyung Hee

AU - Driss, Zied

AU - Driss, Dorra

AU - Bouabidi, Abdallah

AU - Euchy, Souhir

AU - Park, Hyung Ho

PY - 2019/9/1

Y1 - 2019/9/1

N2 - The low thermal conductivity of mesoporous structures, due to the pores acting as phonon scattering centers, allows their use in thermoelectric devices. However, high Seebeck coefficient and electrical conductivity and low thermal conductivity are required to enhance their thermoelectric properties. In this study, Ti-doped mesoporous ZnO thin films with various Ti concentrations were fabricated and analyzed. When increasing the Ti dopant concentration up to 1.5 at%, the crystallinity and pore structure of the doped films remained almost unchanged, their porosity and thickness slightly increased, the electrical conductivity was also enhanced due to the increased carrier concentration, and the Seebeck coefficient decreased. These Ti doping-induced increase in electrical conductivity and decrease in Seebeck coefficient led to an increase of almost 1.5 times in the power factor of the mesoporous ZnO thin films.

AB - The low thermal conductivity of mesoporous structures, due to the pores acting as phonon scattering centers, allows their use in thermoelectric devices. However, high Seebeck coefficient and electrical conductivity and low thermal conductivity are required to enhance their thermoelectric properties. In this study, Ti-doped mesoporous ZnO thin films with various Ti concentrations were fabricated and analyzed. When increasing the Ti dopant concentration up to 1.5 at%, the crystallinity and pore structure of the doped films remained almost unchanged, their porosity and thickness slightly increased, the electrical conductivity was also enhanced due to the increased carrier concentration, and the Seebeck coefficient decreased. These Ti doping-induced increase in electrical conductivity and decrease in Seebeck coefficient led to an increase of almost 1.5 times in the power factor of the mesoporous ZnO thin films.

UR - http://www.scopus.com/inward/record.url?scp=85067546401&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85067546401&partnerID=8YFLogxK

U2 - 10.1016/j.matchemphys.2019.121757

DO - 10.1016/j.matchemphys.2019.121757

M3 - Article

VL - 235

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

SN - 0254-0584

M1 - 121757

ER -