The thermoelectric properties of Au nanoparticle-incorporated Al-doped mesoporous ZnO thin films

Min Hee Hong, Wooje Han, Kyu Yeon Lee, Hyung Ho Park

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Mesoporous Al-doped ZnO thin films incorporated with gold nanoparticles (Au NPs) were synthesized using a sol-gel and evaporation-induced self-assembly process. In this study, the complementary effects of Au NP incorporation and Al doping on the thermoelectric properties of mesoporous ZnO thin films were analysed. The incorporated Au NPs induced an increase in electrical conductivity but a detriment in the pore arrangement of the mesoporous ZnO thin film, which was accompanied by a decrease in porosity. However, the addition of the Al dopant minimized the pore structural collapse because of the inhibition of the grain growth in the ZnO skeletal structure, resulting in the enhancement of the pore arrangement and porosity. When the Au NPs and Al dopant were added at the same time, the degradation in the pore structure was minimized and the electrical conductivity was effectively increased, but the absolute value of the Seebeck coefficient was decreased. However, as a result, the thermoelectric power factor was increased by 2.4 times compared to that of the pristine mesoporous ZnO thin film. It was found that co-introducing the Au NPs and Al doping to the mesoporous ZnO structure was effective in preserving the pore structure and increasing the electric conductivity, thereby enhancing the thermoelectric property of the mesoporous ZnO thin film.

Original languageEnglish
Article number181799
JournalRoyal Society Open Science
Volume6
Issue number5
DOIs
Publication statusPublished - 2019 May 1

Bibliographical note

Funding Information:
Data accessibility. Data available from the Dryad Digital Repository: https://doi.org/10.5061/dryad.g2j4t50 [28]. Authors’ contributions. M.-H.H. designed the experiments, and performed the sample fabrication, characterization and measurements with the analysis. W.H. and K.-Y.L. performed the sample characterization and measurements. H.-H.P. conceived the idea of the research and supervised the experiments, analyses and manuscript. All the authors discussed the progress of the research and reviewed the manuscript. Competing interests. We declare have no competing interests. Funding. This work was supported by Nano-Convergence Foundation (www.nanotech2020.org) funded by the Ministry of Science, ICT and Future Planning (MSIP), Korea and the Ministry of Trade, Industry and Energy (MOTIE), Korea (Project Number: R201602310). The experiments at PLS were supported, in part, by MEST and POSTECH. This work was supported (researched) by the third Stage of Brain Korea 21 Plus Project in 2019.

Funding Information:
This work was supported by Nano-Convergence Foundation (www.nanotech2020.org) funded by the Ministry of Science, ICT and Future Planning (MSIP), Korea and the Ministry of Trade, Industry and Energy (MOTIE), Korea (Project Number: R201602310). The experiments at PLS were supported, in part, by MEST and POSTECH. This work was supported (researched) by the third Stage of Brain Korea 21 Plus Project in 2019.

Publisher Copyright:
© 2019 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

All Science Journal Classification (ASJC) codes

  • General

Fingerprint Dive into the research topics of 'The thermoelectric properties of Au nanoparticle-incorporated Al-doped mesoporous ZnO thin films'. Together they form a unique fingerprint.

Cite this