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Study of Nanostructure Inclusion Effects on the Thermoelectric Behavior of Ca3Co4O9 Thin Films Grown by Pulsed Laser Deposition

Published

Author(s)

Winnie K. Wong-Ng, Evans L. Thomas, Xueyan Song, Yonggao Y. Yan, Joshua B. Martin, Margaret Ratcliff, Paul N. Barnes

Abstract

The influence of incorporating nanoparticulate additions into Ca3Co4O9 (CCO) thin films prepared by pulsed laser deposition using composite targets of CCO + BaZrO3 (BZO) on Si, LaAlO3 and Al2O3 substrates is investigated. X-ray data and high-resolution scanning electron microscopy reveal preferred c-axis orientation of the films deposited on Si substrates with the formation of nanoparticles between ~ 10 – 50 nm. Preliminary thermoelectric behavior show an enhancement of the power factor α2/ρ at room temperature. The microstructure and thermoelectric behavior of the CCO films are compared to the BZO-doped films.
Proceedings Title
Thermoelectric Materials - Growth, Properties, Novel Characterization Methods, and Applications
Volume
1267
Conference Dates
April 5-9, 2010
Conference Location
San Francisco, MD
Conference Title
Materials Research Society Spring meeting

Keywords

Ca3Co4O9 films, thermoelectric behavior, pulsed laser deposition

Citation

Wong-Ng, W. , Thomas, E. , Song, X. , Yan, Y. , Martin, J. , Ratcliff, M. and Barnes, P. (2011), Study of Nanostructure Inclusion Effects on the Thermoelectric Behavior of Ca3Co4O9 Thin Films Grown by Pulsed Laser Deposition, Thermoelectric Materials - Growth, Properties, Novel Characterization Methods, and Applications , San Francisco, MD, [online], https://doi.org/10.1557/PROC-1267-DD10-14 (Accessed March 4, 2024)
Created February 1, 2011, Updated April 25, 2020