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

  • Evan Lyle Thomas (a1), Xueyan Song (a2), Yonggao Yan (a3), Joshua Martin (a4), Winnie Wong-Ng (a5), Margaret Ratcliff (a6) and Paul N. Barnes (a7)...

Abstract

The influence of incorporating nanoparticulate additions into Ca3Co4O9 (CCO) thin films prepared by pulsed laser deposition using composite targets of CCO and CCO + 3wt% BaZrO3 (BZO) on Si and LaAlO3 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 shows 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.

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Keywords

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

  • Evan Lyle Thomas (a1), Xueyan Song (a2), Yonggao Yan (a3), Joshua Martin (a4), Winnie Wong-Ng (a5), Margaret Ratcliff (a6) and Paul N. Barnes (a7)...

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