Enhanced thermoelectric performance of Al-doped ZnO thin films on amorphous substrate

Shrikant Saini, Paolo Mele, Hiroaki Honda, Dave J. Henry, Patrick E. Hopkins, Leopoldo Molina-Luna, Kaname Matsumoto, Koji Miyazaki, Ataru Ichinose

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

2% Al-doped ZnO (AZO) thin films fabricated at 300 °C by pulsed laser deposition (PLD) on amorphous fused silica demonstrated the high quality crystallinity and grain connection, which correlates to the high thermoelectric performance: electrical conductivity σ = 923S/cm and Seebeck coefficient S =-111 μV/K at 600 K. Its power factor (S2 · σ) is 1.2 × 10-3Wm-1K-2, twofold better than films deposited on crystalline SrTiO3 under the same experimental conditions. Using our measured thermal conductivity (κ) at 300K (4.89Wm-1K-1), the figure of merit, ZT = (S2 · σ · T/κ), is calculated as 0.045 at 600 K, 5 times larger than ZT of our previously reported bulk ZnO.

Original languageEnglish
Article number060306
JournalJapanese Journal of Applied Physics
Volume53
Issue number6
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes

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Seebeck coefficient
Fused silica
Seebeck effect
Pulsed laser deposition
figure of merit
pulsed laser deposition
crystallinity
Thermal conductivity
thermal conductivity
silicon dioxide
Crystalline materials
Thin films
electrical resistivity
Substrates
coefficients
thin films
Electric Conductivity

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Saini, S., Mele, P., Honda, H., Henry, D. J., Hopkins, P. E., Molina-Luna, L., ... Ichinose, A. (2014). Enhanced thermoelectric performance of Al-doped ZnO thin films on amorphous substrate. Japanese Journal of Applied Physics, 53(6), [060306]. https://doi.org/10.7567/JJAP.53.060306

Enhanced thermoelectric performance of Al-doped ZnO thin films on amorphous substrate. / Saini, Shrikant; Mele, Paolo; Honda, Hiroaki; Henry, Dave J.; Hopkins, Patrick E.; Molina-Luna, Leopoldo; Matsumoto, Kaname; Miyazaki, Koji; Ichinose, Ataru.

In: Japanese Journal of Applied Physics, Vol. 53, No. 6, 060306, 01.01.2014.

Research output: Contribution to journalArticle

Saini, S, Mele, P, Honda, H, Henry, DJ, Hopkins, PE, Molina-Luna, L, Matsumoto, K, Miyazaki, K & Ichinose, A 2014, 'Enhanced thermoelectric performance of Al-doped ZnO thin films on amorphous substrate', Japanese Journal of Applied Physics, vol. 53, no. 6, 060306. https://doi.org/10.7567/JJAP.53.060306
Saini, Shrikant ; Mele, Paolo ; Honda, Hiroaki ; Henry, Dave J. ; Hopkins, Patrick E. ; Molina-Luna, Leopoldo ; Matsumoto, Kaname ; Miyazaki, Koji ; Ichinose, Ataru. / Enhanced thermoelectric performance of Al-doped ZnO thin films on amorphous substrate. In: Japanese Journal of Applied Physics. 2014 ; Vol. 53, No. 6.
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