Thermoelectric performances in transparent ZnO films including nanowires as phonon scatterers

Takafumi Ishibe, Atsuki Tomeda, Kentaro Watanabe, Yoshiaki Nakamura

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

We report the fabrication technique and electrical propertis of embedded-ZnO nanowires (NWs) structure for high-performance transparent thermoelectric materials. In fabrication technique, we revealed that the length of NW is less than 2 μm for embedding NWs. Our embedded-ZnO NWs structures showed a little smaller electrical conductivities than ZnO films (without ZnO NWs) at the carrier concentration of ∼ 1018 cm-3. However, at high carrier concentration, our embedded-ZnO NWs structures are expected to show high thermoelectric performances due to the drastic reduction of κ and smaller σ degradation, because there is the difference of MFP between electron and phonon. Our work showed the design guide to enhance the performance of transparent thermoelectric materials.

Original languageEnglish
Article number012126
JournalJournal of Physics: Conference Series
Volume1052
Issue number1
DOIs
Publication statusPublished - 2018 Jul 26
Externally publishedYes
Event17th International Conference on Micro and Nanotechnology for Power Generation and Energy Conversion Applications, PowerMEMS 2017 - Kanazawa, Japan
Duration: 2017 Nov 142017 Nov 17

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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