Journal of the Ceramic Society of Japan
Online ISSN : 1348-6535
Print ISSN : 1882-0743
ISSN-L : 1348-6535
Technical report
Room-temperature fabrication of epitaxial ZnO thin films on polymer substrates coated with a seed layer of exfoliated β-Ga2O3 single-crystal thin sheets by pulsed laser deposition
Tomoaki OgaSatoru KanekoYutaka MajimaHisashi MiyazakiAkifumi MatsudaMamoru Yoshimoto
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ジャーナル オープンアクセス

2023 年 131 巻 5 号 p. 130-134

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Room-temperature (RT) epitaxial growth of ZnO thin films on flexible cyclo-olefin polymer (COP) substrates coated with the exfoliated β-Ga2O3(100) single crystal thin sheets as a seed layer was investigated using the pulsed laser deposition technique. Scanning electron microscopy (SEM) observations and X-ray diffraction (XRD) measurements demonstrated that c-axis-oriented epitaxial ZnO(0001) thin films were obtained at RT on the exfoliated β-Ga2O3(100) seed layer bonded to the COP substrate. Also, the epitaxial relationship between the ZnO thin films and β-Ga2O3(100) seed layer was ZnO(0001)/β-Ga2O3(100) with ZnO[1120] ∥ β-Ga2O3[010] and ZnO[1100] ∥ β-Ga2O3[001]. The optical transmittance of the thin film, including the seed layer was more than 80 % in the visible light region. The optical band gap and the electrical resistivity of the ZnO thin film were estimated to be about 3.4 eV and about 2.1 × 10−3 Ω cm at RT, respectively.

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© 2023 The Ceramic Society of Japan

この記事はクリエイティブ・コモンズ [表示 4.0 国際]ライセンスの下に提供されています。
https://creativecommons.org/licenses/by/4.0/deed.ja
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