Presentation 2013-08-02
Crystalline structure of ZnO thin films grown on a-plane sapphire substrates using high-energy H_2O produced by a Pt-catalyzed H_2-O_2 reaction
Naoya YAMAGUCHI, Tomohiko Takeuchi, Tomoki Nakamura, Yuuki OHASHI, Eichi NAGATOMI, Yasuhiro TAMAYAMA, Kanji YASUI,
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Abstract(in English) Crystalline structure of ZnO thin films, which were grown on a-plane sapphire substrates through a reaction between dimethylzinc and high-temperature H_2O produced by a Pt-catalyzed H_2-O_2 reaction, was measured. From the thickness dependence of the electrical properties, the electron mobility at room temperature increased from 54 to 189 cm^2V^<-1>s^<-1> with increasing film thickness from 200 nm to 2800 nm. The temperature dependences of the Hall mobility and carrier concentration of ZnO films with thinner than 500 nm and thicker than 500 nm were quite different. The existence of the layer with high-defect density near the film-substrate interface was estimated. In this study, the crystalline structure of the ZnO film with 5μm thickness grown on the a-plane sapphire substrates was observed using cross-sectional transmission electron microscopy (TEM). The dislocation density in the films was also evaluated under two-beam condition.
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Keyword(in English) ZnO / catalytic reaction / high-temperature H_2O / crystalline structure / dislocation
Paper # CPM2013-49
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Committee CPM
Conference Date 2013/7/25(1days)
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Registration To Component Parts and Materials (CPM)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Crystalline structure of ZnO thin films grown on a-plane sapphire substrates using high-energy H_2O produced by a Pt-catalyzed H_2-O_2 reaction
Sub Title (in English)
Keyword(1) ZnO
Keyword(2) catalytic reaction
Keyword(3) high-temperature H_2O
Keyword(4) crystalline structure
Keyword(5) dislocation
1st Author's Name Naoya YAMAGUCHI
1st Author's Affiliation Faculty of Engineering, Nagaoka University of Technology()
2nd Author's Name Tomohiko Takeuchi
2nd Author's Affiliation Faculty of Engineering, Nagaoka University of Technology
3rd Author's Name Tomoki Nakamura
3rd Author's Affiliation Faculty of Engineering, Nagaoka University of Technology
4th Author's Name Yuuki OHASHI
4th Author's Affiliation Faculty of Engineering, Nagaoka University of Technology
5th Author's Name Eichi NAGATOMI
5th Author's Affiliation Faculty of Engineering, Nagaoka University of Technology
6th Author's Name Yasuhiro TAMAYAMA
6th Author's Affiliation Faculty of Engineering, Nagaoka University of Technology
7th Author's Name Kanji YASUI
7th Author's Affiliation Faculty of Engineering, Nagaoka University of Technology
Date 2013-08-02
Paper # CPM2013-49
Volume (vol) vol.113
Number (no) 171
Page pp.pp.-
#Pages 6
Date of Issue