Multi directional epitaxial electrodeposition of ZnO thin films on bulk GaN single crystals
| Project/Area Number |
20550175
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Inorganic industrial materials
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| Research Institution | Gifu University |
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Principal Investigator |
YOSHIDA Tsukasa Gifu University, 工学研究科, 准教授 (90273127)
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| Project Period (FY) |
2008 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | バルクGaN単結晶 / ZnO / 電析 / エピタキシャル成長 |
|---|
| Research Abstract |
Heavily Si-doped conductive GaN bulk single crystals were used as a rotating disk electrode (RDE) to electrodeposit ZnO thin films employing the reduction of oxygen. Charge transfer rate constants for oxygen reduction reaction (ORR) were determined from the I-V curves in KCl aqueous solution at 70℃ by Koutecky-Levich (K-L) analysis. The order of GaN(10-11)〓GaN(1-100)〓GaN(11-20)>GaN(10-12)>GaN(10-13)>>GaN(0001) was found. Heteroepitaxial growth of ZnO was achieved for all crystal faces. The level of exptaxy (mosaic spread) was checked from the full-width at half maxima (FWHM) of the XRD ω-scan for the (11-22) diffraction and was in the order of GaN(1-100)>>GaN(10-11)〓GaN(10-13)>GaN(11-20)>GaN(10-12)>GaN(0001). The higher activity for the ORR approximately resulted in the higher single crystallinity of the deposited ZnO. The effect of the deposition potential was also checked. The higher overpotential resulted in the higher density of ZnO nuclei but they were randomly oriented. It is therefore understood that ZnO with good quality can be obtained when the electrode activity is high, but not when a large overpotential is applied to increase the rate of deposition.
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Report
(4 results)
Research Products
(86 results)
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[Journal Article] Electeodeposition of Inorganic/Organic Hybrid Thin Films2009
Author(s)
Tsukasa Yoshida, Jingbo Zhang, Daisuke Komatsu, Seiichi Sawatani, Hideki Minoura, Thierry Pauporte, Daniel Lincot, Torsten Oekermann, Derek Schlettwain, Hirokazu Tada, Dieter Wohrle, Kazumasa Funabiki, Masaki Matsui, Hidetoshi Miura, Hisao Yanagi
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Journal Title
Advance Functional Materials Vol.19, No.1
Pages: 17-43
Related Report
Peer Reviewed
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[Journal Article] Electeodeposition of Inorganic/Organic Hybrid Thin Films2008
Author(s)
Tsuksa Yoshida, Jingbo Zhang, Daisuke Komatsu, Seiichi Sawalani, Hideki Minoura, Thierry Pauporte, Daniel Lineot, Torsten Oekermann, Derek Schlettwain, Hirokazu Tada, Dieter Wohrle, Kazumasa Funabiki, Masaki Malsui, Hidetoshi Miura, Hisao Yanagi
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Journal Title
Advance Functional Materials 19
Pages: 17-43
Related Report
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