2012 Fiscal Year Final Research Report
Application of proton conduction of nickel oxide nanostructures to electrochromic devices
| Project/Area Number |
22656142
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KITA Koji 東京大学, 大学院・工学系研究科, 准教授 (00343145)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 先端機能デバイス / 表面界面物性 / 欠陥準位 / エレクトロクロミック |
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| Research Abstract |
Applications of ionic conduction in defect-induced-oxide thin films for electrical devices were investigated. First, a proton-conducting electrolyte for an all-dry-processed electrochromic cell was demonstrated by using the hydrogenated-Ta2O5 films prepared by hydrogen-introduced sputtering, even though nano-structured NiO thin films did not show any expected ionic conductions. Next, voltage-induced nonvolatile change of magnetic anisotropy was demonstrated for TiO2-δ/ferromagnetic CoFeB stacks, by means of the oxygen vacancy transport in TiO2-δ layer. This result indicates a possible development of a new type of magnetic device driven by ionic conduction in oxides.
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