Ternary wurtzite-type narrow band gap oxide semiconductor; Fabrication of thin-films and application to thin-film solar cells
| Project/Area Number |
26289239
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Inorganic materials/Physical properties
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| Research Institution | Tohoku University (2016)
Osaka University (2014-2015) |
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Principal Investigator |
Omata Takahisa 東北大学, 多元物質科学研究所, 教授 (80267640)
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| Co-Investigator(Kenkyū-buntansha) |
喜多 正雄 富山高等専門学校, その他部局等, 准教授 (00413758)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2016: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2015: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
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| Keywords | 結晶成長 / 太陽電池 / セラミックス / 先端機能デバイス / 光物性 |
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| Outline of Final Research Achievements |
We studied fabrication method of β-CuGaO2 thin-films. First, we fabricated β-NaGaO2 thin-films as precursor materials; then, the film was subjected to ion-exchange of Na+ ions in the precursor films with Cu+. We successfully fabricated β-NaGaO2 thin-films by magnetron sputtering using β-NaGaO2 as a target material. β-CuGaO2 thin-films that exhibits good surface morphology were fabricated by ion-exchange of Na+ ions in the precursor β-NaGaO2 thin-film with Cu+ ions in CuCl vapor. Although the preferential orientation of the β-NaGaO2 films could not be controlled by magnetron sputtering, it was successfully controlled using electron-beam evaporation and sapphire substrates with various crystal orientations. However, the composition of precursor β-NaGaO2 film fabricated by sputtering and evaporation methods exhibited Na-poor composition. We found CVD is the preferable method to fabricate high quality and stoichiometric β-NaGaO2 precursor films.
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Report
(4 results)
Research Products
(45 results)
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[Presentation] Novel Ternary Wurtzite Semiconductor β-CuGaO22015
Author(s)
Issei Suzuki, Hiraku Nagatani, Masao Kita, Hiroshi Yanagi, Naoki Ohashi and Takahisa Omata
Organizer
17th International Conference on II-VI Compounds and Related Materials
Place of Presentation
パリ（フランス）
Year and Date
2015-09-13
Related Report
Int'l Joint Research
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[Presentation] Fabrication of β-CuGaO2 Thin Films2015
Author(s)
Issei Suzuki, Hiraku Nagatani, Masao Kita and Takahisa Omata
Organizer
17th International Conference on II-VI Compounds and Related Materials
Place of Presentation
パリ（フランス）
Year and Date
2015-09-13
Related Report
Int'l Joint Research
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