2014 Fiscal Year Final Research Report
Fabrication of Si nanoparticles from Si swarf by use of photochemical dissolution and application to solar cells
| Project/Area Number |
25600041
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nanomaterials engineering
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2015-03-31
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| Keywords | シリコンナノパーティクル / 太陽電池 / 硝酸酸化 |
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| Outline of Final Research Achievements |
Si nanoparticles have been fabricated from Si swarf by use of milling methods. Produced Si nanoparticles possess the maximum volume distribution of ~5 nm. Si nanoparticles with the HF treatment are stable in air, i.e., only 0.8 nm SiO2 formation by leaving in air for a week. Solar cells with the p-type Si nanoparticles/n-Si substrates are fabricated. The solar cells show good rectifying behavior and photoresponse. The nitric acid treatment followed by the heat treatment greatly decreases contact resistance and the conversion efficiency was markedly improved.
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| Free Research Field |
半導体材料・プロセス
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