| Project/Area Number |
26870342
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Structural/Functional materials
Device related chemistry
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | Si solar cells / light trapping effect / polycrystalline Si / Pt catalyst / 光閉じ込め構造 / 多結晶シリコン / 転写 / 白金触媒 / シリコン微細加工 |
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| Outline of Final Research Achievements |
Structure of Pt catalyst is transferred on Si surfaces by the contact of Pt catalyst with Si immersed in hydrofluoric acid and hydrogen peroxide solutions. In this study, we used this method to fabricate textured polycrystalline Si surfaces with light trapping effect for high efficiency Si solar cells.
For fabrication of textured Si surfaces with light trapping effect, we prepared Pt catalyst having pyramidal textured or V-shaped stripe structured surfaces, which was designed based on ray-trace simulation. By use of these patterns, we performed the transfer reaction, and confirmed that the Pt patterns were transferred on Si surface as inverted pyramidal texture or inverted V-shape structure. The reaction mechanism was also proposed by comparing the structures fabricated on n-Si and p-Si with various resistivity.
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