Investigation of crystal growth mechanisms of Si crystals floating on Si melt and development of crystal growth technique to realize high-quality Si multicrystals
| Project/Area Number |
20226001
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| Research Category |
Grant-in-Aid for Scientific Research (S)
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| Allocation Type | Single-year Grants |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | Tohoku University |
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Principal Investigator |
NAKAJIMA Kazuo Tohoku University, エネルギー科学研究科, 客員教授 (80311554)
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| Co-Investigator(Kenkyū-buntansha) |
USAMI Noritaka 東北大学, 金属材料研究所, 准教授 (20262107)
FUJIWARA Kozo 東北大学, 金属材料研究所, 准教授 (70332517)
KUTSUKAKE Kentaro 東北大学, 金属材料研究所, 助教 (00463795)
MORISHITA Kohei 京都大学, エネルギー科学研究科, 特定助教 (00511875)
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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 |
¥149,110,000 (Direct Cost: ¥114,700,000、Indirect Cost: ¥34,410,000)
Fiscal Year 2010: ¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
Fiscal Year 2009: ¥77,350,000 (Direct Cost: ¥59,500,000、Indirect Cost: ¥17,850,000)
Fiscal Year 2008: ¥58,370,000 (Direct Cost: ¥44,900,000、Indirect Cost: ¥13,470,000)
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| Keywords | 結晶成長 / シリコン / 太陽電池 / 多結晶 / 結晶欠陥 / 浮遊キャスト成長 / 浮遊キャスト法 / Siバルク多結晶 / 亜粒界 / ランダム粒界 / せん断応力 / デンドライト結晶 / ファセット成長 |
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| Research Abstract |
We clarified fundamental crystal growth mechanisms of Si from melt such as formation mechanisms of microstructures and crystal defects by using an originally developed crystal growth furnace with in-situ observation system and model crystal growth experiments with purposely designed multi-seed crystals. The newly obtained fundamental knowledge on crystal growth mechanisms has been successfully implemented for development of floating cast method as a novel crystal growth technique to realize high-quality Si multicrystals with controlled microstructures and crystal defects, which will be utilized for high-efficiency solar cells.
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Report
(4 results)
Research Products
(111 results)
